Signal receiving method, signal sending method, terminal device and storage medium

Abstract

The present invention discloses a signal receiving method, a signal sending method, a terminal device, and a storage medium, including: a first terminal device preferentially receives downlink signals from a network device that meet preset conditions. In the event of a signal reception conflict, the present invention prioritizes receiving downlink signals from the network device that meet the preset conditions, thereby improving signal processing efficiency.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a signal receiving method, a signal sending method, a terminal device and a storage medium. Background Art

[0002] In a communication system, a terminal device can receive downlink signals sent by a network device via a downlink, and can also send uplink signals to a network device via an uplink. Furthermore, a terminal device can communicate with other terminal devices via a sidelink, i.e., a terminal device can receive sidelink signals sent by other terminal devices via a sidelink, and a terminal device can also send sidelink signals to other terminal devices via a sidelink.

[0003] If the terminal device has limited signal receiving capabilities, for example, the terminal device cannot receive downlink signals and sidelink signals in the same time period, that is, a conflict occurs when the terminal device receives downlink signals and sidelink signals, then how the terminal device resolves the conflict is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] The embodiments of the present invention provide a signal receiving method, a signal sending method, a terminal device and a storage medium, which can give priority to receiving downlink signals that meet preset conditions from network devices when there is a signal reception conflict, thereby improving signal processing efficiency.

[0005] In a first aspect, an embodiment of the present application provides a signal receiving method, including:

[0006] The first terminal device preferentially receives downlink signals from the network device that meet preset conditions.

[0007] In a second aspect, an embodiment of the present application provides a signal transmission method, including:

[0008] The third terminal device preferentially sends uplink signals that meet preset conditions.

[0009] In a third aspect, embodiments of the present application provide a terminal device having the functionality to implement the aforementioned signal receiving method. The functionality may be implemented in hardware or by hardware executing corresponding software. The hardware or software may include one or more units corresponding to the aforementioned functionality.

[0010] In a fourth aspect, an embodiment of the present application provides a terminal device, comprising a processor coupled to the memory, wherein:

[0011] The memory is used to store instructions;

[0012] The processor is configured to preferentially receive downlink signals from network equipment that meet preset conditions.

[0013] In a fifth aspect, an embodiment of the present application provides a terminal device having the function of implementing the above-mentioned signal transmission method. The function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above-mentioned functions.

[0014] In a sixth aspect, an embodiment of the present application provides a terminal device, comprising a processor coupled to the memory, wherein:

[0015] The memory is used to store instructions;

[0016] The processor is configured to preferentially send uplink signals that meet preset conditions.

[0017] In the seventh aspect, an embodiment of the present application provides a computer storage medium, wherein the computer-readable storage medium stores a computer program or instructions, and when the program or instructions are executed by a processor, the processor executes the signal receiving method as described in the first aspect.

[0018] In an eighth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package.

[0019] In the ninth aspect, an embodiment of the present application provides a computer storage medium, wherein the computer-readable storage medium stores a computer program or instructions, and when the program or instructions are executed by a processor, the processor executes the signal sending method as described in the second aspect.

[0020] In a tenth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps described in the second aspect of the embodiments of the present application. The computer program product may be a software installation package.

[0021] As can be seen, when there is a signal reception conflict, the first terminal device can prioritize receiving downlink signals from the network device that meet the preset conditions, so that it can respond to the downlink signals in a timely manner, thereby improving signal processing efficiency. When there is a signal transmission conflict, the third terminal device can prioritize sending uplink signals that meet the preset conditions, so that the receiving end of the uplink signals can respond to the uplink signals in a timely manner, thereby improving signal processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following is a brief introduction to the drawings required for describing the embodiments or prior art.

[0023] Figure 1 This is a system architecture diagram of a communication system provided by an embodiment of the present application;

[0024] Figure 2 This is an example diagram of a signal receiving method provided in an embodiment of the present application;

[0025] Figure 3 This is an example diagram of a signal sending method provided in an embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0027] Figure 5 This is a structural diagram of another terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0029] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR-U system, MIMO system, Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next generation communication system or other communication systems, etc.

[0030] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0031] For example, the communication system 100 used in the embodiment of the present application can be as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device for communicating with a first terminal device 120 (or also referred to as a communication terminal or terminal).

[0032] The communication system 100 further includes at least one first terminal device 120 located within the coverage area of the network device 110 .

[0033] The communication system 100 further includes a second terminal device 130 , and the first terminal device 120 and the second terminal device 130 can perform D2D communication, M2M communication, MTC, or V2V communication, etc.

[0034] Figure 1 A communication system 100 is shown as an example. The communication system 100 includes a network device 110, a first terminal device 120, and a second terminal device 130. The first terminal device 120 and the network device 110 can be connected wirelessly or by wire. The first terminal device 120 can receive downlink signals sent by the network device 110 via a downlink, and can also send uplink signals to the network device 110 via an uplink. The first terminal device 120 can receive sidelink signals sent by the second terminal device 130 via a sidelink, and can also send sidelink signals to the second terminal device 130 via a sidelink.

