Abstract: The subject technology provides for block acknowledgment requests and block acknowledgment frames that can be used in conjunction with multicast transmissions that include multiple concurrent streams. Thus, the subject technology reduces the overhead associated with multicast transmissions that include multiple concurrent streams by aggregating the acknowledgments across multiple streams into a block acknowledgment, thereby increasing the effective throughput of such transmissions and overall network efficiency.

Abstract: There are disclosed acoustic filters and radios incorporating the acoustic filters. A filter includes a first filter port, a second filter port, and n sub-filters, where n is an integer greater than one. Each sub-filter has a first sub-filter port connected to the first filter port and a second sub-filter port connected to the second filter port. A first acoustic resonator is connected from the first filter port to ground, and a second acoustic resonator is connected from the second filter port to ground. The first and second acoustic resonators are configured to create respective transmission zeros adjacent to a lower edge of a passband of the filter.

Abstract: The present application relates to a gain control method and an apparatus, comprising an automatic gain controller. An input power of a PSS in an input signal is detected in real time, a rated power of a downlink PSS that acts as a gain control threshold of the automatic gain controller is acquired, and the automatic gain controller is controlled to adjust a value of gain attenuation according to magnitudes of the input power of the PSS and the rated power of the downlink PSS, which is used to adjust an uplink gain and a downlink gain.

Abstract: A communication method and a system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with an internet of things (IoT) technology are provided, which may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and an apparatus for transmitting a reference signal are provided. The method includes receiving, from a base station, a first parameter and a second parameter associated with a sound reference signal (SRS) by higher layer signaling, identifying a bandwidth for the SRS based on the first parameter and the second parameter, and transmitting, to the base station, the SRS based on the identified bandwidth for the SRS.

Abstract: Amplification of received signals in the first and second frequency bands is activated in the absence of a transmission signal in the circuit arrangement in both the first frequency band and the second frequency band. In response to a detection of a transmission signal in the circuit arrangement, the detected transmission signal is checked as to whether the detected transmission signal can be unambiguously assigned to the first frequency band or the second frequency band. If the check reveals that the detected transmission signal cannot be unambiguously assigned to the first frequency band or the second frequency band, a first transmission amplifier path for amplifying the transmission signal in the first frequency band and a first receiving amplifier path for amplifying received signals in the first frequency band are activated.

Abstract: This application provides a method including: receiving first configuration information of an SRS resource from a network device, where the first configuration information includes a repetition factor of the SRS resource, and the repetition factor of the SRS resource is a quantity N of positions at which the SRS resource is mapped to a same subcarrier and mapped to at least one continuous symbol in one time unit, where N?1 and is an integer; determining at least one first frequency domain resource to which the SRS resource is mapped in a first time unit.

Abstract: Examples described herein relate to a network interface comprising physical medium dependent (PMD) circuitry, the PMD circuitry to during link training of at least one lane consistent with IEEE 802.3, exit to TIME_OUT state during TRAIN_LOCAL state based on consideration of expiration of a wait timer, loss of local_tf_lock state, and loss of remote_tf_lock state. In some examples, during link training for at least one lane consistent with IEEE 802.3, the PMD circuitry is to exit to TIME_OUT state during TRAIN_REMOTE state based on consideration of expiration of a wait timer, loss of local_tf_lock state, and loss of remote_tf_lock state. In some examples, link training consistent with IEEE 802.3 comprises performance of the PMD control function in Section 162.8.11 of IEEE 802.3ck.

Abstract: An electronic device and a method performed by an electronic device are provided. A number of frequency bands of a plurality of carriers to be used in a plurality of communication circuits for communication is determined. The plurality of communication circuits process carrier signals in different frequency bands. A switching operation, performed by at least one switch, is controlled based on the number of frequency bands and a specified condition that is based on frequency bands able to be processed by an LNA included in each of the plurality of communication circuits. The carrier signals of the plurality of carriers is processed using at least one communication circuit. The at least one switch is alternately connected to two communication circuits and is configured to provide a reception carrier signal from at least one antenna to one of the two communication circuits based on a switching operation.

Abstract: In some embodiments, a wireless device receives configuration parameters of first reference signals (RSs) and second RSs. A first RS of the first RSs is selected based on signal strengths of first RSs. A second RS of the second RSs is selected based on signal strengths of the second RSs. A random access preamble based on at least one of the first RS and the second RS is transmitted. A random access response comprising an uplink grant scheduling uplink resources for uplink transmissions with repetitions is received. First repetitions, of the repetitions of a transport block, with a first transmission power based on the first RS are transmitted via the uplink resources. Second repetitions, of the repetitions of the transport block, with a second transmission power based on the second RS are transmitted via the uplink resources.

