|| List of recent Downlink-related patents
| Robust harq-ack design for mf-hsdpa|
When a ue (12) is configured with mf-hsdpa and harq-ack information associated with cells (14, 16) (characterized by potentially different downlink timing) is jointly encoded, only part of the existing rel-9 harq-ack codebook is reused. In one embodiment, only the codebook conflict arising from reuse of encodings is resolved.
| Method and apparatus for efficient feedback in a wireless communication system supporting multiple antennas|
A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting csi of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (ri) and a first wideband (wb) precoding matrix indicator (pmi) at a first subframe, and transmitting a wideband channel quality indicator (wb cqi) and a second wb pmi at a second subframe.
| Methods of selecting mimo ranks and related devices|
A method of operating a wireless network node may include transmitting a first mimo downlink communication to a wireless terminal according to a first mimo rank, and receiving at least one harq ack/nack, message from the wireless terminal corresponding to the first mimo downlink communication. A report may be received from the wireless terminal identifying a reported mimo rank, and a second mimo rank may be selected for a second mimo downlink communication responsive to the at least one harq ack/nack message.
| Reducing call drops in uplink power limited scenarios|
A method for reducing call drops in uplink power limited scenarios is disclosed. The method can include a wireless communication device determining that the wireless communication device is experiencing an uplink power limited condition in which a transmission power of the wireless communication device is limited to a level below a power class level of the wireless communication device.
| Base station apparatus, mobile terminal apparatus, communication system and communication method|
The present invention is designed to provide a base station apparatus, a mobile terminal apparatus, a communication system and a communication method that cope with the shortage of downlink control channel capacity. For a mobile terminal apparatus that receives downlink signals using a resource region for downlink control signals and a resource region for downlink data signals, a base station apparatus is configured to set a plurality of virtual to resources for downlink control signals in a plurality of physical resources that are arranged in a frequency direction in the resource region for downlink data signals, and allocate the downlink control signals, in a distributed manner, between virtual resources of a relatively low frequency band side and virtual resources of a relatively high frequency band side in a plurality of virtual resources..
| Method for transmitting/receiving downlink control information in wireless communication system and device therefor|
Disclosed in the present invention is a method for a terminal to receive downlink control information from a base station in a wireless communication system. More particularly, the present invention comprises the steps of receiving control information in a first area of a specific subframe on the basis of a first reference signal, receiving control information in a second area of the specific subframe on the basis of a second reference signal, wherein the first reference signal and the second reference signal are applied to a same precoding..
| Base station|
When a scheduling executing section allocates a use downlink radio resource including in a frequency direction a frequency band, in which a known signal is not received by an uplink radio resource for known signal, from a downlink radio resource associated with the uplink radio resource for known signal to a communication terminal, a communication section generates a known signal to be received from the communication terminal in a frequency band of the use downlink radio resource in a pseudo manner when performing downlink communication with the communication terminal using the use downlink radio resource. The communication section controls transmission directivity in a plurality of antennas based on a new reception signal obtained by adding the pseudo known signal as a desired wave component to a reception signal that is received in the frequency band of the use downlink radio resource in the uplink radio resource for known signal..
| Method and apparatus for handling random access channel responses|
A method and apparatus for supporting a random access using a random access channel (rach) are disclosed. The wtru detects a format of control information in at least one control channel element (cce) of a common area in a control portion of a downlink transmission.
| Method for transmitting sub-frame designation information to a downlink in a radio communication system|
A method of transmitting subframe designating information in downlink in a wireless communication system is disclosed. The present invention includes generating the subframe designating information for designating a subframe of a specific type in a radio frame and transmitting the generated subframe designating information to a user equipment, wherein the subframe designating information includes initial location information indicating an initial location of the subframe of the specific type on the radio frame and period information indicating a period for the subframe of the specific type to be repeated..
| Radio transmission device and radio transmission method|
A base station is provided, including a transmitter configured to broadcast information for determining one or more first preambles contained in a first random access preamble group and any second preamble(s) contained in a second random access preamble group; and a receiver configured to receive a preamble transmitted by a mobile station. The received preamble is randomly selected from among the first preamble(s) when the first random access preamble group is selected, or is randomly selected from among the second preamble(s) when the second random access preamble group is selected.