[0035] In an embodiment of the present application, a network device may provide communication coverage for a specific geographical area and may communicate with terminal devices located within the coverage area. Optionally, the network device may be an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future evolved communication system, etc.

[0036] In embodiments of the present application, a terminal device may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal device may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved communication system, etc.

[0037] Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0038] Optionally, the communication system 100 may include multiple network devices and each network device may include one or more terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0039] Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0040] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0041] In a traditional communication system, if a conflict occurs when a terminal device receives a downlink signal and a sidelink signal, how the terminal device resolves the conflict is a technical problem that urgently needs to be solved.

[0042] In response to the above problems, the present application provides the following embodiments.

[0043] See also Figure 2 , Figure 2 A signal receiving method provided in an embodiment of the present application is applied to the above-mentioned example communication system, and the method includes:

[0044] S201, the network device sends a downlink signal to the first terminal device.

[0045] In one implementation, if there is no side link signal from other terminal devices on the time-frequency domain resources where the first terminal device receives the downlink signal from the network device, then the first terminal device can directly receive the downlink signal from the network device. In other words, if the network device sends a downlink signal to the first terminal device, then the first terminal device can determine the time-frequency domain resources for receiving the downlink signal. If there is no side link signal from other terminal devices on the time-frequency domain resources, it means that there is no signal reception conflict, then the first terminal device does not need to determine whether the downlink signal meets the preset conditions, but directly receives the downlink signal. Among them, the other terminal device can be a device that establishes a side link connection with the first terminal device. For example, the other terminal device can conduct D2D communication, M2M communication, MTC, or V2V communication with the first terminal device through the side link connection. Exemplarily, the other terminal device can be the second terminal device in the embodiment of the present application.

[0046] S202: The second terminal device sends a sidelink signal to the first terminal device.

[0047] The second terminal device may send a sidelink signal to the first terminal device via the sidelink connection established between the second terminal device and the first terminal device. For example, the second terminal device may perform D2D communication, M2M communication, MTC, or V2V communication with the first terminal device via the sidelink connection.

[0048] S203, the first terminal device preferentially receives a downlink signal from the network device that meets preset conditions.

[0049] For example, if the network device sends a downlink signal to the first terminal device and the second terminal device sends a side link signal to the first terminal device, the first terminal device can detect whether the downlink signal meets the preset conditions. If the downlink signal meets the preset conditions, the first terminal device will preferentially receive the downlink signal.

[0050] In one implementation, if there is a sidelink signal from the second terminal device that overlaps with the downlink signal, the first terminal device receives the downlink signal from the network device that meets the preset conditions. In other words, if there is a sidelink signal from the second terminal device that overlaps with the downlink signal, the first terminal device preferentially receives the downlink signal from the network device that meets the preset conditions.

[0051] The sidelink signal from the second terminal device that overlaps with the downlink signal can be understood as: the downlink signal and the sidelink signal overlap in the time domain, or the downlink signal and the sidelink signal overlap in the frequency domain, or the downlink signal and the sidelink signal overlap in the time-frequency domain. The downlink signal and the sidelink signal overlap in the time-frequency domain, that is, the downlink signal and the sidelink signal overlap not only in the time domain, but also in the frequency domain.

[0052] In one implementation, if there is a sidelink signal from the second terminal device and the first terminal device does not have the ability to receive both the downlink signal and the sidelink signal in the same time period, the first terminal device receives the downlink signal from the network device. In other words, if there is a sidelink signal from the second terminal device and the first terminal device does not have the ability to receive both the downlink signal and the sidelink signal in the same time period, the first terminal device preferentially receives the downlink signal from the network device.

[0053] For example, the first terminal device can detect whether the first terminal device is capable of receiving a downlink signal and a sidelink signal simultaneously. If the first terminal device is capable of receiving a downlink signal and a sidelink signal simultaneously, then the first terminal device does not need to detect whether the downlink signal from the network device meets the preset conditions, nor does it need to detect whether there is a sidelink signal from the second terminal device, and there is no need to detect whether the sidelink signal from the second terminal device and the downlink signal from the first terminal device overlap. Instead, the first terminal device directly receives the downlink signal from the network device and / or the sidelink signal from the second terminal device.

[0054] If the capabilities of the first terminal device are limited, for example, the first terminal device is unable to simultaneously receive downlink signals and sidelink signals, then upon detecting the presence of a sidelink signal from the second terminal device, the first terminal device will also detect whether there is a downlink signal from the network device that meets the preset conditions. If there is a downlink signal from the network device that meets the preset conditions, the first terminal device will prioritize receiving the downlink signal from the network device that meets the preset conditions. If there is no downlink signal from the network device that meets the preset conditions, the first terminal device may receive the sidelink signal from the second terminal device. If the capabilities of the first terminal device are limited, and the first terminal device detects the presence of a downlink signal from the network device that meets the preset conditions, then regardless of whether there is a sidelink signal from the second terminal device, the first terminal device will prioritize receiving the downlink signal from the network device that meets the preset conditions.