Abstract: Provided is a communication apparatus that flexibly switches execution/non-execution of FD. The communication apparatus includes the followings: a resource allocation unit that allocates, to another communication apparatus, reception radio resources in a predetermined frequency channel and allocates transmission radio resources at least partially overlapping the reception radio resources on a time axis; and a notification unit that notifies the other communication apparatus of information regarding the reception radio resources and the transmission radio resources. The resource allocation unit further allocates transmission radio resources at least partially overlapping the reception radio resources on a frequency axis.

Abstract: Methods and apparatuses for determining HARQ timing in a communication system supporting Carrier Aggregation (CA) are provided. A method for receiving, at a BS, a HARQ feedback from a UE in a communication system supporting CA of a Pcell and at least one Scell is provided. The Pcell and Scell support either FDD or TDD. The method comprises: transmitting a downlink physical channel through one of the Pcell and Scell; receiving the HARQ feedback corresponding to the downlink physical channel of the Pcell at a first timing predetermined for the Pcell; and receiving the HARQ feedback corresponding to the downlink physical channel of the Scell at a second timing. The second timing is determined according to one or more of duplex modes of the Pcell and the Scell, a scheduling mode of the Scell, and predefined rules.

Abstract: A repeater device that includes control circuitry, which executes a network time synchronization with the base station, where the repeater device functions as a remote antenna for the base station or a remote radio for the base station based on the network time synchronization. The control circuitry further activates a slave mode in the repeater device, and executes a synchronization with a modem of a first wireless communication device in which the repeater device in the slave mode follows a radio state of the modem of the first wireless communication device. In the slave mode, the repeater device is exclusively shared with the first wireless communication device or electronic accessories associated with the first wireless communication device and not shared with other wireless communication devices present in a same area of the first wireless communication device.

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently performing and reporting reference signal received power (RSRP) measurements. In particular, the techniques described herein may allow a user equipment (UE) to efficiently identify reference signals on which to perform RSRP measurements (e.g., based on signaling from a base station), identify when to report RSRP measurements (e.g., aperiodically, periodically, or semi-persistently), and identify a channel on which to report RSRP measurements (e.g., a sidelink channel or an uplink channel). In addition, the techniques described herein may also allow a UE to efficiently identify open loop parameters to use to determine an appropriate transmit power for transmitting to another UE over a sidelink.

Abstract: Radio frequency signal boosters for high frequency cellular communications are provided herein. In certain embodiments, a signal booster system for providing high frequency wireless signal reception of a 5G network inside a building is provided. The signal booster system includes one or more auxiliary signal boosters for extending coverage within rooms of the building. For example, an auxiliary signal booster can include a donor unit located in a first room and having a base station antenna and booster circuitry integrated therewith. The auxiliary signal booster further includes a server unit located in a second room and having a having a mobile station antenna integrated therewith. The donor unit and the server unit are connected by a short cable.

Abstract: A terminal is disclosed including a receiver that receives a signal of a downlink shared channel; and a transmitter that transmits Acknowledgement (ACK)/Negative Acknowledgement (NACK) information for the signal of the downlink shared channel using an uplink control channel in a time resource included in a plurality of time resource candidates. In other aspects, a radio communication method and a base station are also disclosed.

Abstract: Described is a method and device for detecting a discontinuous transmission state (DTX) at an uplink control information (UCI) receiver device in a wireless communication system. The method involves receiving a linear block encoded signal on an uplink (UL) at said UCI receiver device and processing the received linear block encoded signal after resource element (RE) dernapping to obtain channel estimation data. The method includes determining from said channel estimation data a DTX metric for one or more selected resource blocks (RBs) and determining if a DTX state has occurred by comparing the determined DTX metric to a calculated, selected, or predetermined threshold.

Abstract: A method for traffic management of proprietary data, in a network system comprising a gateway and a sensor communicatively coupled to the gateway via a data bus, includes determining, by a processor of a bridging device, whether a dedicated pipeline for transmission to the gateway is available, in response to determining that the dedicated pipeline is available, transmitting, by the processor, a request for the dedicated pipeline, determining, by the processor, whether the dedicated pipeline has been established between the bridging device and the gateway, and in response to determining that the dedicated pipe has been established, requesting, by the processor, the proprietary data from the sensor, transmitting, by the processor, the proprietary data from the sensor to the gateway via the dedicated pipeline, and transmitting, by the processor, a dedicated pipeline release signal to the gateway indicating release of dedicated pipeline between the bridging device and the gateway.

