WO2020258301A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020258301A1
WO2020258301A1 PCT/CN2019/093871 CN2019093871W WO2020258301A1 WO 2020258301 A1 WO2020258301 A1 WO 2020258301A1 CN 2019093871 W CN2019093871 W CN 2019093871W WO 2020258301 A1 WO2020258301 A1 WO 2020258301A1
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WIPO (PCT)
Prior art keywords
subframe
uplink
downlink
denb
downlink subframe
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PCT/CN2019/093871
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English (en)
Chinese (zh)
Inventor
左宋
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华为技术有限公司
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Priority to PCT/CN2019/093871 priority Critical patent/WO2020258301A1/fr
Publication of WO2020258301A1 publication Critical patent/WO2020258301A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • This application relates to the field of mobile communication technology, and in particular to a communication method and device.
  • a relay transmission technology In the long term evolution (LTE) system, in order to improve the coverage of the base station, a relay transmission technology is introduced, which is called a relay communication system.
  • a relay communication system the signals transmitted between network equipment and terminal equipment are forwarded through the relay equipment to improve the stability and throughput of the system.
  • the architecture of the relay communication system may be as shown in Fig. 1, including node 1 (network equipment), node 2 (relay equipment), and node 3 (terminal equipment).
  • the terminal device can be directly connected or connected to the network device through at least one relay device to form a wireless connection, so that the terminal device can successfully access the network based on the wireless connection, and finally realize business communication.
  • the wireless connection (marked as L1) is called the downlink transmission link
  • the wireless connection (marked as L2) and the wireless connection (marked as L3) can be regarded as the uplink transmission link, among which, in order to distinguish, the wireless connection ( L2) is called the uplink access link
  • the wireless connection (L3) is called the uplink backhaul relay link.
  • the LTE system defines two different duplex modes: frequency division duplexing (FDD) and time division duplexing (TDD).
  • FDD frequency division duplexing
  • TDD time division duplexing
  • network equipment schedules relay equipment and terminal equipment in a time-division manner to share uplink air interface resources, so as to avoid mutual interference between relay equipment in sending and receiving.
  • uplink resource allocation method and physical uplink shared channel Physical Uplink Shared Channel, PUSCH
  • HARQ Hybrid Automatic Repeat Request
  • the present application provides a communication method and device, which are used to provide a scheduling timing of an uplink relay link to avoid possible conflicts in PUSCH synchronization HARQ.
  • an embodiment of the present application provides a communication method, which is applied to a communication system including a relay device, and the method includes: a network device sends configuration information to a terminal device, and the configuration information may be used to instruct the terminal device Send the uplink subframe of the first uplink channel to the relay device, and the relay device sends the uplink subframe of the second uplink channel to the network device, so that the network device can schedule the terminal device in the subframe according to the configuration information
  • the first uplink channel is sent to the relay device on n1, and the relay device is scheduled to send the second uplink channel to the network device in the subframe n1+k1.
  • the method may be executed by a first communication device, and the first communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system.
  • the communication device is a network device.
  • subframe n1+K is the subframe where the network device sends HARQ feedback to the terminal device
  • n1 is a positive integer
  • k1 and K are both integers greater than 1
  • subframe n1+K is the same as subframe n1.
  • the time difference between +k1 can ensure that the network device correctly receives and decodes the second uplink channel sent by the relay device to the network device on the subframe n1+k1. It can be seen that in the relay communication system, the method provided in the embodiments of the present application can enable the DeNB to have enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback, thereby avoiding possible conflicts of PUSCH synchronization HARQ.
  • the difference between the K and the k1 is greater than or equal to 2.
  • the difference between K and k1 can be limited, so as to ensure that the DeNB has enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback.
  • the network device sends configuration information to the terminal device, including:
  • the network device sends MSG4 to the terminal device, where MSG4 carries configuration information; or,
  • the network device sends a radio resource control RRC connection reconfiguration message to the terminal device, where the RRC connection reconfiguration message carries configuration information; or,
  • the network device sends a system message to the terminal device, where the system message carries configuration information.
  • the network device can notify the terminal device of configuration information in multiple ways. For example, it can notify the terminal device of the configuration information by sending MSG4, RRC connection reconfiguration message or system message to the terminal device, which is more flexible.
  • the configuration information includes a time division multiplexing TDM uplink and downlink subframe ratio, where:
  • n1 is 1 or 4, k1 is 3 or 4; n1 is 2 or 5, corresponding to k1 is 2 or 3; when n1 is 3 or 6, k1 is 2;
  • n1 is 1 or 4
  • k1 is 2, 3 or 4
  • n1 is 2 or 5
  • k1 is 2 or 3;
  • n1 is 1 or 4
  • k1 is 2, 3 or 4;
  • n1 is 1 or 2
  • k1 is 2, 3 or 4;
  • TDM uplink and downlink subframe ratio 6 when n1 is 1, k1 is 3 or 4; when n1 is 2 or 5, k1 is 2 or 3; when n1 is 3, k1 is 2; when n1 is 4 , K1 is 2, 3 or 4.
  • the configuration information may include the ratio of TDM uplink and downlink subframes to inform terminal equipment and relay equipment to use TDM for uplink and downlink transmission, which is compatible with the existing LTE system and is easy to implement.
  • different scheduling timings can be specified, that is, specify the time domain position of the network equipment to schedule the terminal equipment for uplink transmission, and the network equipment to schedule the relay equipment for the uplink relay transmission. Therefore, the terminal device and the relay device can perform the uplink channel relay process according to the scheduling timing corresponding to the TDM uplink and downlink subframe ratio included in the configuration information, so as to avoid possible conflicts of PUSCH synchronization HARQ.
  • the configuration information includes a time division duplex TDD uplink and downlink subframe ratio, where:
  • n1 is 1 or 4
  • k1 is 2, 3 or 4;
  • n1 is 1 or 2
  • k1 is 2, 3 or 4;
  • the configuration information may include the ratio of TDD uplink and downlink subframes to inform terminal equipment and relay equipment to use TDM for uplink and downlink transmission, which is compatible with the existing LTE system and is easy to implement.
  • TDD uplink and downlink subframe ratios different scheduling timings can also be specified. Therefore, terminal equipment and relay devices can perform the uplink channel relay process according to the scheduling timing corresponding to the TDD uplink and downlink subframe ratios included in the configuration information. , To avoid possible conflicts in PUSCH synchronization HARQ.
  • the method further includes:
  • the network device schedules the terminal device to send a downlink response ACK feedback to the relay device on subframe n2, and schedules the relay device to send a response to the relay device on subframe n2+k2
  • the network device sends the third uplink channel.
  • the configuration information can also instruct the terminal device to send a downlink response ACK feedback to the relay device on subframe n2, and the relay device sends a third uplink channel to the network device on subframe n2+k2 to ensure that the terminal When the device and the relay device perform the uplink channel relay process according to the configuration information, the utilization rate of the downlink subframe is improved.
  • the configuration information includes TDM uplink and downlink subframe ratios, where:
  • n2 is 1 or 4
  • k2 is 3
  • n2 is 2, 3, 5, and 6, k2 is 2;
  • n2 1, 2, 4, and 5, k2 is 2;
  • n2 is 1 or 4
  • k2 is 2;
  • Implementation mode one for different TDM uplink and downlink subframe ratios, different scheduling timings can be specified, that is, the time domain location at which network equipment schedules terminal equipment for downlink transmission and corresponding downlink ACK feedback, and network equipment schedules relay equipment Where to perform the relay transmission, so as to ensure that when the terminal device and the relay device perform the uplink channel relay process according to the configuration information, all the downlink subframes can be used, which improves the resource utilization rate.
  • the configuration information includes TDD uplink and downlink subframe ratios, where:
  • n2 1, 2, 4, and 5, k2 is 2;
  • Implementation mode two for different TDD uplink and downlink subframe ratios, different scheduling timings are also specified, so as to ensure that when terminal equipment and relay equipment perform the uplink channel relay process according to the configuration information, all downlink subframes can be Utilize and improve resource utilization.
  • an embodiment of the present application provides a communication method, which is applied to a communication system including a relay device, and the method includes:
  • the terminal device receives configuration information from the network device, where the configuration information is used to instruct the terminal device to send the uplink subframe of the first uplink channel to the relay device, and the relay device to send the second uplink channel to the network device Uplink subframe;
  • the relay device sends the second uplink channel to the network device in subframe n1+k1, and the subframe n1+K is for the network device to send an automatic hybrid retransmission request to the terminal device
  • the n1 is a positive integer
  • the k1 and K are both integers greater than 1
  • the time difference between the subframe n1+K and the subframe n1+k1 can guarantee all
  • the network device correctly receives and decodes the second uplink channel sent by the relay device to the network device in the subframe n1+k1.
  • the method can be executed by a second communication device.
  • the second communication device can be a terminal or a communication device capable of supporting the terminal to implement the functions required by the method, and of course it can also be another communication device, such as a chip system.
  • the second communication device is a terminal.
  • the difference between the K and the k1 is greater than or equal to 2.
  • the terminal device receives configuration information from the network device, including:
  • the terminal device receives the message MSG4 from the network device, where the MSG4 carries the configuration information; or,
  • the terminal device receives the RRC connection reconfiguration message from the network device, where the RRC connection reconfiguration message carries the configuration information; or,
  • the terminal device receives a system message from the network device, where the system message carries the configuration information.
  • the configuration information includes a time division multiplexing TDM uplink and downlink subframe ratio, where:
  • n1 is 1 or 4, k1 is 3 or 4; n1 is 2 or 5, corresponding to k1 is 2 or 3; when n1 is 3 or 6, k1 is 2;
  • n1 is 1 or 4
  • k1 is 2, 3 or 4
  • n1 is 2 or 5
  • k1 is 2 or 3;
  • n1 is 1 or 4
  • k1 is 2, 3 or 4;
  • n1 is 1 or 2
  • k1 is 2, 3 or 4;
  • TDM uplink and downlink subframe ratio 6 when n1 is 1, k1 is 3 or 4; when n1 is 2 or 5, k1 is 2 or 3; when n1 is 3, k1 is 2; when n1 is 4 , K1 is 2, 3 or 4.
  • the configuration information includes a time division duplex TDD uplink and downlink subframe ratio, where:
  • n1 is 1 or 4
  • k1 is 2, 3 or 4;
  • n1 is 1 or 2
  • k1 is 2, 3 or 4;
  • it also includes:
  • the terminal device sends a downlink response ACK feedback to the relay device in subframe n2 according to the configuration information, wherein the relay device sends a third uplink response to the network device in subframe n2+k2 channel.
  • the configuration information includes TDM uplink and downlink subframe ratios, where:
  • n2 is 1 or 4
  • k2 is 3
  • n2 is 2, 3, 5, and 6, k2 is 2;
  • n2 1, 2, 4, and 5, k2 is 2;
  • n2 is 1 or 4
  • k2 is 2;
  • the configuration information includes TDD uplink and downlink subframe ratios, where:
  • n2 1, 2, 4, and 5, k2 is 2;
  • this application provides a communication device, which may be a terminal device or a network device, or a chip.
  • the device has the function of implementing the embodiments of any one of the first aspect or the second aspect described above. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • a communication device including: a processor and a memory; the memory is used to store computer execution instructions, and when the device is running, the processor executes the computer execution instructions stored in the memory to make the device Execute the communication method according to any one of the above-mentioned first aspect or the first aspect, or make the device execute the communication method according to any one of the above-mentioned second aspect or the second aspect.
  • the present application also provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which when run on a computer, cause the computer to execute the methods described in the above aspects.
  • the present application also provides a computer program product including instructions, which when run on a computer, causes the computer to execute the methods described in the foregoing aspects.
  • the present application also provides a system, which includes the network device in the first aspect described above, the terminal device in the second aspect described above, and a relay device.
  • FIG. 1 is a schematic diagram of the architecture of a communication system to which an embodiment of the application is applicable;
  • Figure 2 is a schematic diagram of an uplink scheduling sequence in the prior art
  • Figure 3 is a schematic diagram of a downlink scheduling sequence in the prior art
  • 5A-5E are schematic diagrams of an uplink scheduling sequence provided by an embodiment of this application.
  • 6A-6E are schematic diagrams of an uplink scheduling sequence provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of an uplink scheduling sequence provided by an embodiment of this application.
  • 8A-8C are schematic diagrams of an uplink scheduling sequence provided by an embodiment of this application.
  • FIGS. 9A-9B are schematic diagrams of an uplink scheduling sequence provided by an embodiment of this application.
  • FIG. 10 is a schematic diagram of an uplink scheduling sequence provided by an embodiment of this application.
  • FIGS. 11A-11E are schematic diagrams of an uplink scheduling sequence provided by an embodiment of this application.
  • 12A-12B are schematic diagrams of uplink scheduling sequence provided by embodiments of this application.
  • FIG. 13 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 14 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 15 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 16 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 17 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 18 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 19 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 20 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 21 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 22 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 23 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 24 is a schematic diagram of a downlink scheduling sequence provided by an embodiment of this application.
  • FIG. 25 is a schematic diagram of the uplink and downlink scheduling process provided by an embodiment of the application.
  • FIG. 26 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 27 is a schematic structural diagram of another communication device according to an embodiment of this application.
  • FIG. 28 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 29 is a schematic diagram of another structure of another communication device according to an embodiment of the application.
  • FIG. 30 is a schematic block diagram of a communication device according to an embodiment of this application.
  • FIG. 31 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 32 is a schematic diagram of another structure of another communication device provided by an embodiment of this application.
  • FIG. 33 is a schematic structural diagram of another communication device according to an embodiment of the application.