[0055] In an embodiment of the present application, the first terminal device preferentially receives a downlink signal from the network device that meets preset conditions so as to respond to the downlink signal in a timely manner, thereby improving signal processing efficiency.

[0056] based on Figure 2 The flowchart of the signal receiving method shown in the figure, the embodiment of the present application specifically describes the downlink signal that meets the preset conditions.

[0057] The downlink signal meeting the preset condition may include a Master Information Block (MIB) message.

[0058] In this embodiment, when the first terminal device performs time and frequency synchronization with a certain cell, it needs to obtain a synchronization signal and a PBCH block (SSB). The SSB may include a synchronization channel and an MIB message. After the first terminal device obtains the MIB message, the first terminal device can determine the time and frequency domain position and repetition pattern of the MIB in the above-mentioned cell. Therefore, the first terminal device has a higher requirement for the reception delay of the MIB message, that is, the smaller the reception delay of the MIB message received by the first terminal device, the higher the efficiency of the time and frequency synchronization between the first terminal device and the above-mentioned cell. In other words, the sooner the first terminal device obtains the MIB message, the sooner it can synchronize time and frequency with the above-mentioned cell. Exemplarily, the first terminal device can obtain a system information block (SIB) 1, and SIB1 may include information indicating the SSB actually sent by the network device. The first terminal device can determine the specific time and frequency domain position of the MIB message based on this information.

[0059] In this embodiment, when the first terminal device receives the MIB message at the determined time-frequency domain position of the MIB message, if there is a side link signal from the second terminal device, the first terminal device can directly ignore the reception of the side link signal, that is, give priority to receiving the MIB message.

[0060] based on Figure 2 The flowchart of the signal receiving method shown in the figure, the embodiment of the present application specifically describes the downlink signal that meets the preset conditions.

[0061] The downlink signal meeting the preset condition may include a physical downlink control channel (Physical Downlink Control Channel, PDCCH).

[0062] In this embodiment, PDCCH is a companion control channel when receiving other channels in addition to the shared channel of MIB and pre-configured resources. That is, the first terminal device must receive the PDCCH channel before it can further decode the PDCCH, determine the other channels pointed to by the PDCCH, and then receive other channels from the network device. Exemplarily, the other channels can be the Physical Downlink Shared Channel (PDSCH).

[0063] In this embodiment, when the first terminal device attempts to receive the PDCCH, if there is a side link signal from the second terminal device, the first terminal device may directly ignore the reception of the side link signal, that is, give priority to receiving the PDCCH.

[0064] based on Figure 2 The flowchart of the signal receiving method shown in the figure, the embodiment of the present application specifically describes the downlink signal that meets the preset conditions.

[0065] The downlink signal meeting the preset condition may include: a PDSCH indicated by a PDCCH scrambled by a Radio Network Temporary Identity (RNTI).

[0066] In one implementation, the PDSCH may be a channel indicated by a PDCCH scrambled by a system information-radio network temporary identifier SI-RNTI, and the PDSCH carries SIB 1.

[0067] In this embodiment, the first terminal device can obtain the PDCCH configuration information required for receiving SIB1 through the MIB when initially accessing. During switching, the first terminal device can also obtain the PDCCH configuration information required for receiving SIB1 through a dedicated channel. After obtaining the PDCCH configuration information required for receiving SIB1, the first terminal device can attempt to receive the SIB1 message convolved with SI-RNTI on the PDCCH corresponding to the PDCCH configuration information. Based on this, when the first terminal device is receiving the SIB1 message, if there is a side link signal from the second terminal device, the first terminal device can directly ignore the reception of the side link signal, that is, give priority to receiving SIB1.

[0068] In one implementation, the PDSCH may be a channel indicated by a PDCCH scrambled by the SI-RNTI, the search space of the PDCCH is a search space for other system messages, and the PDSCH carries other system messages.

[0069] In this embodiment, the PDCCH configuration information may include a search space for other system messages. After the first terminal device determines the search space for other system messages through SIB1 or dedicated signaling, it can receive the system message convolved with the SI-RNTI on the PDCCH in the search space for other system messages. Based on this, when the first terminal device is receiving other system messages, if there is a sidelink signal from the second terminal device, the first terminal device can directly ignore the reception of the sidelink signal, that is, give priority to receiving other system messages.

[0070] In one implementation, the PDSCH may be a channel indicated by a PDCCH scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI), a search space of the PDCCH is a search space for paging messages, and the PDSCH carries the paging message.

[0071] The paging message may include a short message for system information update.

[0072] In this embodiment, the PDCCH configuration information may include a search space for paging messages. After the first terminal device determines the search space for other system messages through SIB1 or dedicated signaling, it can receive the system message convolved with the P-RNTI on the PDCCH in the search space for paging messages. Based on this, when the first terminal device is receiving a paging message, if there is a sidelink signal from the second terminal device, the first terminal device can directly ignore the reception of the sidelink signal, that is, give priority to receiving the paging message.

[0073] In one implementation, the PDSCH may be a channel indicated by the PDCCH scrambled by the random access-radio network temporary identifier RA-RNTI, and the PDSCH carries the second message, which is a message from the network device during the 4-step random access process. The second message is generated by the network device after receiving the first message sent from the first terminal device, and the first message may be a preamble.