Abstract: A switching control module can optimize time division duplexing operations of a distributed antenna system (“DAS”). The switching control module can include a measurement receiver and a processor. The measurement receiver can measure signal powers of downlink signals in a downlink path of the DAS. The processor can determine start times for downlink sub-frames transmitted via the downlink path based on downlink signal powers measured by the measurement receiver exceeding a threshold signal power. The processor can identify a clock setting that controls a timing of switching signals used for switching the DAS between an uplink mode and a downlink mode. The processor can statistically determine a switching time adjustment for the clock setting based on switching time differentials between the clock setting and the start times. The processor can update the clock setting based on the switching time adjustment.

Abstract: A user station for a bus system and a method for transmitting a message at different bit rates in a bus system is provided. The user station includes a communication control unit for creating a message for at least one further user station of the bus system. The communication control unit is designed to provide in the message a first phase to be transmitted at a first bit rate, and to provide a second phase to be transmitted at a second bit rate, which is faster or slower than the first bit rate. The communication control unit is designed to provide in the message between the first and second phase a predetermined bit pattern for a bit rate switchover between the first and second bit rate. The predetermined bit pattern includes, both before and after the bit rate switchover, a flank for synchronization.

Abstract: A scheduling apparatus and a method for interference control in a mobile communication system supporting a carrier aggregation or dual connectivity or multi-connectivity technology in which a terminal uses a plurality of frequency resources at the same time are provided. Specifically, a first base station in a wireless communication system includes a transceiver and a processor connected to the transceiver and configured to obtain resource information of a second base station transmitted by the second base station, determine a resource assignment pattern based on the resource information of the second base station, assign uplink (UL) resources of the LTE base station for an UL channel based on the resource assignment pattern to reduce interference, and assign uplink (UL) resources of the first base station for an UL channel based on the resource assignment pattern to reduce interference.

Abstract: The present disclosure provides for role switch with perceptible continuity of audio streaming during the role switch. The role switch occurs in two stages, with a first stage including a host link role switch and a second stage including a relay link role switch. For example, the host link role switch concerns the relationship of each audio receiver device to the host device, where the master device receives audio directly from the host for relay to the slave. The relay link role switch concerns a relationship between the audio receiver devices. For example, the communication master controls timing, such as when to send packets between the master and slave devices. Each stage of the two stage procedure may take approximately 100 ms or less. Between each stage, the audio buffers of the master and slave devices have an opportunity to refill.

Abstract: In accordance with an example embodiment of the present invention, a method comprising: receiving, by a user equipment, instructions based on a determination that a communication sent from the user equipment to at least one network comprising signaling to at least one network node over continuous time slots of at least one uplink connection would cause a problem with the communication; and based on the instructions, preventing by the user equipment the signaling over at least one particular time slot of the at least one uplink connection to overcome the problem, wherein the instructions are received in a recurring pattern indicating the at least one particular time slot.

Abstract: This application provides a method including: receiving first configuration information of a sounding reference signal (SRS) resource from a network device, where the first configuration information includes a repetition factor of the SRS resource, and the repetition factor of the SRS resource is a quantity N of positions at which the SRS resource is mapped to a same subcarrier and mapped to at least one continuous symbol in one time unit, where N?1 and is an integer; determining at least one first frequency domain resource to which the SRS resource is mapped in a first time unit.

Abstract: Some techniques and apparatuses described herein protect components of a user equipment (UE), such as a low noise amplifier (LNA), from internal interference. For example, the LNA may be disconnected from a receive chain during periods of high internal interference, and may be reconnected to the receive chain during periods of low internal interference. Furthermore, some techniques and apparatuses described herein improve performance by adjusting operations of the UE to account for and/or offset increased internal interference due to a receive chain that does not include a surface acoustic wave (SAW) filter to remove unwanted radio frequency signals. For example, one or more operations of a baseband processor may be modified to account for the increased internal interference. Additionally, or alternatively, reporting of channel state information may be modified to account for increased internal interference of the UE. Additional details are described herein.