  • Terminal devices include devices that provide users with voice and/or data connectivity. For example, they may include handheld devices with wireless connection functions or processing devices connected to wireless modems.
  • the terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) , Remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device) etc.
  • IoT Internet of things
  • it may include mobile phones (or “cellular” phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, and computer-built mobile devices.
  • PCS personal communication service
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.
  • RFID radio frequency identification
  • GPS global positioning system
  • laser scanners and other information sensing equipment.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • Use such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).
  • the terminal device may also include a relay. Or it can be understood that everything that can communicate with the base station can be regarded as a terminal device.
  • the terminal device is a UE as an example.
  • a network device is an entity used to transmit or receive signals on the network side, such as a generation NodeB (gNodeB).
  • the network device may be a device used to communicate with mobile devices.
  • the network equipment can be an AP in a wireless local area network (WLAN), a base transceiver in a global system for mobile communication (GSM) or a code division multiple access (CDMA).
  • WLAN wireless local area network
  • GSM global system for mobile communication
  • CDMA code division multiple access
  • BTS can also be a base station (NodeB, NB) in wideband code division multiple access (WCDMA), or an evolved base station (evolutional Node B, eNB, or eNodeB) in LTE,
  • the network equipment can also coordinate the attribute management of the air interface.
  • the embodiments of the present application are not limited.
  • the network device may be another device that provides wireless communication functions for the terminal device.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • a device that provides a wireless communication function for a terminal device is called a network device.
  • the network device is a DeNB as an example.
  • Relay Nodes, RN can be ordinary base stations (such as Node B or eNB), NR controller, gNB in 5G system, Centralized Unit, base station in future mobile communication system, new wireless base station, radio frequency Remote module, micro base station, Distributed Unit, access node in wireless fidelity (Wireless-Fidelity, WiFi) system, etc., reception point (transmission reception point, TRP) or transmission point (transmission point, TP) or bridge wireless unit (Bridge Radio Unit, BRU) Any other wireless access device, the embodiment of the present application is not limited to this. In the following description, it is assumed that the relay device is a BRU.
  • the frame structure needs to meet the following requirements:
  • PUSCH Physical Uplink Shared Channel
  • PHICH Physical Hybrid Automatic Retransmission Indication Channel
  • ACK Acknowledgement
  • NACK Nonacknowledgement
  • the content of the PUSCH includes at least the uplink data sent by the UE, and the content of the PHICH is the ACK/NACK feedback of the data in the PUSCH sent by the subframe n.
  • Uplink (UL) HARQ PUSCH retransmission period that is, when the UE transmits an uplink data block on subframe n for the first time, if the data block needs to be retransmitted, it can only be performed in subframe n+k*L, where k Is the retransmission period, L is the number of retransmissions, with values of 1, 2, 3,...Lmax, and Lmax is the maximum number of retransmissions configured by the system. In LTE FDD R8, k is equal to 8.
  • PHICH/uplink grant (UL grant) and PUSCH (n+4) that is, the UE receives and sends the UE’s PHICH/UL grant in subframe n, then the UE will follow the PHICH/UL grant instructions in subframe n+k Adjust the PUSCH, where k is the interval between the PHICH/UL grant indication and the UL data channel transmission.
  • k is equal to 4; this adjustment means that when the content in the PHICH is ACK, it is in the subframe n+ The PUSCH on 4 sends new data; when the content in the PHICH is NACK, the PUSCH on subframe n+4 retransmits the previously sent data; or according to UL grant instructions on the corresponding uplink resource of subframe n+4 send data.
  • PDSCH Physical Downlink Shared Channel
  • UL ACK/NACK that is, the UE receives the PDSCH sent to the UE in the subframe n, and feeds back the UL ACK/NACK in the subframe n+k, where k is the downlink data
  • the ACK/NACK feedback interval of LTE FDD R8, k is equal to 4.
  • a HARQ process refers to the base station scheduling data transmission once, and then sending ACK/NACK feedback to the terminal equipment.
  • RTT the number of HARQ processes is related to the RTT, which is related to the processing time of the terminal device or base station. The larger the RTT, the more parallel HARQ processes need to be supported to fill the RTT, and the number of HARQ processes is approximately equal to the RTT.
  • uplink data and downlink data can be sent in each subframe, and the uplink data and downlink data are separated by frequency.
  • the base station (or terminal device) can send the HARQ process in the n+4th subframe.
  • the base station (or terminal device) can continue to send the next data frame in the n+8th subframe through the HARQ process, that is, the HARQ RTT time is 8ms.
  • the uplink access link L2 and the uplink backhaul relay link L3 work in the same frequency band.
  • the BRU when receiving When the data comes from the UE, it may also send data to the base station, which will cause transceiver interference to the BRU. In order to avoid BRU transmission and reception interference, it is currently stipulated that the BRU and UE can share uplink air interface resources in a time division manner.
  • FIG. 2 For uplink scheduling, as shown in Figure 2, it is a schematic diagram of the current uplink scheduling timing structure, that is, according to the minimum transmission delay, the BRU and the UE alternately use uplink air interface resources.
  • the flow of the base station scheduling UE and BRU according to the time sequence shown in FIG. 2 includes the following steps:
  • the base station allocates an uplink grant for the BRU on subframe n-7, which is used for the BRU to transmit current uplink data or for the BRU to transmit uplink data after the current moment;
  • the UE sends an uplink scheduling request to the relay device in subframe n-6;
  • the BRU receives the uplink scheduling request from the UE and sends the PUSCH to the base station in subframe n-3, which carries the uplink scheduling request sent by the UE; since subframe n-5 is immediately followed by subframe n-6, if The processing time of the BRU is relatively long, and the demodulation result of the uplink scheduling request may not be obtained within one subframe. In order to give the BRU a longer processing time, the BRU can be used in the subframes after subframe n-5. Send PUSCH to the base station. The most recent subframe is subframe n-4, but subframe n-4 is available for the UE. Therefore, the BRU sends PUSCH in subframe n-3 to minimize the transmission delay;
  • the base station allocates an uplink grant to the UE, where the base station can allocate an uplink grant to the UE in a subframe after subframe n-3. But in subframe n-2, the base station may not finish demodulating the PUSCH from the BRU, so the base station allocates uplink grants to the UE on subframe n;
  • the base station sends the uplink scheduling management frame information for scheduling the UE to the BRU in the nearest subframe n+1 to instruct the BRU to demodulate the PUSCH of the UE;
  • the base station allocates an uplink grant to the BRU in subframe n+3 for the BRU to transmit the PUSCH sent by the UE;
  • the UE sends the PUSCH corresponding to step 24) on subframe n+4;
  • the BRU sends the PUSCH corresponding to step 26) to the base station on subframe n+7.
  • the PUSCH carries the demodulation result of the PUSCH sent by the UE in step 27).
  • the demodulation result may include, for example, a cyclic redundancy check ( Cyclic Redundancy Check, CRC), uplink control information UCI results, and TB data block content, etc.; similar to step 23), where the BRU sends PUSCH to the base station in subframe n+7, so that the BRU can send PUSCH before sending PUSCH. More time demodulate the PUSCH in step 27).
  • step 24 the UE fails to transmit PUSCH and needs to retransmit PUSCH; or, as long as step 26) Or step 28) fails, and the BRU does not buffer the demodulation and decoding result of the PUSCH transmitted by the UE this time. It can also be considered that the UE has failed to transmit the PUSCH, and the PUSCH needs to be retransmitted.
  • the base station sends HARQ feedback to the UE to instruct the UE to retransmit the PUSCH.
  • FDD uplink synchronization HARQ RTT is fixed at 8 subframes, that is, the time interval from the UE sending the PUSCH initial transmission authorization to the base station sending HARQ feedback to the UE is 8 subframes. Then the base station needs to send HARQ feedback to the UE in subframe n+8.
  • the base station allocates uplink authorization to the UE on subframe n, and then the base station To complete the reception, demodulation and decoding of the PUSCH sent by the BRU in subframe n+7, and HARQ scheduling on subframe n+8, a total of at least 9 complete subframes, that is, subframe n to subframe n+8, are required.
  • the BRU or the base station cannot complete the demodulation and decoding of the PUSCH within 1ms, that is, the BRU forwards the PUSCH sent by the UE to the base station on subframe n+7, and the base station cannot obtain the BRU sent to the UE on subframe n+8.
  • PUSCH demodulation result if it is implemented according to the current protocol timing, that is, the base station forcibly schedules HARQ on subframe n+8. If the HARQ instructs the UE to transmit on the HARQ channel, the retransmitted HARQ combined gain is lost; if The HARQ instructs the UE to retransmit in the HARQ. If the initial transmission is correct, the HARQ retransmission is unnecessary, and resources are wasted. Or, the base station instructs the UE to suspend HARQ in subframe n+8, which expands HARQ RTT and causes longer transmission delay.
  • FIG. 3 it is a schematic diagram of the current downlink scheduling sequence, that is, according to the minimum transmission delay, the BRU and the UE alternately use uplink air interface resources.
  • the flow of the base station scheduling UE and BRU according to the time sequence shown in FIG. 3 includes the following steps:
  • the base station schedules a Physical Downlink Control Channel (PDCCH) or PDSCH for the UE on subframe n-8;
  • PDCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Control Channel
  • the base station sends the downlink scheduling management frame information for scheduling the UE to the BRU in subframe n-7, and instructs the BRU to demodulate the PUCCH of the UE;
  • the base station allocates an uplink grant to the BRU in subframe n-5 for the BRU to transmit the PUCCH sent by the UE;
  • the UE sends the downlink ACK feedback corresponding to step 31) in subframe n-5;
  • the BRU sends the PUSCH corresponding to step 33), and the PUSCH carries the demodulation result of the PUCCH sent by the UE in step 34).
  • the interval between the downlink scheduling subframe and the downlink ACK feedback is fixed to 4 subframes, for example, the downlink scheduling subframe in step 31) is subframe n- 8.
  • the subframe where the downlink ACK feedback is located is subframe n-4, so that the UE cannot be scheduled in every downlink subframe. As shown in Figure 3, how much is the UE in a scheduling period (10 subframes)? One downlink subframe is unavailable, which wastes air interface resources.
  • the base station needs to continuously schedule the BRU to transmit the uplink PUSCH, which increases the uplink air interface overhead; otherwise, the BRU needs to buffer the UE’s downlink ACK feedback to feed back the UE’s continuous feedback at one time Multiple downlink ACK feedback.
  • the base station in order to be compatible with the transmission mechanism specified in the current protocol, and to ensure that the base station has enough time to obtain the demodulation result of the PUSCH from the UE before scheduling the uplink HARQ for the UE forwarded by the relay device; and When the base station performs downlink scheduling on the UE and the BRU, the utilization rate of the uplink air interface resources is improved.
  • the embodiment of the present application provides a communication method based on the relay communication system shown in FIG. 1.
  • the base station can indicate the subframes for uplink transmission between the UE and the BRU through configuration information, that is, the configuration information restricts HARQ timing, thereby meeting various constraints of the LTE FDD system.
  • the application of the technical solutions provided by the present application to the network architecture shown in FIG. 1 is taken as an example.
  • the method can be executed by three communication devices, for example, the first communication device, the second communication device, and the third communication device.
  • the first communication device may be a network device or a communication device capable of supporting the network device to realize the functions required by the method, or the first communication device may be a terminal device or a communication device capable of supporting the terminal device to realize the functions required by the method Or, the first communication device may be a relay device or a communication device capable of supporting the relay device to implement the functions required by the method, and of course, it may also be other communication devices, such as a chip system.
  • the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or the second communication device may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, or The second communication device may be a relay device or a communication device capable of supporting the functions required by the relay device to implement the method, and of course, it may also be another communication device, such as a chip system.
  • the third communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or the third communication device may be a terminal device or a communication device capable of supporting the terminal equipment to implement the functions required by the method, or The third communication device may be a relay device or a communication device capable of supporting the functions required by the relay device to implement the method, and of course, it may also be another communication device, such as a chip system.
  • the first communication device may be a network device
  • the second communication device is a terminal device
  • the third communication device is a relay device.
  • the first communication device is a network device
  • the second communication device is a communication device that can support the terminal device to implement the functions required by the method
  • the third communication device is a relay device
  • the first communication device is a network device that can support
  • the second communication device is a communication device capable of supporting the terminal device to realize the functions required by the method
  • the third communication device is a communication device capable of supporting the relay device to realize the functions required by the method and many more.
  • the network equipment is, for example, a base station.
  • the method is executed by the network device and the terminal device as an example, that is, the first communication device is the network device and the second communication device is the terminal device as an example.
  • the network equipment described below may be the network equipment (DeNB) in the network architecture shown in FIG. 1
  • the terminal equipment described below may be The terminal equipment (UE) in the network architecture shown in 1
  • the relay device described below may be the relay equipment (BRU) in the network architecture shown in FIG.
  • FIG. 4 is a communication method provided by an embodiment of this application. The flow of the method is described as follows.
  • the DeNB sends configuration information to the UE, so that the UE receives the configuration information, where the configuration information is used to instruct the UE to send the uplink subframe of the first uplink channel to the BRU, and the BRU to send the uplink subframe of the second uplink channel to the DeNB. frame.
  • the DeNB schedules the UE to send the first uplink channel to the BRU in subframe n1 according to the configuration information, and schedules the BRU to send the second uplink channel to the DeNB in subframe n1+k1.
  • the UE performs uplink transmission according to the configuration information.
  • the DeNB before performing uplink and downlink scheduling on the UE and BRU, can determine the uplink air interface resources and downlink air interface resources available to the UE and the BRU, so that during the uplink scheduling process, the DeNB sends the HARQ feedback to the UE.