| Method and apparatus for communicating downlink control information in an asymmetric multicarrier communication network environment|
A method for communicating downlink control information (dci) in an asymmetric multicarrier communication network environment, the method comprising: determining a carrier type corresponding to dci to be transmitted to a mobile station from a plurality of carrier types, encoding the dci in a dci format, wherein the dci format comprises a set of fields corresponding to the determined carrier type, and transmitting the dci encoded in the dci format to the mobile station through a downlink control channel on a primary carrier, wherein the dci format comprises a carrier index field indicating type of the fields in the dci format encoding the dci and the carrier type corresponding to the encoded dci.. .
| Method of handling enhanced physical downlink control channel and related communication device|
A method of handling an enhanced physical downlink control channel (epdcch) for a network of a wireless communication system comprises calculating the average number of available resource elements (res) in one control channel element (cce) for epdcch in a physical resource block (prb); selecting an aggregation level from a first aggregation level set; calculating the number of available res in a epdcch for the selected aggregation level according to the selected aggregation level and the average number of available res in one cce; selecting a first candidate number set according to a second comparison result between the number of available res in the epdcch for the selected aggregation level and a second threshold; and determining an aggregation level and the number of blind decoding candidates corresponding to the determined aggregation level, for transmitting control information dedicated to a user equipment.. .
| Adapting a number of aggregation levels for control channel elements|
Methods and apparatus are described for a base station to transmit and for a user equipment (ue) to detect a physical downlink control channel (pdcch) conveying a downlink control information (dci) format scheduling data reception or data transmission by the ue. The base station transmits a pdcch and the ue decodes candidate pdcchs using a number of control channel elements (cces) from a first set of cces for a first dci format and using a number of cces from a second set of cces for a second dci format depending on a maximum code rate for the dci format transmission or on a scheduling bandwidth..
| Method for receiving downlink signal and method for transmitting same, user equipment, and base station|
Presented is a plan for utilizing resources not being used in a subframe consisting of relay transmission, and being thrown away thereafter. The present invention enables efficient utilization of the resources by reducing the waste of the resources in a wireless communication system supporting a relay..
| Methods and nodes for maintaining a wireless connection in a wireless communications network|
A method and user node for maintaining a connection with a network node when operating in a multi-carrier mode using a first filter configuration to receive multiple frequency carriers simultaneously for downlink communication. The user node mo) applies a mode switching scheme comprising first intervals for the multi-carrier mode and second intervals for a single carrier mode using a second filter configuration to receive a single carrier for the downlink communication.
| Apparatuses and methods for csi-rs configuration in distributed rrh systems|
Apparatuses and methods for channel state information reference signal (csi-rs) configuration in distributed remote radio head (rrh) systems are described. A transmission point selection module can receive a user equipment (ue) signal via a transmission point from a plurality of transmission points sharing a single cell identification.
| Layer 2 address management in 3 address only capable access points in networks with relays|
During uplink traffic, a map is formed between the mac address and an upper layer identifier of each station of a communications network. When a downlink unicast packet is received, the identifier is compared to the map to select a corresponding mac address.
| Wireless communication system, user terminal and base station, and communication method|
A wireless communication system includes a user terminal capable of discontinuous reception (drx) and a base station communicating with the user terminal. The user terminal includes a receiving section for receiving information about drx from the base station; a drx cycle setting section for setting drx cycles; a first period setting section for setting a first period among the drx cycles to receive a downlink signal; and a receivable period setting section for setting a receivable period to receive the downlink signal within a second period outside of the first period.
| Method for controlling power in a wireless communication system adopting a carrier aggregation technique, and apparatus for same|
The present application discloses a method in which a terminal transceives a signal to/from a base station in a wireless communication system adopting a carrier aggregation technique. More particularly, the method comprises: a step of receiving a wake-up message for a sub-component carrier which is in an idle state from said base station via a main component carrier; a step of starting to monitor said sub-component carrier after receiving said wake-up message; and a step of receiving a downlink signal from said base station or transmitting an uplink signal to said base station via said sub-component carrier..