[0074] In this embodiment, when a first terminal device initiates a four-step random access, after sending the preamble (i.e., the first message), the first terminal device waits for the second message from the network device. The RA-RNTI is convolved with the PDCCH used to send the second message, and the first terminal device determines the time period (i.e., the receive window for the second message) in which to receive the second message. Based on this, when the first terminal device receives the second message, if there is a sidelink signal from the second terminal device, the first terminal device can directly ignore the reception of the sidelink signal, i.e., prioritize receiving the second message.

[0075] In one implementation, the PDSCH may be a channel indicated by a PDCCH scrambled by a temporary-radio network temporary identifier TEMP-RNTI or a cell-radio network temporary identifier C-RNTI, wherein the PDSCH carries a fourth message, the fourth message being a message from the network device in a four-step random access process, the fourth message being generated by the network device upon receiving the third message from the first terminal device, and the third message being generated by the first terminal device upon receiving the second message from the network device. The second message is generated by the network device upon receiving the first message sent from the first terminal device, and the first message may be a preamble.

[0076] In this embodiment, after the first terminal device sends the third message to the network device, depending on the actual reason for initiating the Random Access Channel (RACH) process, the first terminal device will attempt to receive the PDCCH convolved with the TEMP-RNTI or C-RNTI when receiving the fourth message. Based on this, when the first terminal device receives the fourth message, if there is a sidelink signal from the second terminal device, the first terminal device can directly ignore the reception of the sidelink signal, that is, give priority to receiving the fourth message.

[0077] Optionally, the fourth message may include a downlink common control channel (Common Control Channel, CCCH) and / or a downlink dedicated control channel (Dedicated Control CHannel, DCCH).

[0078] Optionally, in the case that the fourth message includes a downlink CCCH, the fourth message may include a radio resource control (RRC) connection establishment Setup message and a radio resource control connection disconnection RRC Reject message.

[0079] Optionally, when the fourth message includes a downlink DCCH, the fourth message may include a radio resource control connection resumption RRC Resume message and a radio resource control connection reestablishment RRC Restablishment message.

[0080] In other words, the fourth message in the above RACH process may contain a downlink CCCH or a downlink DCCH. If the fourth message contains a DCCH, then the fourth message may contain an RRCResume message and an RRCRestablishment message. If the fourth message contains a CCCH, then the fourth message may contain an RRCSetup message and an RRCReject message.

[0081] In one implementation, the PDSCH may be a channel indicated by the PDCCH scrambled by the message B-Radio Network Temporary Identifier MSGB-RNTI, and the PDSCH carries message B, which is a message from the network device during the 2-step random access process, and the message B is generated by the network device after receiving the message A from the first terminal device.

[0082] In this embodiment, when the first terminal device initiates a two-step random access, the first terminal device first sends message A and then prepares to receive message B from the network device in the receiving window. The network device convolves the MSGB-RNTI on the PDCCH on which it sends message B. Based on this, when the first terminal device is receiving message B, if there is a sidelink signal from the second terminal device, the first terminal device can directly ignore the reception of the sidelink signal, that is, give priority to receiving message B. Message A is the first message in the two-step random access process, and message B is the second message in the two-step random access process.

[0083] Optionally, message B may include downlink CCCH and / or downlink DCCH.

[0084] Optionally, when the message B includes a downlink CCCH, the message B may include an RRC Setup message and an RRC Reect message.

[0085] Optionally, when the message B includes a downlink DCCH, the message B may include an RRC Resume message and an RRC Restablishment message.

[0086] In other words, Message B in the above RACH process may include a downlink CCCH or a downlink DCCH. If Message B includes a DCCH, then Message B may include an RRCResume message and an RRCRestablishment message. If Message B includes a CCCH, then Message B may include an RRC Setup message and an RRC Reject message.

[0087] based on Figure 2 The flowchart of the signal receiving method shown in the figure, the embodiment of the present application specifically describes the downlink signal that meets the preset conditions.

[0088] The downlink signal meeting the preset condition may include: a PDSCH indicated by priority indication information in downlink control information (Downlink Control Information, DCI), where the DCI is carried on a PDCCH.

[0089] In this embodiment, when the first terminal device receives the PDCCH channel, if there is a priority tag in the DCI carried by the PDCCH. This priority tag can be used in DCI format 1-2, DCI format 0-1, DCI format 0-2 and DCI format 1-1. Based on this, when the first terminal device receives the PDCCH containing the priority tag, if there is a side link signal from the second terminal device, the first terminal device can directly ignore the reception of the side link signal, that is, give priority to receiving any downlink channel pointed to by the priority tag in the PDCCH.

[0090] For example, the communication system 100 used in the embodiment of the present application can be as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device for communicating with a third terminal device 120 (or referred to as a communication terminal or terminal).

[0091] The communication system 100 further includes at least one third terminal device 120 located within the coverage area of the network device 110 .

[0092] The communication system 100 further includes a fourth terminal device 130 , and the third terminal device 120 and the fourth terminal device 130 can perform D2D communication, M2M communication, MTC, or V2V communication, etc.