Abstract: Embodiments of an access point (AP), station (STA) and method of communication are generally described herein. The AP may be included in a plurality of APs affiliated with a multi-link AP logical entity. As part of a multi-link AP logical entity, the plurality of APs may share a common medium access control (MAC) data service interface to an upper layer. The AP may exchange signaling with an STA as part of a multi-link setup process between the multi-link TP logical entity and a multi-link non-AP logical entity. The STA may be included in a plurality of STAs affiliated with the multi-link non-AP logical entity. The multi-link setup process may establish a link between each AP of the plurality of APs and a corresponding STA of the plurality of STAs.

Abstract: A slave communication apparatus including a clock recovering section that recovers a clock signal from a transmission signal having a first signal value when the clock is a first level, a second signal value when the clock is a second level and data has a first data value, and a third signal value between the first and second signal values when the clock is the second level and the data has a second data value; and a data recovering section that recovers the data, wherein the data recovering section sets the data threshold value to be a first setting value between the second and third signal values in response to the recovered data having the second data value, and sets the data threshold value to be a second setting value between the first and third signal values in response to the recovered data having the first data value.

Abstract: A method and an apparatus for allocating a flexible transmission slot in a wireless local area network (LAN) system are disclosed. A flexible transmission slot allocation method of an access point (AP) in a wireless local area network (WLAN) system according to an exemplary embodiment includes transmitting a beacon including a traffic indication map (TIM) bit to a station, receiving a power save poll (PS-Poll) from the station in a slot implicitly allocated by the TIM bit, and transmitting an acknowledgement (ACK) including transmission slot allocation information on downlink data to the station.

Abstract: A digital subscriber line transceiver for transmitting data over a twisted metallic pair using an orthogonal frequency division multiplex technique and employing a time division duplex mode of operation is operable to adopt a plurality of different framing structures including a first framing structure having a frame duration equal to a first predetermined frame duration period and including a downstream set of symbols and an upstream set of symbols, with gaps after each set of symbols summing to a total gap duration of one symbol duration. The different framing structures further include a second framing structure having a frame duration equal to the first predetermined frame duration period and including first and second downstream sets of symbols, first and second upstream sets of symbols and gaps after each of these sets of symbols summing to a total gap duration of an integer number of one or more symbol durations.

Abstract: An ECU compares a plurality of pieces of data that include the same identification information if they are received within a preset time range. If it is determined, as a result of the comparison, that there are one or more data groups each consisting of data having the same content, and the number of largest data groups with the largest number of pieces of data among the one or more data groups is one, the ECU selects data included in the largest data group as proper data. In the ECU, if it is determined that, as a result of comparison, that there is no data group, or the number of largest data groups is greater than one, the contents of the plurality of pieces of data received within the time range are ignored.

Abstract: A method for performing an uplink (UL) multi-user (MU) transmission performed by a station (STA) device in a Wireless LAN (WLAN) system according to an embodiment of the present invention may include receiving a Downlink (DL) MU Physical Protocol Data Unit (PPDU) including a physical preamble and a data field; and where the data field includes at least one Mac Protocol Data Unit (MPDU), where the at least one MPDU includes a trigger frame or a MAC header, where the trigger frame or the MAC header includes trigger information for a UL MU transmission of an ACK (Acknowledge) frame, and performing a UL MU transmission of the ACK frame in response to the DL MU PPDU based on the trigger information.

Abstract: A method and device for selecting a camping cell are provided. The method includes that: terminal equipment measures licensed frequency bands and unlicensed frequency bands according to configuration information, the configuration information including channel signal quality measurement information and/or channel interference level measurement information, wherein the channel quality measurement information may include a Reference Signal Receiving Power (RSRP) parameter and/or a Reference Signal Receiving Quality (RSRQ) parameter, and the channel interference level measurement information may include a Received Signal Strength Indicator (RSSI) parameter; and the terminal equipment determines a camping cell according to a result of measurement over the licensed frequency bands and the unlicensed frequency bands.

Abstract: The present disclosure discloses an uplink power control method, a device and a system. A terminal device may first determine a target downlink signal for performing a downlink path loss estimation, perform the downlink path loss estimation based on the determined target downlink signal to obtain a downlink path loss estimate, then can determine transmitting power of an uplink signal according to the downlink path loss estimate, and transmit the uplink signal according to the determined transmitting power, thereby implementing uplink power control in a beamforming scenario, and improving the system performance.

Abstract: Apparatuses, methods, and systems are disclosed for data acknowledgment. One apparatus includes a transmitter that transmits data to a device. The apparatus may include a processor that determines a response window having multiple subframes for receiving an acknowledgement corresponding to the data. The apparatus may include a receiver that receives the acknowledgement within the response window.