| Synchronizing uplink and downlink transmissions in a wireless device|
Synchronizing uplink and downlink transmissions by a wireless user equipment (ue) device. A connection with a network may be established via a wireless link with a cell.
| Reception of downlink data for coordinated multi-point transmission in the event of fall-back|
Systems and methods for fall-back rate-matching and timing for user equipment (ue) configured for downlink (dl) coordinated multi-point transmission (comp) are disclosed. In one embodiment, when a ue configured in dl comp receives a fall-back transmission, pdsch is rate-matched around the serving cell crs.
| Method and apparatus for mitigating downlink interference|
A wireless device transmits downlink interference-related information to a transmission point. The wireless device generates this information by listening to reference signals associated with a first reference signal resource as well as with a second reference signal resource.
| Directional adjustment to quality of service based on predicted traffic activity on a link|
In an embodiment, an apparatus predicts traffic usage in uplink and downlink directions of a link that is configured to support a communication session for the client device. In an example, the predictions can be based upon a call state parameter (e.g., if the client device is a non-floorholder or is muted the client device is unlikely to send much traffic in the uplink direction, etc.).
| Directional adjustment to quality of service based on monitored traffic activity on a link|
In an embodiment, an apparatus monitors traffic usage in uplink and downlink directions of a link that is configured to support a communication session for the client device. The apparatus can correspond to a core network component or to an access network component.
|Positioning-assisted cell selection and handover for lte|
A cell-selection and a cell re-selection process include a wireless device that receives a signal from at least one node of a wireless network. The received signal can be a reference signal, an uplink signal, or a downlink signal, or a combination thereof.
|Method and apparatus for generatng codebooks and associated data in a network device|
A method and apparatus for generating a codebook and the associated data in a network device are provided in the invention. The method comprises the steps of generating a first row sub-matrix corresponding to a first group of antennas respectively for the respective ranks of the codebook to be generated; generating a second row sub-matrix corresponding to a second group of antennas respectively for the respective ranks based on an amount of the phase adjustment of the second group of antennas with respect to the first group of antennas; and generating a second codebook in accordance with the first row sub-matrix and the second row sub-matrix.
|Mitigating interferences for a multi-layer mimo system augmented by radio distribution network|
A wireless user equipment (ue) receiving system, may include tunable receiving antennas; a channel estimation module configured to: carry out a periodic, non-continuous channel estimation to a plurality of desired signals and undesired co-channel downlink signals which are transmitted from different base stations and received by said plurality of antennas, causing interference;, wherein the ue receiving system is configured to select between: tuning said plurality of tunable receiving antennas so as to maximize the total average power of said desired signals; and tuning said plurality of tunable receiving antennas so as to minimize the total average power of the strongest undesired co-channel base station's signals. Alternatively, the tuning is carried out so as to maximize a power ratio between said desired signals and a combination of said undesired co-channel downlink signals having the strongest interference level and an internal noise of the receiving system..
|Mapping an enhanced physical downlink control channel|
Technology for mapping an enhanced physical downlink control channel to physical resource blocks in a radio frame is disclosed. One method comprises mapping modulated symbols in the epdcch to at least one control channel element.
|Adjusting channel state information reports to improve multi-radio coexistence|
In a multi-radio user equipment (ue) various techniques may be used to buffer communications for a first radio access technology (rat). A low channel quality for a second rat is reported.
|Power compensating method, user equipment and base station|
Embodiments of the present invention provide a power compensating method, user equipment and base station. The method comprises: receiving by the base station a pathloss value reported by the user equipment, or calculating the pathloss value according to a reference signal receiving power value reported by the user equipment; and compensating for power according to the pathloss value.
|Transmission and reception bandwidth setting method, mobile terminal and base station in radio communication system that defines a plurality of signal bandwidths|
In a radio communication system defining a plurality of bandwidths, mobile terminals of kinds respectively corresponding to the plurality of bandwidths are accommodated in the system, and a minimum transmission bandwidth of the plurality of bandwidths is set as a transmission bandwidth of a downlink common channel. Or, every mobile terminal accommodated in the radio communication system is provided with a capability for processing a bandwidth equal to or greater than a predetermined value, and equal to or more than two transmission bandwidths that are equal to or less than a predetermined value are set as a transmission bandwidth of a downlink common channel.