[0093] Figure 1 A communication system 100 is shown as an example. The communication system 100 includes a network device 110, a third terminal device 120, and a fourth terminal device 130. The third terminal device 120 and the network device 110 can be connected wirelessly or by wire. The third terminal device 120 can send uplink signals to the network device 110 via an uplink, and the third terminal device 120 can also receive downlink signals sent by the network device 110 via a downlink. The third terminal device 120 can send sidelink signals to the fourth terminal device 130 via a sidelink, and the third terminal device 120 can also receive sidelink signals sent by the fourth terminal device 130 via a sidelink.

[0094] The third terminal device 120 in the embodiment of the present application can be the same terminal device as the first terminal device or the second terminal device in the above embodiment. Optionally, the third terminal device can also be a terminal device different from the first terminal device and the second terminal device. In addition, the fourth terminal device 130 can be the same terminal device as the first terminal device or the second terminal device in the above embodiment. Optionally, the fourth terminal device 130 can also be a terminal device different from the first terminal device and the second terminal device.

[0095] In a traditional communication system, if a conflict occurs when a terminal device sends an uplink signal and a sidelink signal, how the terminal device resolves the conflict is a technical problem that urgently needs to be solved.

[0096] In response to the above problems, the present application provides the following embodiments.

[0097] See also Figure 3 , Figure 3 A signal receiving method provided in an embodiment of the present application is applied to the above-mentioned example communication system, and the method includes:

[0098] S301: The third terminal device generates an uplink signal to be sent.

[0099] In one implementation, if there is no side link signal to be sent to other terminal devices on the time-frequency domain resources of the uplink signal sent by the third terminal device to the network device, then the third terminal device can directly send the uplink signal to the network device. In other words, if the third terminal device generates an uplink signal to be sent, then the third terminal device can determine the time-frequency domain resources for sending the uplink signal. If there is no side link signal to be sent to other terminal devices on the time-frequency domain resources, it means that there is no signal transmission conflict, then the third terminal device does not need to determine whether the uplink signal meets the preset conditions, but directly sends the uplink signal to the network device. Among them, the other terminal device can be a device that establishes a side link connection with the third terminal device. For example, the other terminal device can conduct D2D communication, M2M communication, MTC, or V2V communication with the third terminal device through the side link connection. Exemplarily, the other terminal device can be the fourth terminal device in the embodiment of the present application.

[0100] S302: The third terminal device generates a side link signal to be sent.

[0101] The third terminal device may send a sidelink signal to the fourth terminal device via the sidelink connection established between the third terminal device and the fourth terminal device. For example, the third terminal device may perform D2D communication, M2M communication, MTC, or V2V communication with the fourth terminal device via the sidelink connection.

[0102] S303: The third terminal device preferentially sends an uplink signal that meets preset conditions.

[0103] For example, if there is an uplink signal to be sent to the network device and a side link signal to be sent to the fourth terminal device, the third terminal device can detect whether the uplink signal meets the preset conditions. If the uplink signal meets the preset conditions, the third terminal device will give priority to sending the uplink signal that meets the preset conditions.

[0104] In one implementation, if a to-be-sent uplink signal that meets the preset conditions overlaps with a to-be-sent sidelink signal, the third terminal device may transmit the uplink signal to the network device. In other words, if a to-be-sent sidelink signal to the fourth terminal device overlaps with the to-be-sent uplink signal that meets the preset conditions, the third terminal device prioritizes transmitting the to-be-sent uplink signal that meets the preset conditions.

[0105] In one implementation, if an uplink signal that meets the preset conditions and a sidelink signal to be sent overlap, and the third terminal device does not have the ability to send the uplink signal and the sidelink signal in the same time period, the third terminal device may send the uplink signal to the network device. In other words, if there is a sidelink signal to be sent to the fourth terminal device that overlaps with the uplink signal that meets the preset conditions, and the third terminal device does not have the ability to send the uplink signal and the sidelink signal in the same time period, the third terminal device may give priority to sending the uplink signal.

[0106] For example, the third terminal device can detect whether the third terminal device is capable of sending an uplink signal and a side link signal at the same time. If the third terminal device is capable of sending an uplink signal and a side link signal at the same time, then the third terminal device does not need to detect whether the uplink signal to be sent to the network device meets the preset conditions, nor does it need to detect whether there is a side link signal to be sent to the fourth terminal device, and there is no need to detect whether the side link signal to be sent to the fourth terminal device and the uplink signal to be sent to the network device overlap. Instead, the third terminal device directly sends an uplink signal to the network device and / or sends a side link signal to the fourth terminal device.