Abstract: Systems and methods related to optimized selection, or determination of, Hybrid Automatic Repeat Request (HARQ) feedback modes for downlink transmissions by considering Time Division Duplexing (TDD) uplink/downlink (UL/DL) configuration, transmission mode, cell load, and/or traffic type are disclosed. In this manner, performance can be improved.

Abstract: A single-line serial data transmission circuit having a master circuit 1 and a slave circuit 4, the master circuit 1 having a data clock adder 2 for writes and a data receiver 3 for reads. The slave circuit 4 has an active generator 5, a data clock separator 6 for writes, and a data transmitter 7 for reads. The master circuit 1 and the slave circuit 4 are connected by one length of a signal line 8. When the master circuit 1 writes data to the slave circuit 4, a signal synthesized from a clock signal and a data signal is transmitted to the slave circuit 4 via the signal line 8 by the master circuit 1, and the clock signal and the data signal are extracted from the transmitted signal in the slave circuit 4 through the data clock separator 6.

Abstract: One disclosure of the present specification provides a user equipment method. The method comprises the steps of: receiving a time division duplex (TDD) uplink (UL)-downlink (DL) configuration from a frequency division duplex (FDD)-based primary cell; receiving downlink data from at least one secondary cell; determining an uplink subframe of the primary cell to transmit a hybrid automatic repeat request (HARQ) acknowledgement (ACK)/negative-acknowledgement (NACK) for the received downlink data, which is transmitted from the at least one secondary cell, according to the TDD UL-DL configuration; and transmitting the HARQ ACK/NACK from the determined uplink subframe to the primary cell.

Abstract: A method and device for transmitting an uplink signal are provided. The method includes: determining, by a terminal device, a target downlink resource for transmitting a target downlink signal among a plurality of downlink resources; determining, by the terminal device, target uplink pre-coding information according to the target downlink resource and a predetermined corresponding relationship, wherein the predetermined corresponding relationship is a corresponding relationship between downlink resources and uplink pre-coding information; and transmitting, by the terminal device, an uplink signal according to the target uplink pre-coding information.

Abstract: A hybrid time-division multiplexing comprises: S1, determining a length of a single time cycle; S2, formulating a working state table corresponding to the length of the single time cycle; S3, dividing the single time cycle into a synchronous time-division multiplexing time section and/or a statistical time-division multiplexing time section with a ratio of the synchronous time-division multiplexing time section to the single time cycle no less than 0 and no greater than 1; and S4, according to the working state table, accessing the channel and transmitting information by the MAC protocol user adopting synchronous time-division multiplexing in the synchronous time-division multiplexing time section, and/or accessing the channel and transmitting information by the MAC protocol user adopting statistical time-division multiplexing in the statistical time-division multiplexing time section.

Abstract: Various solutions for flexible scheduling of uplink transmissions with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a first downlink control information (DCI) scheduling an uplink transmission. The apparatus may receive a second DCI to cancel the uplink transmission. The apparatus may cancel at least a part of the uplink transmission. The first DCI may comprise a first hybrid automatic repeat request (HARQ) process identification (ID). The second DCI may comprise a second HARQ process ID. The second HARQ process ID may be identical to the first HARQ process ID.

Abstract: Methods, systems, computer-readable media, and apparatuses for providing dynamic block control of multi-bitrate video are described. In some embodiments, a computing device may determine transcoder conditions of a transcoder independent of a client device. The computing device may dynamically adjust a block size of one or more blocks of a stream based on the transcoder conditions. In some embodiments, a computing device may receive a stream. The client device may package the stream into a first packaged stream having a first block size and a second packaged stream having a second block size less than the first block size. In some embodiments, a client device may determine an actual minimum number of blocks to buffer prior to initiating content playback based on a received predicted network and/or transcoder quality of service forecast. The client device may adjust its preset minimum number of blocks to the actual minimum number of blocks.

Abstract: Methods and systems for operation in a wireless communication system are provided. A first transmission may be initiated using at least a first portion of physical layer resources. A second transmission may be initiated using at least a second portion of the same physical layer resources. The first transmission may be any one of a puncturing transmission, interfering transmission, delay-sensitive transmission, or short transmission. The second transmission may be an on-going transmission or a long transmission.

Abstract: A method for receiving, by a terminal, a signal in a wireless communication system comprises: a step of receiving, from a base station, information indicating a subframe configuration type of subframes bundled into a plurality of subframe units; and a step of receiving, from the base station, a signal of a service corresponding to the indicated subframe configuration type in the bundled subframes, wherein the subframe configuration type of the bundled subframes is determined on the basis of the characteristics of the service to be provided from the bundled subframes.