|Method of transmitting and receiving downlink data in wireless communication system|
A method of transmitting data through a downlink common transport channel in a wireless communication system is disclosed. The method comprises receiving measurement information transmitted from a user equipment at an upper network node, forwarding control information of the common transport channel, which is acquired from the measurement information, from the upper network node to a base station, and transmitting downlink data from the base station to the user equipment through the common transport channel in accordance with the control information..
|Scheduling method, device and system based on quality of service|
Disclosed are a scheduling method, device and system based on quality of service. The method includes: for downlink service data, an access point (ap) or a gateway (gw) determines the quality of service (qos) level of a downlink service packet of a media access control (mac) layer according to the qos attribute information of the downlink service packet of the ip layer, and then the ap transmits and schedules radio resources according to the qos level; for uplink service data, user equipment (ue) determines the qos level of an uplink service packet of the mac layer according to the qos attribute information of the uplink service packet of the ip layer, and reports the qos level and the other qos parameters to the ap in the manner of a scheduling request, and the ap completes the transmitting and scheduling of radio resources according to the qos level, so that the ue transmits the uplink service data to the ar aimed at low-cost hot spot and indoor data service access, the present invention provides a novel network architecture and a perfect qos service mechanism..
|A node and method for downlink communications scheduling|
Example embodiments presented herein are directed towards a base station (401), and corresponding method, for scheduling a downlink broadcast transmission using pdsch. The base station (401) is also configured to provide an ofdm pdsch to a wireless terminal (505a) which monitors epdcch for receiving downlink control data.
|Method and base station for controlling transmission of data streams to user equipments in a wireless communication system|
Disclosed is a base station (130) configured to control transmission of data streams from the base station to a user equipment, ue, in a wireless communication system. The base station (130) provides transmission of at least three data streams.
|Method and apparatus for performing device-to-device discovery|
Methods and apparatus for performing device-to-device (d2d) discovery are described. A service discovery process may include a discoverable device (e.g., a wireless transmit/receive unit (wtru)) sending a discovery request, over a wireless connection, for a radio resource for the purpose of performing a transmission for radio frequency (rf) proximity detection for a given service.
|Uplink data sending method and user equipment|
The present invention provides an uplink data sending method and a user equipment. The method includes: distinguishing uplink data to be sent, and obtaining acknowledgement data of downlink tcp service data and uplink tcp service data; buffering the acknowledgement data of the downlink tcp service data in a first buffer, and buffering the uplink tcp service data in a second buffer; and sending in priority the acknowledgement data of the downlink tcp service data in the first buffer.
|Method and apparatus for transmitting control information in wireless communication system|
The present invention relates to a method for receiving a downlink control signal in a tdd-based wireless communication system, and to an apparatus therefor. The method comprises receiving a downlink signal via a downlink interval in a specific frame including the downlink interval, a guard interval and an uplink interval.
|Method and apparatus for coding of harq-ack transmission in tdd systems with downlink carrier aggregation|
Methods and apparatus are provided for a user equipment (ue) configured with multiple cells in a downlink (dl) of a time division duplex (tdd) communication system to determine the coding method for acknowledgement information bits as a function of their number, to apply bundling to the acknowledgement information bits when their number exceeds a first predetermined value, and to partition the acknowledgement information bits, possibly together with other control information bits, into two separate codewords when their total number exceeds a second predetermined value.. .
|Methods, devices and computer program products for interference reduction in tdd systems allowing allocation of flexible subframes for uplink or downlink transmission|
The present invention proposes methods, devices and computer program products in relation to interference reduction, in particular for control channels in tdd systems allowing allocation of flexible subframes for uplink or downlink transmission. In relation thereto, a format of data transmission in flexible subframes in the uplink and/or downlink is modified..
|Communication method and device used for time division duplex system|
Embodiments of the present invention, relating to the field of communications technologies, provide a communication method and device used for a time division duplex system. The communication method includes: adjusting a first uplink-downlink subframe configuration to a second uplink-downlink subframe configuration, where there is an intersection between subframes corresponding to the second uplink-downlink subframe configuration and subframes corresponding to the first uplink-downlink subframe configuration, where the intersection is a set of subframes having a same subframe index and a same subframe type, and the intersection includes at least one uplink subframe and at least one downlink subframe; and communicating, by the user equipment, according to a timing relationship same as a timing relationship corresponding to the first uplink-downlink subframe configuration, with the base station in the at least one uplink subframe and the at least one downlink subframe comprised in the intersection..
