Direct link transmission method and device and storage medium

Abstract

The invention provides a direct link transmission method and device and a storage medium, and relates to the technical field of communication. The method provided by the invention comprises the following steps: a terminal acquires power distribution information of a physical direct link feedback channel (PSFCH); the terminal sends a PSFCH carrying feedback information according to the power distribution information; wherein the power distribution information comprises at least one of the following items: first information, and the first information is power distribution information of a physical resource block (PRB) in the PSFCH; and the second information is the power distribution information of the PSFCH of different carriers at the same moment. According to the scheme of the invention, SL feedback in a carrier aggregation scene is realized.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a direct link transmission method, device and storage medium. Background Art

[0002] Carrier Aggregation (CA) is a technology that integrates wireless channel resources within or between frequency bands to increase the user's data transmission rate and reduce latency. CA technology can aggregate multiple component carriers (CCs) together to achieve a larger transmission bandwidth, effectively improving the uplink and downlink transmission rates. The terminal can use up to several carriers for uplink and downlink transmission at the same time based on its own capabilities.

[0003] However, the existing CA technology is mainly aimed at air interface transmission. With the in-depth research on the New Radio Access Technology (NR) SideLink (SL), how the terminal can feedback SL to adapt to the requirements of carrier aggregation scenarios has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The purpose of the present application is to provide a through link transmission method, device and storage medium, which can realize SL feedback in carrier aggregation scenarios.

[0005] In order to achieve the above object, an embodiment of the present application provides a through link transmission method, including:

[0006] The terminal obtains power allocation information of the physical direct link feedback channel PSFCH;

[0007] The terminal sends a PSFCH carrying feedback information according to the power allocation information;

[0008] The power allocation information includes at least one of the following:

[0009] First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

[0010] The second information is the power allocation information of the PSFCH of different carriers at the same time.

[0011] Optionally, the terminal sending a PSFCH carrying feedback information according to the power allocation information includes:

[0012] The terminal determines the transmit power of the PSFCH according to the power allocation information;

[0013] The terminal sends the PSFCH according to the transmit power.

[0014] Optionally, the terminal determines, according to the power allocation information, the transmit power of the PSFCH, including at least one of the following:

[0015] The terminal determines a first transmit power of a PRB in the PSFCH based on the first information; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

[0016] Determining, by the terminal, a second transmit power of the PSFCH based on the second information;

[0017] The terminal adjusts the first transmit power based on the second transmit power.

[0018] Optionally, at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

[0019] Optionally, the PSFCH is a PSFCH on at least one adjacent component carrier; or,

[0020] The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

[0021] Optionally, the terminal acquires power allocation information of the PSFCH, including at least one of the following:

[0022] The terminal receives the power allocation information carried by high-layer signaling;

[0023] The terminal determines the power allocation information according to a channel state;

[0024] The terminal determines the power allocation information according to the service priority.

[0025] Optionally, the channel status includes channel quality information between the terminal and the communication object.

[0026] In order to achieve the above-mentioned purpose, the embodiment of the present application further provides a direct link transmission device, including: a memory, a transceiver, and a processor: the memory is used to store program instructions; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the program instructions in the memory and perform the following operations:

[0027] Obtain power allocation information of the physical direct link feedback channel PSFCH;

[0028] The transceiver is further used to: send a PSFCH carrying feedback information according to the power allocation information;

[0029] The power allocation information includes at least one of the following:

[0030] First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

[0031] The second information is the power allocation information of the PSFCH of different carriers at the same time.

[0032] Optionally, the processor is further configured to: determine the transmit power of the PSFCH according to the power allocation information;

[0033] The transceiver is further configured to: transmit the PSFCH according to the transmit power.

[0034] Optionally, the processor is further configured to perform at least one of the following:

[0035] Based on the first information, determining a first transmit power of a PRB in the PSFCH; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

[0036] Determine a second transmit power of the PSFCH based on the second information;

[0037] The first transmit power is adjusted based on the second transmit power.

[0038] Optionally, at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

[0039] Optionally, the PSFCH is a PSFCH on at least one adjacent component carrier; or,

[0040] The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

[0041] Optionally, the processor is further configured to perform at least one of the following:

[0042] Receiving the power allocation information carried by high-level signaling;

[0043] Determine the power allocation information according to the channel state;

[0044] The power allocation information is determined according to the service priority.