  • the interval between the subframe and the subframe where the BRU sends the second uplink channel to the DeNB is at least 1 subframe to ensure that the DeNB has enough time to correctly receive and decode the second uplink channel before sending the HARQ feedback.
  • the DeNB can determine the configuration information, which can be used To instruct the UE to send the uplink subframe of the first uplink channel to the BRU, and the BRU to send the uplink subframe of the second uplink channel to the DeNB, for example, the UE sends the first uplink channel to the BRU in subframe n1, and the BRU in subframe n1 +k1 sends the second uplink channel to the DeNB.
  • n1 is a positive integer.
  • k1 can be equal to or greater than 1, so as to ensure that the UE and the BRU use co-frequency resources in time sharing, thereby avoiding BRU transmission and reception interference.
  • the DeNB After determining the configuration information, the DeNB sends the configuration information to the UE, so that the UE performs uplink transmission according to the configuration information.
  • the manner in which the DeNB sends configuration information to the UE includes but is not limited to the following three manners:
  • the configuration information can be carried in MSG4, and the DeNB sends the MSG4 to the UE to inform the UE.
  • the DeNB schedules the UE to send a random access channel (ran1dom access chan1n1el, RACH) to the BRU.
  • the RACH can carry a random sequence (Preamble), so that the BRU forwards the received Preamble to the DeNB.
  • the BRU sends a PUSCH to the DeNB.
  • PUSCH carries Preamble.
  • the DeNB determines that the uplink transmission channel of the UE is transmitted through the BRU according to the detection result of the Preamble, and the DeNB sends a random access response to the UE.
  • the UE receives the random access response from the DeNB, and the UE sends MSG2 and MSG3 to the BRU, so that the BRU sends the received MSG2 and MSG3 to the DeNB.
  • the configuration information is carried in the MSG4 message.
  • the DeNB sends MSG4 to the UE to instruct the UE.
  • the DeNB schedules the uplink and downlink subframes of the UE and BRU for uplink transmission. Alternatively, it can also be considered to indicate the UE.
  • the DeNB schedules the uplink and downlink subframes of the UE and BRU. Frame scheduling timing relationship.
  • the configuration information can be carried in a radio resource control (Radio Resource Control, RRC) connection reconfiguration message, and the DeNB sends the RRC connection reconfiguration message to the UE.
  • RRC Radio Resource Control
  • the configuration information may be carried in the RRC connection reconfiguration message.
  • the UE can perform uplink and downlink scheduling according to the uplink and downlink subframe scheduling timing relationship indicated by the configuration information.
  • the configuration information can be carried in a system message, and the DeNB sends the system message to the UE to inform the UE.
  • the configuration information may be carried in system messages, for example, in system information block (SIB System Information Block, SIB) 1, or other possible system messages.
  • SIB System Information Block
  • the UE sends the first uplink channel to the BRU in subframe n1, for example, PUCCH, PUSCH, or Physical Random Access Channel (PRACH), etc.
  • the BRU sends the second uplink channel to the DeNB in the subframe n1+k1, where the second uplink channel includes the demodulation result of the first uplink channel.
  • the DeNB receives and demodulates the second uplink channel.
  • the DeNB may also send HARQ feedback to the UE to instruct the UE to retransmit or newly transmit the first uplink channel. For example, the DeNB sends HARQ feedback to the UE in subframe n1+K.
  • the difference between K and k1 is greater than or equal to 2, that is, there is at least one interval between the subframe where the DeNB sends HARQ feedback and the subframe where the BRU sends the second uplink channel to the DeNB. Subframes.
  • the embodiment of the present application can determine the uplink and downlink scheduling time sequence to determine the configuration information indicating the uplink and downlink scheduling time sequence.
  • the configuration information may include the ratio of TDM uplink and downlink subframes, and may also include the ratio of TDD uplink and downlink subframes. That is, in this embodiment of the application, the DeNB informs the UE of the ratio of TDM uplink and downlink subframes. Or TDD uplink and downlink subframe ratio to inform the UE of the uplink and downlink scheduling timing.
  • the configuration information may include TDM uplink and downlink subframe ratio 0, TDM uplink and downlink subframe ratio 1, TDM uplink and downlink subframe ratio 2, TDM uplink and downlink subframe ratio 3, TDM uplink and downlink subframe ratio Ratio 4. TDM uplink and downlink subframe ratio 5 or TDM uplink and downlink subframe ratio 6; alternatively, the configuration information may include TDD uplink and downlink subframe ratio 0, TDD uplink and downlink subframe ratio 1, TDD uplink and downlink subframe ratio Ratio 2, TDD uplink and downlink subframe ratio 3, TDD uplink and downlink subframe ratio 4, TDD uplink and downlink subframe ratio 5, or TDD uplink and downlink subframe ratio 6.
  • Different TDM uplink and downlink subframe ratios or different TDD uplink subframe ratios have different corresponding uplink and downlink scheduling timings.
  • the following are the two processes of uplink scheduling and downlink scheduling.
  • the first uplink channel is PUSCH and the second uplink channel is also PUSCH.
  • the UE and BRU still use the FDD mode to occupy uplink air interface resources for uplink transmission.
  • the embodiment of the application may determine that the DeNB schedules the UE to send the PUSCH to the BRU on the subframe n1, and the DeNB schedules the BRU to perform the relay link transmission to the DeNB on the subframe n1+k1.
  • the DeNB can schedule the UE to send a downlink response ACK feedback to the BRU on subframe n2 according to the configuration information, and schedule the BRU to send the second ACK feedback to the DeNB on subframe n2+k2.
  • Three upstream channels For example, the DeNB schedules a downlink PDCCH or PDSCH for the UE in subframe n2, and the BRU sends a PUSCH to the DeNB in subframe n2+k2, and the PUSCH carries the demodulation result of the PDCCH or PDSCH.
  • n1 and n2 are only for distinguishing between uplink scheduling and downlink scheduling, and do not have a referential meaning.
  • n1 and n2 are collectively referred to as n
  • k1 and k2 are collectively referred to as k.
  • the uplink and downlink scheduling timing may include the following situations:
  • the value of k may be different under different TDM uplink and downlink subframe ratios, including the following situations:
  • n 1 represents the first uplink subframe, and so on, n is 2 represents the second uplink subframe, n is 3 represents the third uplink subframe, and n is 4 represents the fourth uplink subframe.
  • the first available subframe is called the first uplink subframe
  • the second available subframe is called the second uplink subframe. and many more.
  • the first frame includes subframe 0 to subframe 9, where subframe 2 is the first uplink subframe, Subframe 3 is the second uplink subframe, subframe 4 is the third uplink subframe, subframe 7 is the fourth uplink subframe, subframe 8 is the fifth uplink subframe, and subframe 9 is the sixth
  • the HARQ offset is 2
  • one frame includes subframe 2 to subframe 11, that is, includes subframe 2 to subframe 9 of the first frame, and the next frame (the first frame) Two frames) subframe 0 and subframe 1.
  • subframe 4 is the first uplink subframe
  • subframe 5 is the second uplink subframe
  • subframe 6 is the third uplink subframe
  • subframe 9 is the fourth uplink subframe
  • subframe 9 is the fourth uplink subframe.
  • Subframe 0 in the frame is the fifth uplink subframe
  • subframe 1 in the second frame is the sixth uplink subframe.
  • the HARQ offset is 0 as an example.
  • the value of k corresponding to the first uplink subframe and the fourth uplink subframe is 3 or 4
  • the value of k corresponding to each uplink subframe is 2 or 3
  • the value of k corresponding to the third uplink subframe and the sixth uplink subframe is 2.
  • FIG. 5A is a schematic diagram of a TDM uplink scheduling sequence.
  • line 1 and line 6 indicate that the DeNB allocates uplink scheduling to the UE
  • line 2 indicates that the DeNB sends the UE's uplink scheduling management frame information to the BRU
  • line 3 indicates that the DeNB allocates the BRU to the BRU.
  • lines 4 and 8 indicate that the UE sends PUSCH to the BRU
  • lines 5 and 9 indicate that the BRU sends a PUSCH to the DeNB
  • line 7 indicates that the DeNB sends HARQ feedback to the UE.
  • subframe n is the first subframe in a frame
  • n+9 is the last subframe in this frame.
  • the following description takes the timing of two frames as an example, where subframe n to subframe n+9 are one frame, and subframe n+10 to subframe n+19 are the next frame.
  • the number of n can be 0. In the following, the number of n is 0 as an example, that is, starting from subframe 0.
  • the DeNB allocates an uplink grant to the UE on subframe n, and the DeNB can send the current uplink scheduling management frame information of the UE to the BRU on subframe n to instruct the BRU to demodulate the PUSCH of the UE.
  • the DeNB can allocate an uplink grant to the BRU in subframe n+2 or subframe n+3 for the BRU to transmit the PUSCH sent by the UE.
  • Figure 5A takes the DeNB as an example to allocate uplink grants to the BRU on subframe n+3.
  • the BRU sends the PUSCH to the DeNB within 4 subframes of the uplink grant interval.
  • the DeNB may send HARQ feedback to the UE in subframe n+10 according to the provisions of the TDM uplink and downlink scheduling timing to instruct the UE to resend the PUSCH.
  • the UE can send the PUSCH to the BRU in subframe n+4, subframe n+5, or subframe n+6.
  • Subframe n+4 is the first uplink subframe of the UE, and so on, subframe n+5 is the second uplink subframe of the UE, and subframe n+6 is the third uplink subframe of the UE.
  • the UE may send the PUSCH in the first uplink subframe, that is, the UE sends the PUSCH on subframe n+4, the BRU sends the PUSCH to the DeNB on subframe n+7, and the DeNB sends the PUSCH to the UE on subframe n+10.
  • Send HARQ feedback that is, there are 2 subframes between subframe n+10 and subframe n+7, so it can ensure that the DeNB has enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback to get the UE to send PUSCH CRC result and complete uplink scheduling.
  • the difference between k equal to (n+7) and (n+4) is 3, that is, the value of k corresponding to the first uplink subframe is 3.
  • the BRU can also send the PUSCH to the DeNB on subframe n+8, as shown in Figure 5B.
  • the difference between FIG. 5B and FIG. 5A is that the DeNB allocates an uplink grant to the BRU in subframe n+2 to follow the TDM uplink and downlink scheduling timing.
  • k is equal to the difference between (n+8) and (n+4), which is 4, that is, the value of k corresponding to the first uplink subframe is 4. Therefore, the value of k corresponding to the first uplink subframe is 3 or 4.
  • the time interval between the subframe where the DeNB sends HARQ feedback and the subframe where the DeNB receives the PUSCH sent by the BRU is at least 2 subframes, that is, more time is reserved.
  • the embodiment of this application This allows the DeNB to have enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback to obtain the CRC result of the PUSCH sent by the UE and complete the uplink scheduling, thereby avoiding the loss of the HARQ combined gain of the retransmission, and at the same time, it also reduces The possibility that the DeNB suspends HARQ in subframe n+8 reduces HARQ RTT and reduces transmission delay.
  • the DeNB may also allocate an uplink grant to the UE in subframe n+10 to indicate the new transmission or retransmission of the HARQ.
  • the UE performs a new transmission or adaptive retransmission or non-adaptive retransmission on the HARQ in subframe n+14.
  • subframe n+14 can be considered as the fourth uplink subframe of the UE.
  • the scheduling process is the same as the scheduling process from subframe n+4 to subframe n+10.
  • the BRU can send PUSCH to the DeNB in subframe n+16, subframe n+17, or subframe n+18, so,
  • the value of k corresponding to the fourth uplink subframe is also 3 or 4, which will not be repeated here.
  • the UE may send the PUSCH in the second uplink subframe, that is, the UE sends the PUSCH in the subframe n+4.
  • the BRU may send the PUSCH in subframe n+6, and correspondingly, the DeNB sends uplink allocation to the BRU in subframe n+2.
  • k is equal to the difference between (n+6) and (n+4), which is 2, that is, the value of k corresponding to the second uplink subframe is 2.
  • the DeNB can also allocate uplink authorization for the UE in subframe n+10, and the UE sends PUSCH in subframe n+14 (the fifth uplink subframe), that is The value of k corresponding to the fifth uplink subframe is also 2.
  • the BRU sends PUSHC in subframe n+7, as shown in Figure 5D.
  • the DeNB sends an uplink allocation to the BRU in subframe n+3.
  • the difference between k equal to (n+7) and (n+4) is 3, that is, the value of k corresponding to the second uplink subframe can also be 3.
  • the value of k corresponding to the fifth uplink subframe is also 3.
  • the UE sends the PUSCH in the third uplink subframe, that is, the UE sends the PUSCH in subframe n+4.
  • the BRU may send the PUSCH in subframe n+6, and correspondingly, the DeNB sends uplink allocation to the BRU in subframe n+2.
  • the difference between k equal to (n+6) and (n+4) is 2, that is, the value of k corresponding to the third uplink subframe is 2.
  • the DeNB can also allocate uplink grants to the UE in subframe n+10, and the UE in subframe n+14 (the sixth uplink subframe ) Send PUSCH, that is, k corresponding to the sixth uplink subframe is equal to 2.
  • TDM uplink and downlink subframe ratio 1 when n is 1 or 4, k is 2, 3 or 4; when n is 2 or 5, k is 2 or 3, that is, the first uplink subframe and The value of k corresponding to the fourth uplink subframe is 2, 3, or 4, and the value of k corresponding to the second uplink subframe and the fifth uplink subframe is 2 or 3.