|Method for transmitting control information and apparatus for same|
A wireless communication system is disclosed. A method for transmitting uplink control information in a wireless communication system supporting carrier aggregation and operating in tdd includes: generating a first harq-ack (hybrid automatic repeat request—acknowledgement) set for a first cell using a value m; generating a second harq-ack set for a second cell using the value m; and transmitting a bit value corresponding to a third harq-ack set including the first harq-ack set and the second harq-ack set in an uplink subframe n, wherein m=max(m1, m2), max(m1, m2) representing a value being equal to or larger than not smaller between m1 and m2, wherein m1 corresponds to the number of downlink subframes corresponding to the uplink subframe n in the first cell, and m2 corresponds to the number of downlink subframes corresponding to the uplink subframe n in the second cell, wherein the first cell and the second cell have different ul-dl configurations..
|Base station and communication control method|
A base station (enb 100) is defined by 3gpp standards and includes a control unit (140) that, in a case where an uplink signal transmitted from a wireless terminal (ue) being served by another base station to this other base station is detected, determines the frequency band to be assigned to a wireless terminal (ue) being served by the base station (enb 100) on the basis of the frequency band of the detected uplink signal. At least in to the other base station, the frequency band of a downlink signal is made to correspond with the frequency band of the uplink signal..
|Wireless communication method, base station and system|
Embodiments of the present invention provide a wireless communication method, base station and system. The base station includes several led lights and/or several vlc/ir receivers.
|Reference signaling scheme using compressed feedforward codebooks for mu-mimo systems|
A multi-user mimo downlink beamforming system with limited feed forward (200) is provided to enable precoding matrix information to be efficiently provided to a subset of user equipment devices (201.i), where zero-forcing transmit beamformers (wi) are computed at the base station (210) and assembled into a precoding matrix (w). The precoding matrix is encoded using a compact reference signal codebook (225, 207.i) for forward link signaling, either by sending bits indicating the index of the transmission matrix used, or by transmitting one or more precoded pilots or reference signals wherein the pilot signals are precoded using vectors uniquely representative of the transmission matrix used which includes candidate reference signal matrices which meet a predetermined condition number requirement, such as a condition number threshold.
|Generalized reference signaling scheme for multi-user multiple input, multiple output (mu-mimo) using arbitrarily precoded reference signals|
A multi-user mimo downlink beamforming system is provided to enable transmit beamforming vectors to be efficiently provided to a subset of user equipment devices, where spatial separation or zero-forcing transmit beamformers (wi) are computed at the base station and used to generate precoded reference signals. The precoded reference signals are fed forward to the user equipment devices, which apply one or more hypothesis tests to the precoded reference signals to extract the precoding matrix (w), including the specific transmit beamforming vector (wue) designed for the user equipment, and this extracted information is used to generate receive beamformers (vi)..
|Method and device for handling failure of mobility management device in isr activated scenario|
Embodiments of the present invention relate to a method and device for handling a failure of a mobility management device in an isr activated scenario. The method includes: detecting, by a serving gateway, a failure of a first mobility management device; and when the serving gateway receives downlink user plane or control plane data of a user equipment, paging, by the serving gateway, the user equipment using a downlink data notification message including identity information of the user equipment, in a first radio access network connected to the first mobility management device..
|Method for receiving downlink signal, and user device, and method for transmitting downlink signal, and base station|
The present invention provides a method and a device for transmitting/receiving a control channel in a downlink subframe, which divides into a control area and a data area. In the present invention, a first downlink control channel is transmitted in the control area of the downlink subframe, and/or a second downlink control channel is transmitted in the data area of the downlink subframe.
|Method for receiving downlink signal, and user device, and method for transmitting downlink signal, and base station|
The present invention provides a method and a device for transmitting/receiving a control channel in a downlink subframe, which divides into a control area and a data area. The present invention enables the downlink control channel transmitted from the data area of a specific carrier wave to be configured to carry scheduling information on another carrier wave..