[0045] Optionally, the channel status includes channel quality information between the terminal and the communication object.

[0046] In order to achieve the above object, the embodiment of the present application further provides a direct link transmission device, including:

[0047] An acquisition module, used to acquire power allocation information of a physical direct link feedback channel PSFCH;

[0048] A sending module, configured to send a PSFCH carrying feedback information according to the power allocation information;

[0049] The power allocation information includes at least one of the following:

[0050] First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

[0051] The second information is the power allocation information of the PSFCH of different carriers at the same time.

[0052] In order to achieve the above-mentioned purpose, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores program instructions, and the program instructions are used to enable the processor to execute the direct link transmission method as described above.

[0053] The above technical solution of the present application has at least the following beneficial effects:

[0054] In the above-mentioned technical scheme of the embodiment of the present application, the terminal can understand the power allocation information of the PRB in the PSFCH and one or more of the power allocation information of the PSFCH of different carriers at the same time by acquiring the power allocation information of the PSFCH, thereby sending the PSFCH carrying feedback information according to the power allocation information, thereby ensuring the stable transmission of the PSFCH carrying feedback information. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of a method according to an embodiment of the present application;

[0056] Figure 2 is a schematic diagram of an application of the first information;

[0057] Figure 3 is a schematic diagram of application of the second information;

[0058] Figure 4 A schematic diagram of centralized feedback;

[0059] Figure 5 It is a schematic diagram of independent feedback;

[0060] Figure 6 is a schematic diagram of PSFCH using adjacent component carriers;

[0061] Figure 7 A schematic diagram showing that PSFCH occupies consecutive OFDM symbols;

[0062] Figure 8 A schematic diagram showing the power allocation of different PRBs of the PSFCH of the same carrier to the higher layer;

[0063] Fig. 9 A schematic diagram of power allocation for different PRBs of PSFCH of the same carrier according to service priority;

[0064] Fig.10 Schematic diagram of the power allocation of different PRBs of PSFCH of the same carrier affected by the channel status;

[0065] Fig.11 A schematic diagram showing the power allocation of PSFCHs of different carriers at the same time for the higher layer;

[0066] Fig.12 A structural block diagram of a device according to an embodiment of the present application;

[0067] Fig.13 Schematic diagram of a module of a device according to an embodiment of the present application. DETAILED DESCRIPTION

[0068] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0069] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0070] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0071] In order to enable those skilled in the art to better understand the embodiments of the present application, the following description is first made:

[0072] 1. Carrier aggregation

[0073] In the initial Long Term Evolution (LTE) technology, the channel bandwidth sizes defined for each user include: 1.4, 3, 5, 10, 15, and 20 MHz. With the continuous development of mobile Internet technology, the demand for mobile content has shifted from text to graphics and then to short videos. The user bandwidth defined by the early LTE standard can no longer meet the growing data traffic needs of users. According to Shannon's formula, under the additive white Gaussian noise (AWGN) channel, the channel capacity C of the communication system can be expressed as:

[0074]

[0075] Where W is the channel bandwidth in Hertz (Hz); S is the signal power in Watts; and N is the noise power in Watts.

[0076] In order to pursue higher channel capacity, increasing channel bandwidth is a feasible solution, but the existing mobile communication frequency band resources are very limited. Re-dividing the existing frequency band to obtain a large bandwidth will make the previous equipment unusable. Therefore, in order to ensure compatibility with previous standards, the LTE-Advanced standard proposes a new carrier aggregation technology, which attempts to provide users with higher peak transmission rates and bandwidths of up to 100MHz by integrating multiple idle frequency band resources and allocating them to the same user based on the existing LTE standard, so as to solve the problem of limited user communication rates in LTE.

[0077] The CA principles of the NR system are basically the same as those of the LTE system, but NR has a wider bandwidth, so the carrier aggregation effect is better. Aggregating these wider spectrums allows operators to provide faster speeds.

[0078] According to the distribution positions of different component carriers in carrier aggregation, carrier aggregation can be roughly divided into three categories: intra-band contiguous carrier aggregation; intra-band non-contiguous carrier aggregation; inter-band non-contiguous carrier aggregation.