  • FIG. 6A is a schematic diagram of a TDM uplink scheduling sequence.
  • the difference from FIG. 5A is that the TDM uplink and downlink subframe ratio shown in FIG. 6A is different from the TDM uplink and downlink subframe ratio shown in FIG. 5A.
  • the DeNB when the DeNB allocates uplink scheduling to the UE in subframe n, according to the TDM uplink and downlink scheduling timing, it can be known that the DeNB sends HARQ feedback to the UE in subframe n+10.
  • the BRU can be used in subframes n+6, n+7 or n+ 8 sends PUSCH to DeNB.
  • Fig. 6A takes as an example that the BRU can send the PUSCH to the DeNB in subframe n+6.
  • the DeNB allocates an uplink grant to the BRU in subframe n+2 to follow the TDM uplink and downlink scheduling timing.
  • the UE may send the PUSCH to the BRU on subframe n+4.
  • the difference between k equal to (n+6) and (n+4) is 2, that is, the value of k corresponding to the first uplink subframe is 2.
  • the BRU sends PUSCH to the DeNB in subframe n+7, and the DeNB allocates uplink authorization to the BRU in subframe n+3.
  • k is equal to the difference between (n+7) and (n+4). It is 3, that is, the value of k corresponding to the first uplink subframe can be 3.
  • the BRU sends PUSCH to the DeNB in subframe n+8, and the DeNB allocates an uplink grant to the BRU in subframe n+4.
  • k is equal to the difference between (n+8) and (n+4) That is 4, that is, the value of k corresponding to the first uplink subframe can be 4.
  • the DeNB may also allocate an uplink grant to the UE in the subframe n+10 to indicate the new transmission or retransmission of the HARQ. After that, the UE performs a new transmission or adaptive retransmission or non-adaptive retransmission on the HARQ in subframe n+14.
  • the subframe n+14 corresponds to the fourth uplink subframe of the UE.
  • the scheduling process is the same as the scheduling process from subframe n+4 to subframe n+10.
  • the BRU can send PUSCH to the DeNB in subframe n+16, subframe n+17, or subframe n+18, and the subsequent process No longer.
  • the UE sends the PUSCH in the second uplink subframe, that is, the UE sends the PUSCH in subframe n+4, the DeNB allocates uplink grants to the BRU in subframe n+2, and the BRU in subframe n +6 sends PUSHC, DeNB sends HARQ feedback to UE on subframe n+10, at this time, k is equal to the difference between (n+6) and (n+4), which is 2, that is, the second uplink subframe corresponds to k The value is 2.
  • the DeNB can also allocate uplink grants to the UE in subframe n+10, and it can be deduced that the value of k corresponding to the fifth uplink subframe is also 2.
  • the UE sends the PUSCH in the second uplink subframe, that is, the UE sends the PUSCH in subframe n+4, the DeNB allocates uplink grants to the BRU in subframe n+3, and the BRU in subframe n+ 7 Send PUSHC, DeNB sends HARQ feedback to UE on subframe n+10.
  • k is equal to the difference between (n+7) and (n+4), which is 3, that is, the second uplink subframe corresponds to k The value is 3.
  • the DeNB can also allocate uplink grants to the UE in subframe n+10, and it can be deduced that the value of k corresponding to the fifth uplink subframe is also 3.
  • the time interval between the DeNB sending HARQ feedback and the DeNB receiving the PUSCH sent by the BRU is at least 1 subframe, that is, more time is reserved for the DeNB to demodulate the PUSCH sent by the BRU This allows the DeNB to have enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback to obtain the CRC result of the PUSCH sent by the UE and complete the uplink scheduling.
  • TDM uplink and downlink subframe ratio 2 when n is 1 or 4, k is 2, 3 or 4, that is, the value of k corresponding to the first uplink subframe and the fourth uplink subframe is 2 , 3, or 4.
  • FIG. 7 is a schematic diagram of a TDM uplink scheduling sequence.
  • the DeNB allocates an uplink grant for the UE in subframe n, and the DeNB sends HARQ feedback to the UE in subframe n+10. If the UE sends PUSCH in the first uplink subframe, that is, the UE sends PUSCH on subframe n+4, the BRU can send PUSCH to DeNB on subframe n+6 (as shown by the thin solid line 5 in Figure 7), then Correspondingly, the DeNB allocates an uplink grant to the BRU in subframe n+2 (as shown by the thin solid line 3 in FIG. 7), and k is the difference between (n+6) and (n+4), that is, 2.
  • the BRU can send the PUSCH to the DeNB in subframe n+7 (as shown by the thick solid line 5 in Figure 7), then correspondingly, the DeNB allocates uplink grants for the BRU in subframe n+3 (as shown in the thick solid line in Figure 7).
  • k is the difference between (n+7) and (n+4), namely 3;
  • the BRU can send the PUSCH to the DeNB in subframe n+8 (as shown by the thin dashed line 5 in Figure 7), then correspondingly, the DeNB allocates an uplink grant for the BRU in subframe n+4 (as shown in the thin dashed line 3 in Figure 7).
  • k is the difference between (n+8) and (n+4), that is, 4.
  • the DeNB can allocate the uplink grant to the UE in the subframe n+10 to indicate the new transmission or retransmission of the HARQ. After that, the UE performs a new transmission or adaptive retransmission or non-adaptive retransmission on the HARQ in subframe n+14.
  • the subframe n+14 corresponds to the fourth uplink subframe of the UE.
  • the scheduling process is the same as the scheduling process from subframe n+4 to subframe n+10.
  • the BRU can send PUSCH to the DeNB in subframe n+16, subframe n+17, or subframe n+18, and the subsequent process No longer.
  • the time interval between the HARQ feedback sent by the DeNB and the PUSCH sent by the BRU received by the DeNB is at least 1 subframe. That is, more time is reserved for the DeNB to demodulate the PUSCH sent by the BRU. Before sending the HARQ feedback, there is enough time to complete the demodulation and decoding of the relay PUSCH to obtain the CRC result of the PUSCH sent by the UE and complete the uplink scheduling.
  • TDM uplink and downlink subframe ratio 3 when n is 1, k is 3 or 4; when n is 2 or 3, k is 2, 3 or 4, that is, the first uplink subframe corresponds to k 3 or 4, the corresponding k of the second uplink subframe and the third uplink subframe is 2, 3, or 4:
  • FIG. 8A is a schematic diagram of a TDM uplink scheduling sequence.
  • the DeNB allocates an uplink grant for the UE in subframe n, and the DeNB sends HARQ feedback to the UE in subframe n+10.
  • the BRU can send the PUSCH to the DeNB on subframe n+7 (as shown by the thin solid line 5 in Figure 8A), then Correspondingly, the DeNB allocates an uplink grant to the BRU in subframe n+3 (as shown by the thin solid line 3 in FIG. 8A), and k is the difference between (n+7) and (n+4), that is, 3.
  • the BRU sends the PUSCH to the DeNB in subframe n+8, (as shown by the thick solid line 5 in Figure 8A), then correspondingly, the DeNB allocates uplink grants to the BRU in subframe n+4 (as shown in Figure 8A with the thick solid line 3), at this time k is the difference between (n+8) and (n+4), namely 4. Therefore, the value of k corresponding to the first uplink subframe is 3 or 4.
  • the UE sends PUSCH in the second uplink subframe, that is, the UE sends PUSCH on subframe n+5, and the BRU sends PUSCH to DeNB on subframe n+7 (as shown in Figure 8B).
  • the DeNB allocates an uplink grant for the BRU in subframe n+3 (shown by the thin solid line 3 in Figure 8B), and k is (n+7) and (n+5) The difference is 2.
  • the DeNB allocates an uplink grant for the BRU in subframe n+5 (as shown by the thin dashed line 3 in Figure 8B).
  • k is the difference between (n+9) and (n+5), namely 4. That is, the value of k corresponding to the second uplink subframe is 2, 3, or 4.
  • the UE sends PUSCH in the third uplink subframe, that is, the UE sends PUSCH on subframe n+6, and the BRU sends PUSCH to DeNB on subframe n+8 (as shown in Figure 8C).
  • the DeNB allocates an uplink grant for the BRU in subframe n+4 (shown by the thin solid line 3 in Figure 8C), and k is (n+8) and (n+6) The difference is 2.
  • the DeNB allocates an uplink grant for the BRU in subframe n+6 (as shown in the thin dashed line 3 in Figure 8C).
  • k is the difference between (n+10) and (n+6), namely 4. That is, the value of k corresponding to the third uplink subframe is 2, 3, or 4.
  • the time interval between the DeNB sending HARQ feedback and the DeNB receiving the PUSCH sent by the BRU is at least 1 subframe, that is, more time is reserved for the DeNB to demodulate the PUSCH sent by the BRU. This allows the DeNB to have enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback to obtain the CRC result of the PUSCH sent by the UE and complete the uplink scheduling.
  • FIG. 9A is a schematic diagram of a TDM uplink scheduling sequence.
  • the DeNB allocates an uplink grant for the UE in subframe n, and the DeNB sends HARQ feedback to the UE in subframe n+10. If the UE sends the PUSCH in the first uplink subframe, that is, the UE sends the PUSCH on subframe n+4, the BRU can send the PUSCH to the DeNB on subframe n+6 (as shown by the thin solid line 5 in Figure 9A), then Correspondingly, the DeNB allocates an uplink grant to the BRU in subframe n+2 (as shown by the thin solid line 3 in FIG. 9A), and k is the difference between (n+6) and (n+4), that is, 2.
  • the DeNB allocates an uplink grant to the BRU in subframe n+3 (as shown in Figure 9A with the thick solid line 3), at this time k is the difference between (n+7) and (n+4), namely 3.
  • the DeNB allocates an uplink grant for the BRU in subframe n+4 (as shown by the thin dashed line 3 in Figure 9A).
  • k is the difference between (n+8) and (n+4), namely 4. That is, the value of k corresponding to the first uplink subframe is 2, 3, or 4.
  • the BRU can send the PUSCH to the DeNB on subframe n+7 (as shown by the thin solid line 5 in Figure 9B) ), then correspondingly, the DeNB allocates an uplink grant to the BRU in subframe n+3 (as shown by the thin solid line 3 in Figure 9B), and k is the difference between (n+7) and (n+5), that is 2.
  • the DeNB allocates uplink grants to the BRU in subframe n+4 (as shown in Figure 9B thick solid line 3), at this time k is the difference between (n+8) and (n+5), namely 3.
  • the DeNB allocates an uplink grant for the BRU in subframe n+5 (as shown by the thin dashed line 3 in Figure 9B).
  • k is the difference between (n+9) and (n+5), namely 4. That is, the value of k corresponding to the second uplink subframe is 2, 3, or 4.
  • the time interval between the DeNB sending HARQ feedback and the DeNB receiving the PUSCH sent by the BRU is at least 1 subframe, that is, more time is reserved for the DeNB to demodulate the PUSCH sent by the BRU. This allows the DeNB to have enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback to obtain the CRC result of the PUSCH sent by the UE and complete the uplink scheduling.
  • FIG. 10 is a schematic diagram of a TDM uplink scheduling sequence.
  • the DeNB allocates an uplink grant for the UE in subframe n, and the DeNB sends HARQ feedback to the UE in subframe n+10. If the UE sends the PUSCH in the first uplink subframe, that is, the UE sends the PUSCH on subframe n+4, the BRU can send the PUSCH to the DeNB on subframe n+6 (as shown by the thin solid line 5 in Figure 10), then Correspondingly, the DeNB allocates an uplink grant to the BRU in subframe n+2 (as shown by the thin solid line 3 in FIG. 10), and k is the difference between (n+6) and (n+4), that is, 2.
  • the BRU can send the PUSCH to the DeNB in subframe n+7 (as shown by the thick solid line 5 in Figure 10), then correspondingly, the DeNB allocates uplink grants for the BRU in subframe n+3 (as shown in the thick solid line in Figure 10).
  • k is the difference between (n+7) and (n+4), namely 3.
  • the BRU can send the PUSCH to the DeNB in subframe n+8 (as shown by the thin dashed line 5 in Figure 10), and correspondingly, the DeNB allocates the uplink grant for the BRU in subframe n+4 (as shown by the thin dashed line 3 in Figure 10).
  • k is the difference between (n+8) and (n+4), namely 4. That is, the value of k corresponding to the first uplink subframe is 2, 3, or 4.
  • the time interval between the HARQ feedback sent by the DeNB and the PUSCH sent by the BRU received by the DeNB is at least 1 subframe. That is, more time is reserved for the DeNB to demodulate the PUSCH sent by the BRU. Before sending the HARQ feedback, there is enough time to complete the demodulation and decoding of the relay PUSCH to obtain the CRC result of the PUSCH sent by the UE and complete the uplink scheduling.
  • n 1, k is 3 or 4; when n is 2 or 5, k is 2 or 3; when n is 3, k is 2; n is 4
  • k 2, 3 or 4
  • the first uplink subframe corresponds to k is 3 or 4
  • the second uplink subframe and the fifth uplink subframe correspond to k is 2 or 3
  • the third uplink subframe corresponds to Corresponding to k is 2, and corresponding to k of the fourth uplink subframe is 2, 3, or 4.
  • FIG. 11A is a schematic diagram of a TDM uplink scheduling sequence.
  • the DeNB allocates an uplink grant for the UE in subframe n, and the DeNB sends HARQ feedback to the UE in subframe n+10. If the UE sends PUSCH in the first uplink subframe, that is, the UE sends PUSCH on subframe n+4, BRU can send PUSCH to DeNB on subframe n+7 (as shown by the thin solid line 5 in Figure 11A), then Correspondingly, the DeNB allocates an uplink grant to the BRU in subframe n+3 (as shown by the thin solid line 3 in FIG. 11A). At this time, k is the difference between (n+7) and (n+4), that is, 3.