|Method and device for controlling the transception of multiple pieces of control information in a wireless communication system|
The present invention relates to a method and device for dynamically controlling the multiple transmission of control information in a wireless communication system. The method for controlling the transception of multiple physical uplink control channels (pucchs) in a wireless communication system comprises: a base station transmitting instruction information, which controls the transmission of multiple pucchs, to a user terminal that performs the transmission of multiple pucchs through either a physical downlink control channel (pdcch), a medium access control (mac) layer, or radio resource control (rrc) signaling; and receiving multiple pucchs from said user terminal according to a multiple transmission instruction in said instruction information.
|Method and apparatus for adjusting transmission timing in wireless access system supporting carrier aggregation|
The present disclosure provides methods for allocating a timing advance (ta) value, which is used in a wireless access system supporting carrier aggregation (ca), methods for adjusting a wireless frame transmission time using the ta value, and apparatuses for supporting same. The method for adjusting the transmission timing in the wireless access system supporting carrier aggregation, according to one embodiment of the present disclosure, comprises the following steps: receiving a physical downlink control channel (pdcch) signal including a reservation bit (for example, a service cell indicator) for indicating at least one serving cell; receiving a media access control (mac) message including the ta value on an uplink wireless frame; and transmitting an uplink signal by applying the ta value from a serving cell indicated by the reservation bit..
|Wireless resource allocation method, wireless resource allocation device, and communication system|
An allocation of wireless resources is performed to avoid interference caused as an uplink and a downlink are mismatched between neighboring cells. When interference at a base station is desired to be reduced, in each portion causing interference at a base station side, an abs is applied to any one of downlink and uplink sub frames.
|Method and apparatus for ack/nack transmission|
A method and an apparatus for ack/nack transmission. When a terminal device only receives a semi-persistent scheduling (sps) physical downlink shared channel (pdsch) and a physical downlink control channel (pdcch) in which a downlink assignment index (dai) value is equal to 1 in a feedback window, the terminal device transmits ack/nack feedback information corresponding to the sps pdsch and ack/nack feedback information corresponding to the pdcch on pucch format 1a/1b resource using pucch format 1b with channel selection or ack/nack bundling..
|Method and apparatus for selectively enabling reception of downlink signaling channels|
In a wireless communication system including a wireless transmit/receive unit (wtru) and at least one node-b, a method and apparatus is used to selectively enable reception of at least one downlink (dl) enhanced uplink (eu) signaling channel established between the wtru and the node-b(s). During the operation of an enhanced dedicated channel (e-dch), the wtru monitors at least one dl eu signaling channel established between the wtru and the node-b(s) only when it is necessary, based on the wtru's knowledge of at least one established standard procedure.
|Configuration and mapping of uplink control channel resource|
The disclosure is related to configuration and mapping of uplink control channel resources. Particularly, the present disclosure relates to configuring and mapping uplink control channel resources for user equipment receiving downlink control information through a downlink control channel newly defined in a data region.
|Token based radio resource management|
The disclosure relates to a method of globally balancing the transmit power in a cellular radio system with tight reuse of frequencies, to a central controller node, and to an access point that in combination with conventional power control schemes balances the downlink transmission power on re-used frequencies in order to balance co-channel interference in a multi-cell environment. The power balancing scheme takes the instantaneous channel variation and co-channel interference into account and satisfies the throughput requirements of the different cells when allocating downlink power to the user equipments.
|Node and method for connection re-establishment|
In some instances, a terminal device may communication with the network infrequently. Therefore, in order to save system resources, a pdn or pdp connection associated with the terminal device may be revoked or deleted.
|Methods and arrangements for transmitting and receiving control information|
Some embodiments provide a method for transmitting a downlink control channel in at least one block of resources. The downlink control channel comprises a set of resource element groups.
|Ofdm/ofdma frame structure for communication systems|
An ofdm/ofdma frame structure technology for communication systems is disclosed. The ofdm/ofdma frame structure technology comprises a variable length sub-frame structure with efficiently sized cyclic prefixes and efficient transition gap durations operable to effectively utilize ofdm/ofdma bandwidth.