[0107] If the capabilities of the third terminal device are limited, for example, the third terminal device is unable to simultaneously transmit an uplink signal and a sidelink signal, then upon detecting the presence of a sidelink signal to be transmitted to the fourth terminal device, the third terminal device will also detect whether there is an uplink signal to be transmitted to the network device that meets the preset conditions. If there is an uplink signal to be transmitted to the network device that meets the preset conditions, the third terminal device will give priority to transmitting the uplink signal; if there is no uplink signal to be transmitted to the network device that meets the preset conditions, the third terminal device may transmit the aforementioned sidelink signal. If the capabilities of the third terminal device are limited, and the third terminal device detects the presence of an uplink signal to be transmitted to the network device that meets the preset conditions, then regardless of whether there is a sidelink signal to be transmitted to the fourth terminal device, the third terminal device will give priority to transmitting the uplink signal to the network device that meets the preset conditions.

[0108] In one implementation, the overlapping of the uplink signal to be transmitted that meets the preset conditions and the sidelink signal to be transmitted can be understood as: the uplink signal to be transmitted that meets the preset conditions and the sidelink signal to be transmitted overlap in the time domain, or the uplink signal to be transmitted that meets the preset conditions and the sidelink signal to be transmitted overlap in the frequency domain, or the uplink signal to be transmitted that meets the preset conditions and the sidelink signal to be transmitted overlap in the time-frequency domain. The uplink signal and the sidelink signal overlap in the time-frequency domain, that is, the uplink signal and the sidelink signal overlap not only in the time domain, but also in the frequency domain.

[0109] In one implementation, the uplink signal that meets the preset conditions may include message A, where message A is the first message sent by the third terminal device to the network device in the 2-step random access process.

[0110] In one implementation, the message A may include a preamble and a physical uplink shared channel (PUSCH). That is, the message A may consist of two parts, one part being the preamble and the other part being the PUSCH.

[0111] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the interaction between various network elements. It can be understood that in order to realize the above functions, the terminal device includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this document, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software-driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0112] The embodiment of the present application can divide the terminal device into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods.

[0113] In the case of an integrated unit, Figure 4 A block diagram showing a possible functional unit composition of the terminal device involved in the above embodiment is shown, and the terminal device includes:

[0114] The communication unit 401 is configured to preferentially receive downlink signals from network devices that meet preset conditions.

[0115] The processing unit 402 may be a processor or a controller, and the communication unit 401 may be a transceiver, a transceiver circuit, a radio frequency chip, etc.

[0116] In one implementation, the communication unit 401 preferentially receives downlink signals from network devices that meet preset conditions, including:

[0117] If there is a side link signal from the second terminal device that overlaps with the downlink signal, the downlink signal from the network device is received.

[0118] In one implementation, the downlink signal and the sidelink signal overlap in the time domain, or the downlink signal and the sidelink signal overlap in the frequency domain, or the downlink signal and the sidelink signal overlap in the time-frequency domain.

[0119] In one implementation, the communication unit 401 preferentially receives downlink signals from network devices that meet preset conditions, including:

[0120] If there is a sidelink signal from the second terminal device, and the terminal device does not have the ability to receive the downlink signal and the sidelink signal in the same time period, the downlink signal from the network device is received.

[0121] In one implementation, the downlink signal that meets the preset condition includes an MIB message.

[0122] In one implementation, the downlink signal that meets the preset condition includes a PDCCH.

[0123] In one implementation, the downlink signal meeting the preset condition includes: a PDSCH indicated by a PDCCH scrambled by an RNTI.

[0124] In one implementation, the PDSCH is a channel indicated by a PDCCH scrambled by an SI-RNTI, the search space of the PDCCH is a search space used for other system messages, and the PDSCH carries other system messages.

[0125] In one implementation, the PDSCH is a channel indicated by a PDCCH scrambled by an SI-RNTI, and the PDSCH carries a system information block SIB1.

[0126] In one implementation, the PDSCH is a channel indicated by a PDCCH scrambled by a P-RNTI, a search space of the PDCCH is a search space used for a paging message, and the PDSCH carries the paging message.

[0127] In one implementation, the paging message includes a short message for system information update.

[0128] In one implementation, the PDSCH is a channel indicated by the PDCCH encrypted by RA-RNTI, and the PDSCH carries a second message, which is a message from the network device during the 4-step random access process. The second message is generated by the network device after receiving the first message sent from the terminal device, and the first message is a preamble code.

[0129] In one implementation, the PDSCH is a channel indicated by a PDCCH encrypted by TEMP-RNTI or C-RNTI, and the PDSCH carries a fourth message, which is a message from the network device in a 4-step random access process, and is generated by the network device upon receiving the third message from the terminal device, and the third message is generated by the terminal device upon receiving the second message from the network device.

[0130] In one implementation, the PDSCH is a channel indicated by the PDCCH encrypted by MSGB-RNTI, and the PDSCH carries message B, which is a message from the network device during a 2-step random access process. The message B is generated by the network device after receiving message A from the terminal device.

[0131] In one implementation, the fourth message includes a downlink CCCH and / or a downlink DCCH, and the message B includes a downlink CCCH and / or a downlink DCCH.

[0132] In one implementation, when the fourth message includes a downlink CCCH, the fourth message includes an RRC Setup message and an RRC Reject message; when the message B includes a downlink CCCH, the message B includes an RRC Setup message and an RRC Reject message.