  • the BRU can send the PUSCH to the DeNB in subframe n+8, (as shown by the thick solid line 5 in Figure 11A), then correspondingly, the DeNB allocates uplink grants to the BRU in subframe n+4 (as shown in Figure 11A thick solid line).
  • Line 3 at this time k is the difference between (n+8) and (n+4), namely 4. That is, the value of k corresponding to the first uplink subframe is 3 or 4.
  • the DeNB allocates uplink grants to the BRU in subframe n+2 (as shown by the thin solid line 3 in Figure 11B), and k is (n+6) and (n+4) The difference is 2.
  • the BRU can send PUSCH to the DeNB in subframe n+7, (as shown by the thick solid line 5 in Figure 11B), then correspondingly, the DeNB allocates uplink grants to the BRU in subframe n+3 (as shown in Figure 11B thick solid line).
  • Line 3), at this time k is the difference between (n+7) and (n+4), namely 3. That is, the value of k corresponding to the second uplink subframe is 2 or 3.
  • the UE sends PUSCH in the third uplink subframe, that is, the UE sends PUSCH on subframe n+4, and the BRU sends PUSCH to DeNB on subframe n+6, then the corresponding,
  • the DeNB allocates an uplink grant to the BRU in subframe n+2, and k is the difference between (n+6) and (n+4), that is, 2.
  • subframe n shown in FIG. 11D is the second uplink subframe of the UE
  • subframe n+1 is the third uplink subframe of the UE.
  • the BRU can send the PUSCH to the DeNB in subframe n+6, subframe n+7, or subframe n+8, and it can be deduced that k is equal to 2, 3, or 4. That is, the value of k corresponding to the fourth uplink subframe is 2, 3, or 4.
  • the UE sends the PUSCH in the fifth uplink subframe, that is, the UE sends the PUSCH in subframe n+4.
  • the subframe n shown in FIG. 11E is the third uplink subframe of the UE
  • the subframe n+1 is the fourth uplink subframe of the UE.
  • the BRU can send PUSCH to the DeNB in subframe n+6 or subframe n+7, and it can be derived that k is equal to 2 or 3. That is, the value of k corresponding to the fifth uplink subframe is 2 or 3.
  • the time interval between the DeNB sending HARQ feedback and the DeNB receiving the PUSCH sent by the BRU is at least 1 subframe, that is, more time is reserved for the DeNB to demodulate the PUSCH sent by the BRU. This allows the DeNB to have enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback to obtain the CRC result of the PUSCH sent by the UE and complete the uplink scheduling.
  • Table 1 takes HARQ offset of 0 and 1 as an example, where HARQ offset of 0 corresponds to subframe 2, subframe 3, and subframe 4, and HARQ offset of 0 corresponds to subframe 7, subframe 8, and subframe 9.
  • sa0 represents TDM uplink and downlink subframe ratio
  • sa1 represents TDM uplink and downlink subframe ratio
  • sa2 represents TDM uplink and downlink subframe ratio
  • sa3 represents TDM uplink and downlink subframe ratio
  • sa4 represents TDM uplink and downlink subframe ratio 4
  • sa5 represents TDM uplink and downlink subframe ratio 5
  • sa6 represents TDM uplink and downlink subframe ratio 6.
  • Subframe 2 represents the first uplink subframe of the UE
  • subframe 3 represents the second uplink subframe of the UE
  • subframe 4 represents the third uplink subframe of the UE
  • subframe 7 represents the fourth uplink subframe of the UE.
  • subframe 8 represents the fifth uplink subframe of the UE
  • subframe 9 represents the sixth uplink subframe of the UE; the rest of the subframes can be deduced by analogy.
  • 2/3 indicates that the value of k is 2 or 3
  • 3/4 indicates that the value of k is 3 or 4
  • 2/3/4 indicates that the value of k is 2 or 3 or 4.
  • the value of k may be different under different TDD uplink and downlink subframe ratios, including the following situations:
  • TDD uplink and downlink subframe ratio when n is 1 or 4, k is 2; when n is 2 or 5, k is 2 or 3, that is, the first uplink subframe and the fourth uplink The corresponding k of the subframe is 2, and the corresponding k of the second uplink subframe and the fifth uplink subframe is 2 or 3.
  • FIG. 12A is a schematic diagram of a TDD uplink scheduling sequence.
  • the UE sends the PUSCH in the first uplink subframe.
  • the DeNB allocates an uplink grant to the UE on the subframe n, and at the same time, the DeNB can send the current uplink scheduling management frame information of the UE to the BRU on the subframe n to instruct the BRU to demodulate the PUSCH of the UE.
  • the DeNB allocates an uplink grant to the BRU in subframe n+4 for the BRU to transmit the PUSCH sent by the UE.
  • the DeNB sends HARQ feedback to the UE in subframe n+10 to instruct the UE to resend the PUSCH.
  • the UE sends the PUSCH to the BRU after receiving the uplink authorization, and the available uplink subframes for the UE start from subframe n+6, that is, the first uplink subframe of the UE is subframe n+6, so the UE can be in subframe n +6 or send PUSCH on subframe n+7.
  • this embodiment of the application determines that the BRU sends the PUSCH on subframe n+8, that is, the first uplink subframe corresponds to the value of k.
  • the value is 2.
  • the DeNB can allocate the uplink grant to the UE in the subframe n+10 to indicate the new transmission or retransmission of the HARQ. After that, the UE performs a new transmission or adaptive retransmission or non-adaptive retransmission on the HARQ in subframe n+16.
  • subframe n+16 can be considered as the fourth uplink subframe of the UE. Therefore, in the same way, the value of k corresponding to the fourth uplink subframe is 2, which is not repeated here.
  • the UE transmits the PUSCH in the second uplink subframe.
  • the DeNB allocates an uplink grant to the BRU on subframe n+3 for the BRU to transmit the PUSCH sent by the UE.
  • the UE sends the PUSCH to the BRU on subframe n+4.
  • BUR can send PUSCH to DeNB on subframe n+6 (as shown by the thin solid line 5 in Figure 12B), that is, k is equal to 2, or BUR can send PUSCH to DeNB on subframe n+7 (as shown in Figure 12B
  • the middle thick solid line 5 that is, k equals 3.
  • the DeNB may send HARQ feedback to the UE in subframe n+10 to instruct the UE to resend the PUSCH.
  • the BRU sends the PUSCH to the DeNB in subframe n+6 or subframe n+7, there is at least 2 subframes between the DeNB sending HARQ feedback and the DeNB receiving the PUSCH from the BRU. Time can get the demodulation result of PUSCH. Therefore, the k corresponding to the second uplink subframe is 2 or 3. Similar to FIG. 12A, k corresponding to the fifth uplink subframe is also 2 or 3.
  • TDD uplink and downlink subframe ratio 2 when n is 1 or 4, k is 2, 3 or 4, that is, k is 2, 3 or corresponding to the first uplink subframe and the fourth uplink subframe 4.
  • the time sequence for the DeNB to schedule the UE and BRU for uplink transmission when the TDD uplink and downlink subframe ratio is 2 is the same as the time sequence for the DeNB to schedule the UE and BRU for uplink transmission when the TDM uplink and downlink subframe ratio is 2. I won't repeat it here.
  • k is 2, 3, or 4 for the first uplink subframe and the fourth uplink subframe.
  • the corresponding k of the first uplink subframe and the fourth uplink subframe is 2, 3, or 4, there is at least 1 subframe between the DeNB sending HARQ feedback and the DeNB receiving the PUSCH from the BRU, and there is enough time to obtain the PUSCH The demodulation result.
  • TDD uplink and downlink subframe ratio 3 when n is 1, k is 3 or 4; when n is 2 or 3, k is 2, 3 or 4, that is, the first uplink subframe corresponds to k 3 or 4, the corresponding k of the second uplink subframe and the third uplink subframe is 2, 3, or 4.
  • the time sequence for the DeNB to schedule the UE and BRU for uplink transmission when the TDD uplink and downlink subframe ratio is 3 is the same as the time sequence for the DeNB to schedule the UE and BRU for uplink transmission when the TDM uplink and downlink subframe ratio is 3. I won't repeat it here.
  • the first uplink subframe corresponds to k being 3 or 4
  • the second uplink subframe and the third uplink subframe correspond to k being 2, 3, or 4.
  • there is at least 1 subframe between the DeNB sending the HARQ feedback and the DeNB receiving the PUSCH from the BRU and there is enough time to obtain the PUSCH demodulation result.
  • TDD uplink and downlink subframe ratio 4 when n is 1 or 2, k is 2, 3 or 4, that is, k is 2, 3, or corresponding to the first uplink subframe and the second uplink subframe. 4.
  • the time sequence for the DeNB to schedule the UE and BRU for uplink transmission when the TDD uplink and downlink subframe ratio is 4 is the same as the time sequence for the DeNB to schedule the UE and BRU for uplink transmission when the TDM uplink and downlink subframe ratio is 3. I won't repeat it here.
  • the corresponding k of the first uplink subframe and the second uplink subframe is 2, 3, or 4. In this case, there is at least 1 subframe between the DeNB sending the HARQ feedback and the DeNB receiving the PUSCH from the BRU, and there is enough time to obtain the PUSCH demodulation result.
  • TDD uplink and downlink subframe ratio 5 when n is 1, k is 2, 3, or 4, that is, k is 2, 3, or 4 for the first uplink subframe.
  • the time sequence of the DeNB scheduling UE and BRU for uplink transmission when the TDD uplink and downlink subframe ratio is 5 in the configuration information is the same as the time sequence of scheduling the UE and BRU for uplink transmission by the DeNB when the TDM uplink and downlink subframe ratio is 5. I won't repeat it here.
  • the corresponding k of the first uplink subframe is 2, 3, or 4.
  • each TDD up and down The corresponding relationship between the row subframe ratio and the value of k is shown in Table 2 below. Among them, Table 2 takes subframe 0 to subframe 9 as an example.
  • sa0 represents TDD uplink and downlink subframe ratio
  • sa1 represents TDD uplink and downlink subframe ratio 1
  • sa2 represents TDD uplink and downlink subframe ratio 2
  • sa3 represents TDD uplink and downlink subframe ratio 3.
  • sa4 represents TDD uplink and downlink subframe ratio 4
  • sa5 represents TDD uplink and downlink subframe ratio 5
  • sa6 represents TDD uplink and downlink subframe ratio 6.
  • subframe 2 represents the first uplink subframe of the UE
  • subframe 3 represents the second uplink subframe of the UE
  • subframe 4 represents the third uplink subframe of the UE
  • subframe 7 represents the UE’s
  • subframe 8 represents the fifth uplink subframe of the UE
  • subframe 9 represents the sixth uplink subframe of the UE; the rest of the subframes are analogized.
  • 2/3 indicates that the value of k is 2 or 3
  • 3/4 indicates that the value of k is 3 or 4
  • 2/3/4 indicates that the value of k is 2 or 3 or 4.
  • the value of k may be different under different TDM uplink and downlink subframe ratios, including the following situations:
  • FIG. 13 is a schematic diagram of a TDM downlink scheduling sequence.
  • line 1 indicates that the DeNB schedules downlink PDCCH or PDSCH for the UE
  • line 2 indicates that the DeNB sends the UE's downlink scheduling management frame information to the BRU
  • line 3 indicates that the DeNB allocates uplink for the BRU Authorization
  • line 4 is the UE sending downlink ACK feedback to the BRU
  • line 5 is the BRU sending PUSCH to the DeNB to relay the UE's downlink ACK feedback.
  • the DeNB continuously reads and schedules multiple downlink subframes. For example, the DeNB schedules downlink for the UE on subframe n, subframe n+1, subframe n+2, subframe n+3, and subframe n+4. PDCCH or PDSCH, and at the same time, the DeNB can send the current downlink scheduling management frame information of the UE to the BRU in subframe n, subframe n+2, and subframe n+4, respectively, and instruct the BRU to demodulate the PUCCH of the UE.
  • the ellipse indicates that for downlink scheduling, these delimited subframes complete downlink ACK feedback in the same uplink subframe.
  • the UE separately sends downlink ACK feedback to the BRU.
  • the UE sends downlink ACK feedback to the BRU together.
  • the UE also sends downlink ACK feedback to the BRU.
  • the first available subframe is called the first uplink subframe.
  • subframe n+2 in FIG. 13 is the first uplink subframe.
  • subframe n+3 is the second uplink subframe
  • subframe n+4 is the third uplink subframe
  • subframe n+7 is the fourth uplink subframe
  • subframe n+8 is the first uplink subframe.
  • subframe n+9 is the sixth uplink subframe.
  • the DeNB schedules the downlink PDCCH or PDSCH for the UE on subframe n, according to the TDM uplink and downlink scheduling timing, it can be known that the BRU sends PUSCH to the DeNB at n+10 to relay the UE’s downlink ACK feedback, and the UE is in the subframe Frame n+4, that is, the third uplink subframe sends downlink ACK feedback to the BRU.
  • the value of k is the difference between (n+6) and (n+4), that is, k is 2.
  • k corresponding to the sixth uplink subframe is also 2, which will not be repeated here.