|Methods, radio base station and radio network controller|
It is presented a method performed in a first radio base station, rbs, in communication with a radio network controller, rnc. The rnc is configured for multi-flow hsdpa, high-speed downlink packet access, operation and packet data units, pdus, are communicated toward a user equipment, ue, node via the first rbs and at least one second rbs.
|Methods and systems for harq protocols|
Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a harq process, in which the harq process includes a first transmission of an encoder packet and at least one retransmission.
|Wireless resource allocation method and wireless resource allocation device, and communication system|
Inter-cell interference is avoided in a cellular system operated in a tdd scheme. An order of a plurality of configurations are rearranged in the ascending order of the number of downlink sub frames and in the descending order of the number of uplink sub frames, and configurations are switched between neighboring cells according to the rearranged order when different configurations are used in the neighboring cells.
|Method for transmitting/receiving data in wireless communication system and base station for same|
In the present invention, a method for transmitting/receiving data in a wireless communication system supporting carrier aggregation/multiple cells and a base station for same are disclosed. More particularly, the method comprises: receiving from the e node b through a physical downlink control channel (pdcch) of a first cell resource allocation information, which is set as a flag value indicating uplink resource allocation information, when performing cross-cell scheduling on a second cell through a first cell, according to an uplink-downlink configuration of the first cell from a plurality of cells which are set to a user equipment; determining the resource allocation information as a downlink resource allocation information, when the resource allocation information is received from a subframe perspective in which an uplink transmission time is not defined, based on the uplink-downlink configuration of the second cell; receiving the uplink resource allocation information from the e node b via a physical downlink shared channel (pdsch), according to the downlink resource allocation information; and transmitting to the e node b via a physical uplink shared channel (pusch) of the second cell uplink data, according to the uplink resource allocation information..
|Enhanced node b and method for configuring an extension carrier|
An apparatus and method for providing configuration information relating to an extension carrier within a wireless communications network is disclosed herein. In one embodiment, each enhanced node b (enodeb) transmits the configuration information within the downlink subframes of at least one radio frame, wherein the configuration information is transmitted on the downlink shared channel (dl-sch) included in the radio frame.
|Frame structure for a multi-hop wireless system|
A wireless network includes a base station which can serve terminals directly, or via multi-hop transmission paths via relay stations. The base station transmits a downlink sub-frame which includes a first set of frame control information and a second set of frame control information.
|Method for dynamic change of downlink/uplink allocation in lte-tdd systems|
A method of dynamically adjusting the downlink-uplink allocation in a tdd system, includes: transmitting a downlink-uplink allocation signal to at least one user device, wherein the allocation signals specifies a set of flexible subframes within a radio frame that can be flexibly configured as either downlink or uplink subframes; determining if a harq feedback signal falls within a flexible subframe; and re-assigning the harq feedback signal to be transmitted in a non-flexible subframe within the radio frame.. .
|Method, apparatus and system for determining voltage standing wawe ratio in downlink period of radio communication|
The present invention discloses a method for determining a voltage standing wave ratio (vswr) in downlink period of a radio communication, comprising: coupling a forward signal into a transmitter observation receiver (tor) via a radio frequency (rf) switch; feeding a reversed signal in a reversed path from a third port of a circulator into the tor via the rf switch; making down conversion, filtering and converting the forward signal and the reversed signal from an analog signal into digital base-band signal respectively; measuring and storing power levels of the forward signal and the reversed signal in form of digital baseband; and calculating vswr or return loss (rl) value from the stored power levels of the forward signal and the reversed signal. A corresponding apparatus and radio communication system are also provided.
|Error prevention in dynamic uplink/downlink configuration change for time division duplex|
Method and apparatus which prevents or at least significantly reduces errors during dynamic tdd ul/dl configuration changes. Received downlink time division duplex subframes are monitored during a predetermined time window, wherein at least a portion of the subframes includes an uplink/downlink configuration indication.
|Techniques for reducing buffer overflow in a communication system|
A technique for operating a wireless communication device includes transmitting a first downlink rate in a first control message. The first downlink rate is based on a latency of an inter-processor communication link associated with the wireless communication device.