[0079] Intra-band contiguous carrier aggregation is relatively simple to implement, but it is also a carrier aggregation method with relatively stringent requirements on frequency band resources. The aggregated carrier bands must not only be adjacent, but the LTE-Advanced standard requires that the center frequency interval of the component carriers used in this type of carrier aggregation must be an integer multiple of 300kHz. Intra-band non-contiguous and inter-band non-contiguous carrier aggregation do not have such stringent requirements on frequency band resources, and there are more frequency bands to choose from, but there are more issues to consider in actual system implementation, and it is relatively more complicated.

[0080] 2. SL resource allocation

[0081] There are two main ways to allocate SL resources: one is based on network scheduling, which is called mode 1; the other is that the terminal independently selects transmission resources, which is called mode 2. The terminal may include SL terminals including mobile vehicles.

[0082] For SL-CA, the carrier aggregation process in mode 1 is uniformly scheduled by the base station, while in mode 2 it is determined by the UE capabilities at both the transmitting and receiving ends.

[0083] When the LTE / NR Uu CA process is directly introduced into the SL, there are the following disadvantages:

[0084] 1. The feedback of each component carrier is independent of each other and there is no physical sidelink feedback channel (PSFCH) power control method. Additional signaling is required to indicate the processing of each carrier's PSFCH, which increases UE power consumption and has low efficiency.

[0085] 2. The Uu CA solution is not applicable to the PSFCH channel of NR SL (especially mode 2 scenario).

[0086] The embodiments of the present application provide a through link transmission method, device and storage medium. The method and device are based on the same application concept. Since the method and device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0087] like Figure 1 As shown, a direct link transmission method provided in an embodiment of the present application includes:

[0088] Step 101: The terminal obtains power allocation information of a physical direct link feedback channel PSFCH; wherein the power allocation information includes at least one of the following:

[0089] First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

[0090] The second information is the power allocation information of the PSFCH of different carriers at the same time.

[0091] In this step, the terminal can obtain the power allocation information of the PSFCH by acquiring the power allocation information of the PSFCH, and at least one of the power allocation information of the PSFCH of different carriers at the same time.

[0092] Step 102: The terminal sends a PSFCH carrying feedback information according to the power allocation information.

[0093] Therefore, according to the above steps 101 and 102, the terminal can understand the power allocation information of the PRB in the PSFCH and one or more of the power allocation information of the PSFCH of different carriers at the same time by obtaining the power allocation information of the PSFCH, thereby sending the PSFCH carrying feedback information according to the power allocation information, thereby ensuring the stable transmission of the PSFCH carrying feedback information.

[0094] Specifically, in the SL-CA scenario, the terminal applies the method of the embodiment of the present application to send a PSFCH carrying feedback information based on the acquired power allocation information of the PSFCH.

[0095] Optionally, the first information may be a specific power value allocated to each PRB in the PSFCH, such as the power of PRB1 is A1, the power of PRB1 is A2, etc. Alternatively, the first information may be a power allocation ratio for all PRBs in the PSFCH, and the terminal needs to further determine the first transmit power of each PRB based on its own capabilities. Similarly, the second information may be a specific power value allocated to PSFCH at the same time for different carriers, or a power allocation ratio for PSFCH at the same time for different carriers, which will not be described in detail here.

[0096] Optionally, the first information may be power allocation information of PRBs of PSFCH in the same time unit (such as symbol) within one carrier. Figure 2 As shown, since there may be cross-carrier indications in SL-CA (i.e., the physical sidelink control channel (PSCCH) cross-carrier schedules the physical sidelink shared channel (PSSCH), the first information allocates power to different PRBs on the PSFCH within a carrier so that the PSFCH can be fed back to different terminals, so that the terminals can obtain feedback information even if they correspond to different path losses, service categories, etc.

[0097] Of course, the first information of different carriers may be the same or different.

[0098] Optionally, the second information may be power allocation information of PSFCH of different carriers at the same time for a component carrier belonging to a SL-CA (which may be intra-band carrier aggregation or inter-band carrier aggregation). Figure 3 As shown, two carriers (carrier 1 and carrier 2) belong to the same SL-CA component carrier, and the second information uniformly allocates the power of carrier 1 and carrier 2 to send PSFCH at the same time.