  • the DeNB schedules the downlink PDCCH or PDSCH for the UE in subframe n+1 and subframe n+2, according to the TDM uplink and downlink scheduling timing, it can be known that the UE sends downlink ACK to the BRU in subframe n+8 Feedback at this time, the value of k is the difference between (n+10) and (n+7), that is, k is 3, that is, the value of k corresponding to the first uplink subframe is 3. In the same way, it can be deduced that k corresponding to the fourth uplink subframe is also 3, which will not be repeated here.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE on subframe n+3 and subframe n+4, and the BRU sends PUSCH to the DeNB at n+10 to relay the downlink ACK feedback of the UE.
  • the UE is on subframe n+8.
  • k corresponding to the fifth uplink subframe is also 2, which will not be repeated here.
  • TDM uplink and downlink subframe ratio 1 when n is 1, 2, 4, and 5, k is 2, that is, the first uplink subframe, the second uplink subframe, and the fourth uplink subframe Corresponding to the fifth uplink subframe, k is 2.
  • FIG. 14 is a schematic diagram of a TDM downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes.
  • the DeNB is the UE on subframe n+2, subframe n+3, subframe n+4, subframe n+5, and subframe n+6.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+2 and subframe n+3, which is called the first downlink scheduling; DeNB schedules downlink PDCCH or PDSCH in subframe n+4, subframe n+5, and subframe
  • the scheduling of downlink PDCCH or PDSCH for the UE on frame n+6 is called second downlink scheduling.
  • the DeNB can send the UE’s current downlink scheduling management frame information to the BRU on subframe n+2, instructing the BRU to demodulate the PUCCH of the UE; for the second downlink scheduling, the DeNB can In subframe n+6, the current downlink scheduling management frame information of the UE can be sent to the BRU to instruct the BRU to demodulate the PUCCH of the UE.
  • the DeNB sends the downlink grant in subframe n+8; for the second downlink scheduling, the DeNB sends the downlink grant in subframe n+9.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+2 and subframe n+3, that is, the first downlink scheduling
  • the UE sends ACK feedback to the BRU in subframe n+9
  • the BRU can send a PUSCH to the DeNB at n+11 to relay the downlink ACK feedback of the UE. Therefore, it can be known that the value of k can be the difference between (n+11) and (n+9), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2.
  • k corresponding to the fourth uplink subframe is also 2, which will not be repeated here.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+4, subframe n+5, and subframe n+6, that is, the second downlink scheduling, it can be known that the UE sends to the BRU in subframe n+12. ACK feedback, then, BRU can send PUSCH to DeNB at n+12 to relay UE's downlink ACK feedback. Therefore, it can be known that the value of k can be the difference between (n+12) and (n+10), that is, k is 2, that is, the value of k corresponding to the second uplink subframe is 2. In the same way, it can be deduced that k corresponding to the fifth uplink subframe is also 2, which will not be repeated here.
  • Fig. 15 is a schematic diagram of a TDM downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes.
  • the DeNB serves the UE in subframe n+2, subframe n+3, subframe n+4, subframe n+5, and subframe n+6.
  • the downlink PDCCH or PDSCH is scheduled, and at the same time, the DeNB can send the current downlink scheduling management frame information of the UE to the BRU in subframe n+6, and instruct the BRU to demodulate the PUCCH of the UE.
  • the DeNB sends a downlink grant in subframe n+9, and the UE sends an ACK feedback to the BRU in subframe n+10. Then, the BRU can send a PUSCH to the DeNB at n+12 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+12) and (n+10), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2. In the same way, it can be deduced that k corresponding to the fourth uplink subframe is also 2, which will not be repeated here.
  • TDM uplink and downlink subframe ratio 3 when n is 1, k is 3; when n is 2 and 3, k is 2, that is, the first uplink subframe corresponds to k is 3, and the second uplink The corresponding k of the subframe and the third uplink subframe is 2.
  • FIG. 16 is a schematic diagram of a TDM downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes. For example, the DeNB reads in subframe n, subframe n+1, subframe n+2, subframe n+3, subframe n+4, subframe n +5 scheduling downlink PDCCH or PDSCH for UE, called first downlink scheduling; DeNB scheduling downlink PDCCH or PDSCH for UE on subframe n+6 and subframe n+7, called second downlink scheduling; DeNB scheduling The downlink PDCCH or PDSCH scheduling for the UE on frame n+8 and subframe n+9 is called the third downlink scheduling.
  • the DeNB can send the UE’s current downlink scheduling management frame information to the BRU in subframe n+5; for the second downlink scheduling, the DeNB can send the UE to the BRU in subframe n+7 The current downlink scheduling management frame information is sent to the BRU; for the third downlink scheduling, the DeNB can send the current downlink scheduling management frame information of the UE to the BRU in subframe n+9.
  • the DeNB For the first downlink scheduling, the DeNB sends a downlink grant in subframe n+10, and the UE sends a downlink ACK feedback to the BRU on subframe n+11. Then, the BRU can send PUSCH to the DeNB at n+14 to relay UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+14) and (n+11), that is, k is 3, that is, the value of k corresponding to the first uplink subframe is 3.
  • the DeNB sends a downlink grant in subframe n+11, and the UE sends a downlink ACK feedback to the BRU on subframe n+12. Then, the BRU can send a PUSCH to the DeNB at n+14 to relay the UE.
  • the downlink ACK feedback can be known that the value of k can be the difference between (n+14) and (n+12), that is, k is 2, that is, the value of k corresponding to the second uplink subframe is 2.
  • the DeNB sends a downlink grant in subframe n+12, and the UE sends a downlink ACK feedback to the BRU on subframe n+13. Then, the BRU can send PUSCH to the DeNB at n+15 to relay the UE.
  • the downlink ACK feedback can be known that the value of k can be the difference between (n+15) and (n+13), that is, k is 2, that is, the value of k corresponding to the third uplink subframe is 2.
  • FIG. 17 is a schematic diagram of a TDM downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes. For example, the DeNB schedules downlink for the UE on subframe n, subframe n+1, subframe n+2, subframe n+3, and subframe n+4.
  • PDCCH or PDSCH is called first downlink scheduling; DeNB schedules downlink PDCCH or PDSCH for UE on subframe n+5, subframe n+6, subframe n+7, and subframe n+8, called second downlink Scheduling.
  • the DeNB can send the UE’s current downlink scheduling management frame information to the BRU in subframe n+4; for the second downlink scheduling, the DeNB can send the UE to the BRU in subframe n+8 The downlink scheduling management frame information is sent to the BRU this time.
  • the DeNB For the first downlink scheduling, the DeNB sends a downlink grant in subframe n+9, and the UE sends a downlink ACK feedback to the BRU on subframe n+11. Then, the BRU can send PUSCH to the DeNB at n+13 to relay UE's downlink ACK feedback. Therefore, it can be known that the value of k can be the difference between (n+13) and (n+11), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2.
  • the DeNB sends a downlink grant in subframe n+10, and the UE sends a downlink ACK feedback to the BRU on subframe n+12. Then, the BRU can send PUSCH to the DeNB at n+14 to relay the UE.
  • the downlink ACK feedback can be known that the value of k can be the difference between (n+14) and (n+12), that is, k is 2, that is, the value of k corresponding to the second uplink subframe is 2.
  • FIG. 18, is a schematic diagram of a TDM downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes. For example, the DeNB reads in subframe n, subframe n+1, subframe n+2, subframe n+3, subframe n+4, subframe n +5.
  • the downlink PDCCH or PDSCH is scheduled for the UE in subframe n+6 and subframe n+7, and the DeNB can send the UE's current downlink scheduling management frame information to the BRU in subframe n+7.
  • the DeNB sends a downlink grant in subframe n+9, and the UE sends a downlink ACK feedback to the BRU in subframe n+11. Then, the BRU can send a PUSCH to the DeNB at n+13 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k can be the difference between (n+13) and (n+11), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2.
  • TDM uplink and downlink subframe ratio 6 when n is 1, k is 3; when n is 2, 3, 4, and 5, k is 2, that is, the first uplink subframe corresponds to k is 3.
  • the corresponding k of the second uplink subframe, the third uplink subframe, the fourth uplink subframe, and the fifth uplink subframe is 2.
  • FIG. 19 is a schematic diagram of a TDM downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+2, which is called the first downlink scheduling;
  • DeNB schedules multiple downlink subframes in subframe n+3.
  • Scheduling downlink PDCCH or PDSCH for UE on n+4 and subframe n+5 is called second downlink scheduling; DeNB scheduling downlink PDCCH or PDSCH for UE on subframe n+6 and subframe n+7, called third downlink Scheduling; DeNB schedules downlink PDCCH or PDSCH for UE on subframe n+8 and subframe n+9, called fourth downlink scheduling; DeNB schedules downlink PDCCH or PDSCH for UE on subframe n+10 and subframe n+11 , Called the fifth downlink scheduling.
  • the DeNB can send the UE’s current downlink scheduling management frame information to the BRU on subframe n+2; for the second downlink scheduling, the DeNB can send the UE on subframe n+5 This downlink scheduling management frame information is sent to the BRU; for the third downlink scheduling, the DeNB can send the UE’s current downlink scheduling management frame information to the BRU on subframe n+7; for the fourth downlink scheduling, the DeNB In subframe n+9, the UE’s current downlink scheduling management frame information can be sent to the BRU; for the fifth downlink scheduling, the DeNB can send the UE’s current downlink scheduling management frame information to the BRU in subframe n+11 .
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+2, and the UE sends downlink ACK feedback to the BRU in subframe n+9, then the BRU can send to the DeNB in n+11 PUSCH is used to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+11) and (n+9), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2.
  • the UE sends a downlink ACK feedback to the BRU in subframe n+10, and the BRU may send a PUSCH to the DeNB at n+12 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+12) and (n+10), that is, k is 2, that is, the value of k corresponding to the second uplink subframe is 2.
  • the UE sends downlink ACK feedback to the BRU in subframe n+10, and the BRU may send a PUSCH to the DeNB at n+12 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+12) and (n+10), that is, k is 2, that is, the value of k corresponding to the third uplink subframe is 2.
  • the UE sends downlink ACK feedback to the BRU in subframe n+15, and the BRU may send a PUSCH to the DeNB at n+17 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+17) and (n+15), that is, k is 2, that is, the value of k corresponding to the fourth uplink subframe is 3.
  • the UE sends a downlink ACK feedback to the BRU in subframe n+16, and the BRU may send a PUSCH to the DeNB at n+18 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+18) and (n+16), that is, k is 2, that is, the value of k corresponding to the fifth uplink subframe is 2.
  • Table 3 takes HARQ offset of 0 and 1 as an example, where HARQ offset of 0 corresponds to subframe 2, subframe 3, and subframe 4, and HARQ offset of 0 corresponds to subframe 7, subframe 8, and subframe 9.
  • sa0 represents TDM uplink and downlink subframe ratio
  • sa1 represents TDM uplink and downlink subframe ratio 1
  • sa2 represents TDM uplink and downlink subframe ratio 2
  • sa3 represents TDM uplink and downlink subframe ratio 3.
  • sa4 represents TDM uplink and downlink subframe ratio 4
  • sa5 represents TDM uplink and downlink subframe ratio 5
  • sa6 represents TDM uplink and downlink subframe ratio 6.
  • Subframe 2 represents the first uplink subframe of the UE
  • subframe 3 represents the second uplink subframe of the UE
  • subframe 4 represents the third uplink subframe of the UE
  • subframe 7 represents the fourth uplink subframe of the UE.
  • subframe 8 represents the fifth uplink subframe of the UE
  • subframe 9 represents the sixth uplink subframe of the UE.
  • the embodiment of the present application can make the UE in each LTE frame. All downlink subframes can be scheduled, saving air interface resources.
  • the DeNE also does not need to continuously schedule the BRU to transmit the uplink PUSCH, thereby reducing the uplink air interface overhead.
  • the downlink subframes of the UE and BRU can be allocated according to TDD .
  • the configuration information includes the TDD uplink and downlink subframe ratio
  • the value of k may be different under different TDD uplink and downlink subframe ratios, including the following situations:
  • TDD uplink and downlink subframe ratio 1 when n is 1, 2, 4, or 5, k2 is 2, that is, the first uplink subframe, the second uplink subframe, and the fourth uplink subframe Corresponding to the fifth uplink subframe, k is 2.
  • FIG. 20 is a schematic diagram of a TDD downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+2 and subframe n+3, which is called the first downlink scheduling; Scheduling downlink PDCCH or PDSCH for UE on n+6 is called second downlink scheduling.
  • the DeNB can send the UE’s current downlink scheduling management frame information to the BRU in subframe n+3, instructing the BRU to demodulate the PUCCH of the UE; for the second downlink scheduling, the DeNB can In subframe n+6, the current downlink scheduling management frame information of the UE can be sent to the BRU to instruct the BRU to demodulate the PUCCH of the UE.
  • the DeNB sends the downlink grant in subframe n+8; for the second downlink scheduling, the DeNB sends the downlink grant in subframe n+9.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+2 and subframe n+3, that is, during the first downlink scheduling, it can be known that the UE is in subframe n+ Send downlink ACK feedback to the BRU on 9th, then the BRU can send a PUSCH to the DeNB at n+11 to relay the downlink ACK feedback of the UE. Therefore, it can be known that the value of k is the difference between (n+11) and (n+9), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2. In the same way, it can be deduced that k corresponding to the fourth uplink subframe is also 2, which will not be repeated here.
  • the DeNB schedules the downlink PDCCH or PDSCH for the UE in subframe n+6, that is, the second downlink scheduling
  • the UE sends downlink ACK feedback to the BRU in subframe n+12
  • the BRU can be in n+ 12 Send PUSCH to DeNB to relay UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+12) and (n+10), that is, k is 2, that is, the value of k corresponding to the second uplink subframe is 2.