[0133] In one implementation, when the fourth message includes a downlink DCCH, the fourth message includes an RRC Resume message and an RRC Restablishment message; when the message B includes a downlink DCCH, the message B includes an RRC Resume message and an RRC Restablishment message.

[0134] In one implementation, the downlink signal meeting the preset condition includes: a PDSCH indicated by priority indication information in a DCI, and the DCI is carried on a PDCCH.

[0135] When the processing unit 402 is a processor and the communication unit 401 is a transceiver, the terminal device involved in the embodiment of the present application can be Figure 5 The terminal device shown.

[0136] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute some or all of the steps described for the first terminal device in the above method embodiment.

[0137] The present application also provides a computer program product, including a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a computer to execute some or all of the steps described for the first terminal device in the method embodiment above. The computer program product may be a software installation package.

[0138] In the case of an integrated unit, Figure 4 A block diagram showing a possible functional unit composition of the terminal device involved in the above embodiment is shown, and the terminal device includes:

[0139] The communication unit 401 is configured to preferentially send downlink signals that meet preset conditions.

[0140] The processing unit 402 may be a processor or a controller, and the communication unit 401 may be a transceiver, a transceiver circuit, a radio frequency chip, etc.

[0141] In one implementation, the communication unit 401 preferentially sends uplink signals that meet a preset condition, including:

[0142] If the uplink signal to be sent that meets the preset condition overlaps with the sidelink signal, the uplink signal is sent to the network device.

[0143] In one implementation, the communication unit 401 preferentially sends uplink signals that meet a preset condition, including:

[0144] If the uplink signal and the side link signal to be sent that meet the preset conditions overlap, and the terminal device does not have the ability to send the uplink signal and the side link signal in the same time period, the uplink signal is sent to the network device.

[0145] In one implementation, the uplink signal and the sidelink signal overlap in the time domain, or the uplink signal and the sidelink signal overlap in the frequency domain, or the uplink signal and the sidelink signal overlap in the time-frequency domain.

[0146] In one implementation, the uplink signal meeting the preset condition includes message A, and the message A is the first message sent by the communication unit 401 to the network device in the two-step random access process.

[0147] In one implementation, the message A includes a preamble and a PUSCH.

[0148] When the processing unit 401 is a processor and the communication unit 401 is a transceiver, the terminal device involved in the embodiment of the present application can be Figure 5 The terminal device shown.

[0149] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute some or all of the steps described by the third terminal device in the above method embodiment.

[0150] The present application also provides a computer program product, including a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a computer to execute some or all of the steps described for the third terminal device in the method embodiment above. The computer program product may be a software installation package.

[0151] The steps of the method or algorithm described in the embodiments of the present application can be implemented in hardware or by executing software instructions by a processor. The software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disks, mobile hard disks, read-only compact disks (CD-ROMs), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium can also exist as discrete components in an access network device, a target network device, or a core network device.

[0152] Those skilled in the art will appreciate that, in one or more of the above examples, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiments of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can 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 can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0153] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above description is only a specific implementation method of the embodiments of the present application and is not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A signal receiving method, characterized in that: include: If there is a sidelink signal from the second terminal device that overlaps with the downlink signal from the network device, the first terminal device detects whether the first terminal device has the ability to receive the downlink signal and the sidelink signal in the same time period; If the first terminal device has the ability to receive a downlink signal and a sidelink signal in the same time period, the first terminal device receives the downlink signal from the network device and the sidelink signal from the second terminal device; If the first terminal device does not have the ability to receive a downlink signal and a sidelink signal in the same time period, the first terminal device detects whether the downlink signal from the network device meets a preset condition; If the downlink signal from the network device does not meet a preset condition, the first terminal device receives the sidelink signal from the second terminal device; If the downlink signal from the network device meets a preset condition, the first terminal device receives the downlink signal from the network device; The downlink signal meeting the preset conditions includes a physical downlink shared channel PDSCH indicated by a PDCCH scrambled by a radio network temporary identifier RNTI; The PDSCH is a channel indicated by the PDCCH scrambled by the random access-radio network temporary identifier RA-RNTI, and the PDSCH carries a second message, the second message is a message from the network device during the four-step random access process, and the second message is generated by the network device after receiving the first message sent by the first terminal device, and the first message is a preamble code; Alternatively, the PDSCH is a channel indicated by a PDCCH scrambled by a temporary-radio network temporary identifier TEMP-RNTI or a cell-radio network temporary identifier C-RNTI, and the PDSCH carries a fourth message, the fourth message being a message from the network device in a four-step random access process, the fourth message being generated by the network device upon receiving the third message from the first terminal device, and the third message being generated by the first terminal device upon receiving the second message from the network device; Alternatively, the PDSCH is a channel indicated by the PDCCH encrypted by MSGB-RNTI, the PDSCH carries message B, the message B is a message from the network device during a 2-step random access process, and the message B is generated by the network device after receiving message A from the first terminal device.

2. The method according to claim 1, characterized in that The downlink signal and the sidelink signal overlap in the time domain, or the downlink signal and the sidelink signal overlap in the frequency domain, or the downlink signal and the sidelink signal overlap in the time-frequency domain.