Abstract: A base station device includes: a signal receiving unit to receive a downlink signal, which is transmitted from an adjacent base station over a downlink frequency band of a frame for the adjacent base station, over an uplink frequency band of a silent inverted frame during a first time interval, during which the base station device uses the silence inverted frame; a measuring unit to measure a channel environment with the adjacent base station based on the downlink signal from the adjacent base station; and an interference removing unit configured to remove the signal interference induced from the adjacent base station by removing the downlink signal received from the adjacent base station over a uplink frequency band of the base station device during a second time interval based on the channel environment with the adjacent base station.

Abstract: A packet is identified at a port of a serial data link, and it is determined that the packet is associated with an error. Entry into an error recovery mode is initiated based on the determination that the packet is associated with the error. Entry into the error recovery mode can cause the serial data link to be forced down. In one aspect, forcing the data link down causes all subsequent inbound packets to be dropped and all pending outbound requests and completions to be aborted during the error recovery mode.

Abstract: Systems and methods are disclosed for performing hybrid automatic repeat request (HARQ) for grant-free uplink transmissions. Some of the systems and methods disclosed herein may address problems such as how to perform acknowledgement (ACK) and/or negative acknowledgement (NACK), how to determine and signal retransmission timing, how to determine the transmission/retransmission attempt and the redundancy version (RV), and/or how to perform the HARQ combining.

Abstract: First and second pluralities of packets transmitted between UE and the USN over a first interface and a second interface are continuously captured. The first, second and third pluralities contains temporary and permanent identifying information and ciphering key information. A fourth plurality of packets transmitted between the USN and a HSS over a fourth interface is captured. The temporary, permanent identifying information and the ciphering key information are correlated to determine mappings stored in a data repository. A fifth plurality transmitted over a fifth interface is continuously captured. Permanent identifying information corresponding to the temporary identifying information retrieved from the unciphered packets of the fifth plurality is retrieved from the data repository based on the stored mappings. NAS deciphering key information corresponding to the retrieved permanent identifying information is retrieved.

Abstract: Provided are a radio terminal device, a radio base station device, and a channel signal forming method which can prevent quality degradation of the downlink resource allocation information by reducing the frequency of the zero information addition process to the downlink resource allocation information when executing communication using an uplink unit band and multiple downlink unit bands correlated to the uplink unit band. A base station includes: a PDCCH generation unit which includes the uplink allocation information relating to the uplink unit band only in some of the channel signals formed for each of the downlink unit bands; and a padding unit which adds zero information to the downlink allocation information only in the selected some channel signals having the bandwidth of the corresponding downlink unit band smaller than that of the uplink unit band until the downlink allocation information size becomes equal to the uplink allocation information size.

Abstract: The present disclosure provides for role switch with perceptible continuity of audio streaming during the role switch. The role switch occurs in two stages, with a first stage including a host link role switch and a second stage including a relay link role switch. For example, the host link role switch concerns the relationship of each audio receiver device to the host device, where the master device receives audio directly from the host for relay to the slave. The relay link role switch concerns a relationship between the audio receiver devices. For example, the communication master controls timing, such as when to send packets between the master and slave devices. Each stage of the two stage procedure may take approximately 100 ms or less. Between each stage, the audio buffers of the master and slave devices have an opportunity to refill.

Abstract: One disclosure of the present specification provides a user equipment method. The method comprises the steps of: receiving a time division duplex (TDD) uplink (UL)-downlink (DL) configuration from a frequency division duplex (FDD)-based primary cell; receiving downlink data from at least one secondary cell; determining an uplink subframe of the primary cell to transmit a hybrid automatic repeat request (HARQ) acknowledgement (ACK)/negative-acknowledgement (NACK) for the received downlink data, which is transmitted from the at least one secondary cell, according to the TDD UL-DL configuration; and transmitting the HARQ ACK/NACK from the determined uplink subframe to the primary cell.

Abstract: Disclosed is a method for allowing a terminal to transmit and receive signals to and/from a base station in a wireless communication system using a time division multiplexing method. Specifically, the method comprises the steps of: receiving a request signal for resetting into a second uplink/downlink setting while transmitting and receiving a signal according to a first uplink/downlink setting; terminating an uplink retransmission process associated with a specific uplink subframe when the use of the specific uplink subframe is changed into a downlink subframe according to the second uplink/downlink setting; and applying the second uplink/downlink setting at a specific time point to transmit and receive signals.