[0099] Optionally, in this embodiment, the terminal sends a PSFCH carrying feedback information according to the power allocation information, including:

[0100] The terminal determines the transmit power of the PSFCH according to the power allocation information;

[0101] The terminal sends the PSFCH according to the transmit power.

[0102] That is, after obtaining the power allocation information of the PSFCH, the terminal can further determine the transmission power of the PSFCH, and then transmit the PSFCH carrying the feedback information according to the transmission power.

[0103] Optionally, the terminal determines, according to the power allocation information, the transmit power of the PSFCH, including at least one of the following:

[0104] The terminal determines a first transmit power of a PRB in the PSFCH based on the first information; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

[0105] Determining, by the terminal, a second transmit power of the PSFCH based on the second information;

[0106] The terminal adjusts the first transmit power based on the second transmit power.

[0107] That is, when sending a PSFCH carrying feedback information, the PSFCH may be sent using a first transmission power, or the PSFCH may be sent using a second transmission power.

[0108] As an optional implementation, the first transmission power may be determined based on the first information only, and then the PSFCH is transmitted using the first transmission power. In this case, the PRBs in the PSFCH are transmitted using their respective first transmission powers.

[0109] As an optional implementation, the second transmit power may be determined based on the second information, and then the PSFCH may be transmitted using the second transmit power. At this time, the transmit power of the PRBs in the PSFCH may be evenly distributed according to the second transmit power or distributed in a default ratio.

[0110] As an optional implementation, the first transmit power can be determined based on the first information, and the second transmit power can be determined based on the second information, and then the first transmit power can be adjusted based on the second transmit power, and the PSFCH can be sent using the adjusted first transmit power. At this time, the PRBs in the PSFCH are sent using their respective adjusted first transmit powers. After the first transmit power of the PRB in a PSFCH is determined based on the first information, the expected power of the PSFCH can be obtained through each first transmit power, and the second transmit power allocated to the PSFCH can be determined based on the second information. In this way, when the expected power and the second transmit power are different, the first transmit power will be adjusted based on the second transmit power, such as adjusting the first transmit power of the PRB in proportion.

[0111] Of course, in this embodiment, since the transmission power of the terminal at the same time is limited, the total transmission power of all PSFCHs sent by the terminal at the same time shall not exceed the maximum power P max,PSFCH The terminal needs to reduce power consumption as much as possible while ensuring communication quality, and perform the same power scheduling on the transmission power of all PSFCHs sent at the same time based on the power allocation ratio indicated by the power allocation information.

[0112] Optionally, in this embodiment, at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

[0113] That is, the feedback information corresponding to multiple PSCCHs and / or PSSCHs may be fed back collectively, or the feedback information corresponding to each PSCCH and / or PSSCH may be fed back independently. The feedback information is a hybrid automatic repeat request (HARQ).

[0114] Specifically, PSCCH and / or PSSCH are located in different carriers, and centralized feedback can be understood as centralized feedback of all carriers, that is, HARQ information of all carriers is concentrated on the PSFCH of one (or a few) carriers for feedback, such as Figure 4As shown, this can reduce the PSFCH feedback overhead. For centralized feedback, only one ACK is needed to confirm the successful transmission of information N cycles ago (ACK information can also be fed back to each PRB separately, so that there is no need to retransmit the entire message in case of failure). PSFCH can be a 1-bit PSFCH, and only one ACK is needed to confirm the successful transmission of information N cycles ago. In case of failure, it is impossible to confirm which part of the transmission failed and the entire message needs to be retransmitted. If centralized feedback is used, when the HARQ information of all carriers is concentrated on the PSFCH of one carrier for feedback, a single PSFCH may not be able to carry the HARQ information of all carriers. Therefore, the PSFCH channels of adjacent component carriers can be used, and several continuous PSFCH channels in the frequency domain carry the HARQ information of all carriers.

[0115] Independent feedback can be understood as independent feedback of each carrier, that is, each carrier carries PSFCH resources separately, such as Figure 5 As shown, accordingly, all PSFCHs need to feedback ACK to confirm successful transmission.