  • k corresponding to the fifth uplink subframe is also 2, which will not be repeated here.
  • TDD uplink and downlink subframe ratio 2 when n is 1 or 2, k is 2, that is, k is 2 for the first uplink subframe and the second uplink subframe.
  • FIG. 21 is a schematic diagram of a TDD downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes. For example, the DeNB schedules downlink PDCCH or PDSCH for the UE on subframe n+2, subframe n+3, subframe n+4, and subframe n+6.
  • the DeNB may send the current downlink scheduling management frame information of the UE to the BRU in subframe n+6, and instruct the BRU to demodulate the PUCCH of the UE.
  • the DeNB sends a downlink grant in subframe n+9, and the UE sends a downlink ACK feedback to the BRU in subframe n+10.
  • the BRU can send a PUSCH to the DeNB at n+12 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+12) and (n+10), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2. In the same way, it can be deduced that k corresponding to the fourth uplink subframe is also 2, which will not be repeated here.
  • TDD uplink and downlink subframe ratio 3 when n is 1, k is 3, when n is 2 and 3, k is 2, that is, the first uplink subframe corresponds to k is 3, and the second uplink The corresponding k of the subframe and the third uplink subframe is 2.
  • FIG. 22 is a schematic diagram of a TDD downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes. For example, the DeNB schedules downlink PDCCH or PDSCH for the UE on subframe n, subframe n+4, and subframe n+5, which is called first downlink scheduling; DeNB schedules downlink PDCCH or PDSCH for UE in subframe n+6 and subframe n+7, which is called second downlink scheduling; DeNB schedules downlink PDCCH or PDSCH for UE in subframe n+8 and subframe n+9, which is called For the third downlink scheduling.
  • the DeNB can send the UE’s current downlink scheduling management frame information to the BRU in subframe n+5; for the second downlink scheduling, the DeNB can send the UE to the BRU in subframe n+7 The current downlink scheduling management frame information is sent to the BRU; for the third downlink scheduling, the DeNB can send the current downlink scheduling management frame information of the UE to the BRU in subframe n+9.
  • the DeNB For the first downlink scheduling, the DeNB sends a downlink grant in subframe n+10, and the UE sends a downlink ACK feedback to the BRU on subframe n+11. Then, the BRU can send PUSCH to the DeNB at n+14 to relay UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+14) and (n+11), that is, k is 3, that is, the value of k corresponding to the first uplink subframe is 3.
  • the DeNB sends a downlink grant in subframe n+11, and the UE sends a downlink ACK feedback to the BRU on subframe n+12. Then, the BRU can send a PUSCH to the DeNB at n+14 to relay the UE.
  • the downlink ACK feedback Therefore, it can be known that the value of k is the difference between (n+14) and (n+12), that is, k is 2, that is, the value of k corresponding to the second uplink subframe is 2.
  • the DeNB sends a downlink grant in subframe n+12, and the UE sends a downlink ACK feedback to the BRU on subframe n+13. Then, the BRU can send PUSCH to the DeNB at n+15 to relay the UE.
  • the downlink ACK feedback Therefore, it can be known that the value of k is the difference between (n+15) and (n+13), that is, k is 2, that is, the value of k corresponding to the third uplink subframe is 2.
  • TDD uplink and downlink subframe ratio 4 when n is 1 or 2, k is 2, that is, k is 2 for the first uplink subframe and the second uplink subframe.
  • FIG. 23 is a schematic diagram of a TDD downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes.
  • the DeNB schedules downlink PDCCH or PDSCH for the UE on subframe n, subframe n+3, and subframe n+4, which is called the first downlink scheduling;
  • the DeNB schedules downlink PDCCH or PDSCH for the UE in subframe n+5, subframe n+6, subframe n+7, and subframe n+8, which is called second downlink scheduling.
  • the DeNB can send the UE’s current downlink scheduling management frame information to the BRU in subframe n+4; for the second downlink scheduling, the DeNB can send the UE to the BRU in subframe n+8 The downlink scheduling management frame information is sent to the BRU this time.
  • the DeNB For the first downlink scheduling, the DeNB sends a downlink grant in subframe n+9, and the UE sends a downlink ACK feedback to the BRU on subframe n+11. Then, the BRU can send PUSCH to the DeNB at n+13 to relay UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+13) and (n+11), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2.
  • the DeNB sends a downlink grant in subframe n+10, and the UE sends a downlink ACK feedback to the BRU on subframe n+12. Then, the BRU can send PUSCH to the DeNB at n+14 to relay the UE.
  • the downlink ACK feedback Therefore, it can be known that the value of k is the difference between (n+14) and (n+12), that is, k is 2, that is, the value of k corresponding to the second uplink subframe is 2.
  • FIG. 24 is a schematic diagram of a TDD downlink scheduling sequence.
  • the DeNB continuously reads and schedules multiple downlink subframes. For example, the DeNB reads in subframe n, subframe n+2, subframe n+3, subframe n+4, subframe n+5, and subframe n.
  • the downlink PDCCH or PDSCH is scheduled for the UE on +6 and subframe n+7, and the DeNB can send the UE’s current downlink scheduling management frame information to the BRU on subframe n+7.
  • the DeNB sends a downlink grant in subframe n+9, and the UE sends a downlink ACK feedback to the BRU in subframe n+11. Then, the BRU can send a PUSCH to the DeNB at n+13 to relay the UE's downlink ACK feedback. Therefore, it can be known that the value of k is the difference between (n+13) and (n+11), that is, k is 2, that is, the value of k corresponding to the first uplink subframe is 2.
  • the configuration information includes the TDD uplink and downlink subframe ratio
  • the corresponding relationship between the TDM uplink and downlink subframe ratio and the value of k is shown in Table 4 below.
  • Table 4 takes subframe n to subframe n+9, and n is equal to 0 as an example.
  • sa0 represents TDD uplink and downlink subframe ratio
  • sa1 represents TDD uplink and downlink subframe ratio 1
  • sa2 represents TDD uplink and downlink subframe ratio 2
  • sa3 represents TDD uplink and downlink subframe ratio 3.
  • sa4 represents TDD uplink and downlink subframe ratio 4
  • sa5 represents TDD uplink and downlink subframe ratio 5
  • sa6 represents TDD uplink and downlink subframe ratio 6.
  • Subframe 2 represents the first uplink subframe of the UE
  • subframe 3 represents the second uplink subframe of the UE
  • subframe 4 represents the third uplink subframe of the UE
  • subframe 7 represents the fourth uplink subframe of the UE.
  • subframe 8 represents the fifth uplink subframe of the UE
  • subframe 9 represents the sixth uplink subframe of the UE.
  • the base station has enough time to obtain the demodulation result of the PUSCH from the UE before scheduling HARQ; and the base station can save the uplink air interface as much as possible when scheduling the UE and BRU in downlink. Resource overhead.
  • Figure 25 is a schematic diagram of the random access process of the UE and the uplink and downlink scheduling process in the connected state. The specific process is described as follows:
  • the UE sends a random sequence Preamble to the RBU, so that the BRU sends the Preamble to the DeNB.
  • the UE sends a PRACH to the RBU, and the PRACH carries the Preamble.
  • the BRU demodulates the received PRACH and sends an uplink data channel to the DeNB.
  • the RBU and DeNB can determine whether the uplink channel transmitted by the UE is forwarded by the BRU according to the detection result of the Preamble, that is, whether the UE is a relay transmission user. If the DeNB determines that the uplink channel transmitted by the UE is forwarded by the BRU, the BRU can directly amplify the downlink channel signal, then the DeNB only receives the uplink data channel forwarded by the BRU, and does not perform other processing on the uplink data channel signal.
  • the DeNB sends MSG2 and MSG3 to the UE.
  • the DeNB can schedule MSG2 and MSG3 in any uplink subframe.
  • the UE sends an MSG3 or RRC link request to the BRU, so that the BRU sends an MSG3 or RRC link request to the DeNB.
  • the DeNB can instruct the UE to perform adaptive or non-adaptive retransmission at the retransmission time according to the FDD uplink synchronization HARQ scheduling timing.
  • the DeNB sends an MSG4 or RRC reconfiguration connection message to the UE, where the MSG4 or RRC reconfiguration connection message includes the aforementioned configuration information.
  • the configuration information can include the TDM uplink and downlink subframe ratio, and it can also include the TDD uplink and downlink subframe ratio, which can indicate the uplink and downlink subframe scheduling timing relationship for the UE to perform uplink and downlink transmission, that is, the DeNB schedules the UE and the BRU for uplink and downlink.
  • the transmitted uplink subframe can include the TDM uplink and downlink subframe ratio, and it can also include the TDD uplink and downlink subframe ratio, which can indicate the uplink and downlink subframe scheduling timing relationship for the UE to perform uplink and downlink transmission, that is, the DeNB schedules the UE and the BRU for uplink and downlink.
  • the transmitted uplink subframe can include the TDM uplink and downlink subframe ratio, and it can also include the TDD uplink and downlink subframe ratio, which can indicate the uplink and downlink subframe scheduling timing relationship for the UE to perform uplink and downlink transmission, that is, the DeNB schedules the UE and the BRU for up
  • the UE sends the first uplink channel to the BRU according to the configuration information, so that the BRU forwards the first uplink channel to the DeNB.
  • the first uplink channel may be PUSCH or PUCCH
  • the BRU may send a second uplink channel to the DeNB, and the second uplink channel carries the demodulation result of the first uplink channel.
  • the DeNB schedules the UE and the BRU according to the uplink and downlink scheduling timing indicated by the configuration information.
  • the subsequent process may include:
  • S256 The UE sends MSG5 or downlink ACK feedback to the BRU.
  • the DeNB sends downlink channels such as PDCCH, PDSCH, or PHICH to the UE, so that the UE receives on all FDD downlink subframes.
  • downlink channels such as PDCCH, PDSCH, or PHICH
  • the UE sends uplink channels such as PUCCH, PUSCH, or Sounding to the BRU according to the uplink subframe indicated by the configuration information, so that the BRU receives the uplink channels such as PUCCH, PUSCH, or Sounding.
  • uplink channels such as PUCCH, PUSCH, or Sounding.
  • the BRU demodulates and decodes the received uplink channels such as PUCCH, PUSCH, or Sounding, and sends the uplink channel to the DeNB in the uplink subframes that are not used by the UE indicated by the configuration information.
  • the uplink channel includes the received PUCCH, PUSCH Or the demodulation result of the uplink channel such as Sounding.
  • the configuration information can be used to instruct the terminal device to send the first uplink channel to the relay device on subframe n, and to schedule the relay device to send the second uplink channel to the network device on subframe n+k,
  • the configuration information can constrain the time difference between subframe n+K and subframe n+k to ensure that the network device receives and decodes correctly The second uplink channel sent by the relay device to the network device in the subframe n+k.
  • the method provided in the embodiments of the present application can enable the DeNB to have enough time to complete the demodulation and decoding of the relay PUSCH before sending the HARQ feedback, thereby avoiding possible conflicts of PUSCH synchronization HARQ.
  • the methods provided in the embodiments of the present application are introduced from the perspective of network equipment, terminal, and interaction between the network equipment and the terminal.
  • the network device and the terminal may include hardware structures and/or software modules, and the above functions are implemented in the form of hardware structures, software modules, or hardware structures plus software modules. Whether one of the above-mentioned functions is executed in a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • FIG. 26 shows a schematic structural diagram of a communication device 2600.
  • the communication device 2600 may be a network device, which can realize the function of the network device in the method provided in the embodiment of this application; the communication device 2600 may also be a device that can support the network device to realize the function of the network device in the method provided in the embodiment of this application .
  • the communication device 2600 may be a hardware structure, a software module, or a hardware structure plus a software module.
  • the communication device 2600 may be implemented by a chip system. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.
  • the communication device 2600 may include a processing module 2601 and a communication module 2602.
  • the processing module 2601 may be used to perform step S32 in the embodiment shown in FIG. 4, and/or used to support other processes of the technology described herein.
  • the communication module 2602 is used for the communication device 2600 to communicate with other modules, and it may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication.
  • the communication module 2602 may be used to perform step S31 in the embodiment shown in FIG. 4, and/or used to support other processes of the technology described herein.
  • FIG. 27 shows a schematic structural diagram of a communication device 2700.
  • the communication device 2700 may be a terminal, which can realize the function of the terminal in the method provided in the embodiment of this application; the communication device 2700 may also be a device that can support the terminal to realize the function of the terminal in the method provided in the embodiment of this application.
  • the communication device 2700 may be a hardware structure, a software module, or a hardware structure plus a software module.
  • the communication device 2700 may be implemented by a chip system. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.
  • the communication device 2700 may include a processing module 2701 and a communication module 2702.
  • the processing module 2701 may be used to perform step S33 in the embodiment shown in FIG. 4, and/or used to support other processes of the technology described herein.
  • the communication module 2702 may be used to perform step S31 in the embodiment shown in FIG. 4, and/or used to support other processes of the technology described herein.
  • the communication module 2702 is used for the communication device 2700 to communicate with other modules, and it may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional modules in the various embodiments of the present application may be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • FIG. 28 shows a communication device 2800 provided in an embodiment of this application, where the communication device 2800 may be a network device in the embodiment shown in FIG. 4, and can realize the function of the network device in the method provided in the embodiment of this application;
  • the communication device 2800 may also be a device that can support the network device to implement the function of the network device in the method provided in the embodiments of the present application.
  • the communication device 2800 may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the aforementioned communication module 2602 may be a transceiver, and the transceiver is integrated in the communication device 2800 to form a communication interface 2810.