3. The method according to claim 1, characterized in that The downlink signal that meets the preset conditions also includes one or more of the following: Main system module MIB messages; Physical downlink control channel PDCCH; The PDSCH indicated by the priority indication information in the downlink control information DCI, wherein the DCI is carried on the PDCCH.

4. The method according to claim 1, wherein The fourth message includes a downlink common control channel CCCH and / or a downlink dedicated control channel DCCH.

5. The method according to claim 4, characterized in that In the case that the fourth message includes the downlink CCCH, the fourth message includes a radio resource control connection establishment RRC Setup message and a radio resource control connection disconnection RRC Reject message.

6. The method according to claim 4, characterized in that In the case that the fourth message includes the downlink DCCH, the fourth message includes a radio resource control connection resumption RRC Resume message and a radio resource control connection reestablishment RRC Restablishment message.

7. The method according to claim 1, characterized in that The message B includes downlink CCCH and / or downlink DCCH.

8. The method according to claim 7, characterized in that In the case where the message B includes a downlink CCCH, the message B includes an RRC Setup message and an RRC Reject message.

9. The method according to claim 7, characterized in that In the case where the message B includes a downlink DCCH, the message B includes an RRC Resume message and an RRC Restablishment message.

10. A terminal device, characterized in that: The terminal device includes a unit for implementing the signal receiving method according to any one of claims 1 to 9.

11. A terminal device, characterized in that: The terminal device includes a processor and a memory, wherein the processor is coupled to the memory, and is characterized in that: The memory is used to store instructions; The processor is configured to call instructions in the memory and cause the terminal device to execute, if there is a sidelink signal from a second terminal device that overlaps with a downlink signal from a network device, detecting whether the terminal device has the ability to receive the downlink signal and the sidelink signal in the same time period; if the terminal device has the ability to receive the downlink signal and the sidelink signal in the same time period, receiving the downlink signal from the network device and the sidelink signal from the second terminal device; if the terminal device does not have the ability to receive the downlink signal and the sidelink signal in the same time period, detecting whether the downlink signal from the network device meets a preset condition; if the downlink signal from the network device does not meet the preset condition, receiving the sidelink signal from the second terminal device; if the downlink signal from the network device meets the preset condition, receiving the downlink signal from the network device; The downlink signal meeting the preset conditions includes a physical downlink shared channel PDSCH indicated by a PDCCH scrambled by a radio network temporary identifier RNTI; The PDSCH is a channel indicated by the PDCCH scrambled by the random access-radio network temporary identifier RA-RNTI, and the PDSCH carries a second message, the second message is a message from the network device during the four-step random access process, and the second message is generated by the network device after receiving the first message sent by the terminal device, and the first message is a preamble code; Alternatively, the PDSCH is a channel indicated by a PDCCH scrambled by a temporary-radio network temporary identifier TEMP-RNTI or a cell-radio network temporary identifier C-RNTI, and the PDSCH carries a fourth message, the fourth message being a message from the network device in a four-step random access process, the fourth message being generated by the network device upon receiving the third message from the terminal device, and the third message being generated by the terminal device upon receiving the second message from the network device; Alternatively, the PDSCH is a channel indicated by the PDCCH encrypted by MSGB-RNTI, the PDSCH carries message B, the message B is a message from the network device during the 2-step random access process, and the message B is generated by the network device after receiving message A from the terminal device.

12. The terminal device according to claim 11, characterized in that The downlink signal and the sidelink signal overlap in the time domain, or the downlink signal and the sidelink signal overlap in the frequency domain, or the downlink signal and the sidelink signal overlap in the time-frequency domain.

13. The terminal device according to claim 11, characterized in that The downlink signal that meets the preset conditions also includes one or more of the following: Main system module MIB messages; Physical downlink control channel PDCCH; The PDSCH indicated by the priority indication information in the downlink control information DCI, wherein the DCI is carried on the PDCCH.

14. The terminal device according to claim 11, characterized in that The fourth message includes a downlink common control channel CCCH and / or a downlink dedicated control channel DCCH.

15. The terminal device according to claim 14, characterized in that In the case that the fourth message includes the downlink CCCH, the fourth message includes a radio resource control connection establishment RRC Setup message and a radio resource control connection disconnection RRC Reject message.

16. The terminal device according to claim 14, characterized in that In the case that the fourth message includes the downlink DCCH, the fourth message includes a radio resource control connection resumption RRC Resume message and a radio resource control connection reestablishment RRC Restablishment message.

17. The terminal device according to claim 11, characterized in that The message B includes downlink CCCH and / or downlink DCCH.

18. The terminal device according to claim 17, characterized in that In the case where the message B includes a downlink CCCH, the message B includes an RRC Setup message and an RRC Reject message.

19. The terminal device according to claim 17, characterized in that In the case where the message B includes a downlink DCCH, the message B includes an RRC Resume message and an RRC Restablishment message.

20. A computer storage medium, characterized in that The computer storage medium stores a computer program or instruction, and when the program or instruction is executed by a processor, the processor is caused to execute the signal receiving method according to any one of claims 1 to 9.

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