  • the communication device 2800 includes at least one processor 2820, which is used to implement or support the communication device 2800 to implement the function of the network device in the method provided in the embodiment of the present application.
  • the processor 2820 may determine the scheduling indication information. For details, refer to the detailed description in the method example, which is not repeated here.
  • the communication device 2800 may also include at least one memory 2830 for storing program instructions and/or data.
  • the memory 2830 and the processor 2820 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 2820 may cooperate with the memory 2830.
  • the processor 2820 may execute program instructions stored in the memory 2830. At least one of the at least one memory may be included in the processor.
  • the communication device 2800 may further include a communication interface 2810 for communicating with other devices through a transmission medium, so that the device used in the communication device 2800 can communicate with other devices.
  • the other device may be a terminal.
  • the processor 2820 can use the communication interface 2810 to send and receive data.
  • the communication interface 2810 may specifically be a transceiver.
  • the embodiment of the present application does not limit the specific connection medium between the communication interface 2810, the processor 2820, and the memory 2830.
  • the memory 2830, the processor 2820, and the communication interface 2810 are connected by a bus 2840.
  • the bus is represented by a thick line in FIG. 28.
  • the connection mode between other components is only for schematic illustration. , Is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in FIG. 28, but it does not mean that there is only one bus or one type of bus.
  • the processor 2820 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. Or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the memory 2830 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory (volatile memory), For example, random-access memory (RAM).
  • the memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function, for storing program instructions and/or data.
  • Figure 29 shows a communication device 2900 provided by an embodiment of this application.
  • the communication device 2900 may be a terminal device, which can realize the function of the terminal device in the method provided by the embodiment of this application; the communication device 2900 may also be capable of supporting a terminal.
  • the communication device 2900 may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the aforementioned communication module 2702 may be a transceiver, and the transceiver is integrated in the communication device 2900 to form a communication interface 2910.
  • the communication device 2900 includes at least one processor 2920, configured to implement or support the communication device 2900 to implement the function of the terminal in the method provided in the embodiment of the present application.
  • the processor 2920 may perform transmission in one transmission unit or multiple transmission units according to the scheduling indication information. For details, refer to the detailed description in the method example, which is not repeated here.
  • the communication device 2900 may also include at least one memory 2930 for storing program instructions and/or data.
  • the memory 2930 and the processor 2920 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 2920 may cooperate with the memory 2930 to operate.
  • the processor 2920 may execute program instructions stored in the memory 2930. At least one of the at least one memory may be included in the processor.
  • the communication device 2900 may further include a communication interface 2910 for communicating with other devices through a transmission medium, so that the device used in the device 2900 can communicate with other devices.
  • the other device may be a network device.
  • the processor 2920 can use the communication interface 2910 to send and receive data.
  • the communication interface 2910 may specifically be a transceiver.
  • the embodiment of the present application does not limit the specific connection medium between the communication interface 2910, the processor 2920, and the memory 2930.
  • the memory 2930, the processor 2920, and the communication interface 2910 are connected by a bus 2940.
  • the bus is represented by a thick line in FIG. 29.
  • the connection mode between other components is only for schematic illustration. , Is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used to represent in FIG. 29, but it does not mean that there is only one bus or one type of bus.
  • the processor 2920 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. Or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the memory 2930 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory (volatile memory). For example, random-access memory (RAM).
  • the memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function, for storing program instructions and/or data.
  • the communication device in the embodiment of the present application is a network device.
  • the network device may be as shown in FIG. 30, and the network device may be applied to the system as shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiment.
  • the network device 300 may include one or more radio frequency units, such as a remote radio unit (RRU) 3010 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU). ) 3020.
  • RRU 3010 may be called a communication module, which corresponds to the communication module 2602 in FIG. 26.
  • the communication module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 3011 ⁇ RF unit 3012.
  • the RRU 3010 part is mainly used for sending and receiving of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal equipment.
  • the 3020 part of the BBU is mainly used for baseband processing and control of the base station.
  • the RRU 3010 and the BBU 3020 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 3020 is the control center of the base station, and may also be called a processing module, which may correspond to the processing module 2601 in FIG. 26, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU processing module
  • the BBU may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing configuration information.
  • the BBU 3020 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access standard (such as an LTE network), or support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 3020 also includes a memory 3021 and a processor 3022.
  • the memory 3021 is used to store necessary instructions and data.
  • the processor 3022 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 3021 and the processor 3022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the communication device in the embodiment of the present application is a terminal device.
  • the terminal device may be as shown in FIG. 31, which shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate.
  • the terminal uses a mobile phone as an example.
  • the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, control the terminal, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminals may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 31 only one memory and processor are shown in FIG. 31. In actual end products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and/or a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal. Execute the software program and process the data of the software program.
  • the processor in FIG. 31 can integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and are interconnected by technologies such as buses.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and the control circuit with the transceiving function can be regarded as the transceiving unit of the terminal device, for example, to support the terminal device to perform the receiving function and the transmitting function as described in the part of FIG. 4.
  • the processor with processing functions is regarded as the processing unit of the terminal device.
  • the terminal equipment includes a transceiver unit and a processing unit.
  • the transceiver unit can also be called a transceiver, transceiver, transceiver, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit can be regarded as the sending unit, that is, the transceiver unit includes the receiving unit and the sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit is used to perform the sending and receiving operations on the terminal side in the foregoing method embodiment, and the processing unit is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • the transceiver unit is used to perform the receiving operation on the terminal side in step S31 in the embodiment shown in FIG. 4, and/or the transceiver unit is also used to perform other terminal side operations in the embodiment of this application.
  • Send and receive steps The processing unit is configured to execute step S33 in the embodiment shown in FIG. 4, and/or the processing unit is also configured to execute other processing steps on the terminal side in the embodiment of the present application.
  • the processor may be used to execute instructions stored in the memory to control the transceiver unit to receive signals and/or send signals, and complete the functions of the terminal device in the foregoing method embodiments.
  • the function of the transceiver unit may be implemented by a transceiver circuit or a dedicated chip for transceiver.
  • the chip When the communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit is a processor or microprocessor or integrated circuit integrated on the chip.
  • the device shown in FIG. 32 can be referred to.
  • the device can perform functions similar to the processor 3020 in FIG. 30.
  • the device includes a processor 3210, a data sending processor 3220, and a data receiving processor 3330.
  • the processing module 2701 in the foregoing embodiment may be the processor 3210 in FIG. 32, and completes corresponding functions.
  • the transceiver module 2702 in the foregoing embodiment may be the sending data processor 3220 and/or the receiving data processor 3230 in FIG. 32.
  • the channel encoder and the channel decoder are shown in FIG. 32, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.
  • Fig. 33 shows another form of this embodiment.
  • the processing device 3300 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the communication device in this embodiment can be used as a modulation subsystem therein.
  • the modulation subsystem may include a processor 3303 and an interface 3304.
  • the processor 3303 completes the function of the aforementioned processing module 2701
  • the interface 3304 completes the function of the aforementioned communication module 2702.
  • the modulation subsystem includes a memory 3306, a processor 3303, and a program stored in the memory 3306 and running on the processor. When the processor 3303 executes the program, the terminal side of the above method embodiment is implemented. method.
  • the memory 3306 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 3300, as long as the memory 3406 can be connected to the The processor 3303 is fine.
  • the communication device 2800 includes means for determining configuration information and means for sending configuration information.
  • the functions of the means for generating configuration information and the means for sending scheduling indication information may be realized by one or more processors.
  • the configuration information may be generated by one or more processors, and the scheduling instruction information may be sent through a transceiver, or an input/output circuit, or an interface of a chip.
  • the configuration information refer to the related description in the above method embodiment.
  • the communication device 2800 includes a means for receiving configuration information and a means for transmitting data according to the configuration information.
  • the configuration information and how to schedule the terminal device and the relay device to transmit data in uplink and downlink according to the configuration information refer to the related description in the above method embodiment.
  • the configuration information may be received through a transceiver, or an input/output circuit, or an interface of a chip, and one or more processors may schedule the terminal device and the relay device to transmit data in uplink and downlink according to the configuration information.
  • the processor 2801 may implement other functions in addition to implementing the method of the embodiment shown in FIG. 4.
  • the communication device 2800 may also include a circuit, and the circuit may implement the function of the network device or terminal in the foregoing method embodiment.
  • the communication device 2800 may include one or more memories, on which instructions are stored, the instructions may be executed on the processor, so that the communication device 2800 performs the foregoing method implementation The method described in the example.
  • data may also be stored in the memory.
  • the optional processor may also store instructions and/or data.
  • the one or more memories may store the corresponding relationship described in the foregoing embodiment, or related parameters or tables involved in the foregoing embodiment.
  • the processor and memory can be provided separately or integrated together.
  • the communication device 2800 may further include a transceiver unit 3012 and an antenna 3011.
  • the processor 3022 may be called a processing unit, and controls a communication device (terminal or base station).
  • the transceiver unit 3012 may be called a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the communication device through the antenna 3011.
  • the present application also provides a communication system, which includes the aforementioned one or more network devices, and, one or more terminals, and a relay device.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the embodiment of the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the communication method described in any of the foregoing method embodiments is implemented.
  • the embodiments of the present application also provide a computer program product, which, when executed by a computer, implements the communication method described in any of the foregoing method embodiments.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state disk (Solid State Disk, SSD)) etc.
  • An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the communication method described in any of the foregoing method embodiments.
  • the foregoing processing device may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, At this time, the processor may be a general-purpose processor, which is implemented by reading the software code stored in the memory, and the memory may be integrated in the processor, may be located outside the processor, and exist independently.
  • one embodiment or “an embodiment” mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the appearance of "in one embodiment” or “in an embodiment” in various places throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that, in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application. The implementation process constitutes any limitation.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean that B is determined only according to A, and B can also be determined according to A and/or other information.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • Computer readable media include computer storage media and communication media, where communication media includes any media that facilitates the transfer of computer programs from one place to another.
  • the storage medium may be any available medium that can be accessed by a computer.
  • computer readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data structures
  • Any connection can suitably become a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , Fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless and microwave are included in the fixing of the media.
  • Disk and disc include compact discs (CD), laser discs, optical discs, digital versatile discs (DVD), floppy discs and Blu-ray discs. Disks usually copy data magnetically, while discs The laser is used to optically copy data. The above combination should also be included in the protection scope of the computer-readable medium.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil de communication. Le procédé comprend : l'envoi, par un dispositif de réseau, d'informations de configuration à un dispositif terminal, les informations de configuration étant utilisées pour indiquer une sous-trame de liaison montante sur laquelle le dispositif terminal envoie un premier canal de liaison montante à un dispositif relais, ainsi qu'une sous-trame de liaison montante sur laquelle le dispositif relais envoie un second canal de liaison montante au dispositif de réseau ; et selon les informations de configuration, la planification, par le dispositif de réseau, du dispositif terminal pour envoyer le premier canal de liaison montante au dispositif relais sur une sous-trame n1 et la planification du dispositif relais pour envoyer le second canal de liaison montante au dispositif de réseau sur une sous-trame n1+k1 ; la sous-trame n1+K est une sous-trame sur laquelle le dispositif de réseau envoie une information en retour HARQ au dispositif terminal, n1 est un nombre entier positif, k1 et K sont tous deux des nombres entiers supérieurs à 1, et la différence de temps entre la sous-trame n1+K et la sous-trame n1+k1 peut garantir que le dispositif de réseau reçoive et décode correctement le second canal de liaison montante envoyé par le dispositif relais au dispositif de réseau sur la sous-trame n1+k1 afin d'empêcher d'éventuels conflits dans la HARQ de synchronisation de PUSCH.
PCT/CN2019/093871 2019-06-28 2019-06-28 Procédé et appareil de communication WO2020258301A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010019083A1 (fr) * 2008-08-15 2010-02-18 Telefonaktiebolaget L M Ericsson (Publ) Répartition temporelle relative pour codage réseau
CN101882985A (zh) * 2009-05-06 2010-11-10 中兴通讯股份有限公司 混合自动重传请求发送的指示方法及其基站
CN101908954A (zh) * 2009-06-03 2010-12-08 中兴通讯股份有限公司 一种解决中继节点上行传输冲突的方法及装置
WO2014188499A1 (fr) * 2013-05-20 2014-11-27 富士通株式会社 Appareil et procédé de relais radio et terminal radio
WO2017194218A1 (fr) * 2016-05-13 2017-11-16 Nokia Solutions And Networks Oy Opération de relais sans fil sur la partie supérieure d'une structure de cadre 5g
WO2019105564A1 (fr) * 2017-11-30 2019-06-06 Nokia Technologies Oy Procédé et appareil de raccordement dans des réseaux 5g

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010019083A1 (fr) * 2008-08-15 2010-02-18 Telefonaktiebolaget L M Ericsson (Publ) Répartition temporelle relative pour codage réseau
CN101882985A (zh) * 2009-05-06 2010-11-10 中兴通讯股份有限公司 混合自动重传请求发送的指示方法及其基站
CN101908954A (zh) * 2009-06-03 2010-12-08 中兴通讯股份有限公司 一种解决中继节点上行传输冲突的方法及装置
WO2014188499A1 (fr) * 2013-05-20 2014-11-27 富士通株式会社 Appareil et procédé de relais radio et terminal radio
WO2017194218A1 (fr) * 2016-05-13 2017-11-16 Nokia Solutions And Networks Oy Opération de relais sans fil sur la partie supérieure d'une structure de cadre 5g
WO2019105564A1 (fr) * 2017-11-30 2019-06-06 Nokia Technologies Oy Procédé et appareil de raccordement dans des réseaux 5g

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