[0116] Of course, if there is cross-carrier scheduling in SL-CA, that is, the PSCCH of one carrier schedules the PSSCH of other carriers, the centralized feedback can transmit the feedback information of the PSCCH and / or PSSCH of a certain carrier in the PSFCH of other carriers.

[0117] Therefore, optionally, in this embodiment, the PSFCH is a PSFCH on at least one adjacent component carrier; or,

[0118] The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

[0119] Thus, for centralized feedback, when the feedback information of all carriers is concentrated on the PSFCH of one carrier for feedback, a PSFCH of one time unit (such as an orthogonal frequency-division multiplexing (OFDM) symbol) may not be able to carry the feedback information of all carriers. In this way, centralized feedback can use multiple PSFCHs on adjacent component carriers to carry the feedback information of all carriers; or, the PSFCH on the same carrier occupying multiple OFDM symbols can be used to carry the feedback information of all carriers.

[0120] As an optional implementation, when the PSFCH is a PSFCH on multiple adjacent component carriers, these PSFCHs are continuous in the frequency domain, or the interval is less than a preset threshold. Figure 6As shown, the PSFCH of carrier 1 cannot carry excessive HARQ information (or carrier 1 does not send PSFCH), so the PSSCH of carrier 1 needs to be fed back in the PSFCH of carrier 2.

[0121] As an optional implementation, when the PSFCH is a PSFCH on the same carrier and occupies multiple OFDM symbols, these OFDM symbols are continuous in the time domain, for example, Figure 7 As shown, the PSFCH that occupies more OFDM symbols (such as 4 symbols, where the first symbol is automatic gain control (AGC) and the other three symbols carry HARQ information) ensures that there are enough bits to carry all HARQ information.

[0122] Optionally, in this embodiment, the terminal acquires the power allocation information of the PSFCH, including at least one of the following:

[0123] The terminal receives the power allocation information carried by high-layer signaling;

[0124] The terminal determines the power allocation information according to a channel state;

[0125] The terminal determines the power allocation information according to the service priority.

[0126] That is, the terminal can determine the power allocation information of PSFCH based on one or more of high-level signaling, channel status, and service priority. Of course, the power allocation information of PSFCH can also be determined in combination with other information, such as signal type, etc., which will not be listed here.

[0127] Optionally, the high-layer signaling is sidelink control information (SCI) or downlink control information (DCI). For example, in a mode 1 scenario, the power allocation information of the PSFCH is indicated by the base station using DCI; in a mode 2 scenario, the power allocation information of the PSFCH is indicated by SCI.

[0128] Optionally, the channel state includes channel quality information between the terminal and the communication object. For example, the terminal can allocate higher transmission power to the PSFCH on a communication link with lower channel quality information (such as a larger path loss). Of course, the channel state also includes other channel environment parameters, which are not listed here one by one.

[0129] In this embodiment, if the terminal determines the power allocation information according to the service priority, the terminal can divide the power according to the service priority, and the high-priority service uses a larger power for feedback, thereby ensuring stable transmission of the high-priority service.

[0130] Alternatively, the service priority may be implicitly indicated by the service type.

[0131] Optionally, the power allocation information of the PSFCH may be statically configured, or may be dynamically adjusted.

[0132] As an optional implementation, the power allocation information of the PSFCH configured when the PSCCH / PSSCH is sent is used for feedback transmission, which cannot be changed during the period. The static configuration can be indicated in a pre-configured manner.

[0133] As an optional implementation method, the power allocation information of PSFCH can change at any time according to changes in one or more of the high-level signaling, channel status, and service priority. For example, as the channel status changes, the terminal will update the power allocation information of PSFCH at any time; for another example, the power allocation information of PSFCH carried by the high-level signaling received most recently will replace the power allocation information of PSFCH carried by the previous high-level signaling, or replace the power allocation information of PSFCH determined by the terminal based on the channel status and / or service priority.

[0134] It should be noted that the number of PSFCHs sent by the terminal at the same time does not exceed the maximum number of PSFCHs N configured by the high-level configuration. max,PSFCH .

[0135] The following describes the application of the method in the embodiment of the present application in combination with specific scenarios:

[0136] Scenario 1: The higher layer indicates the power allocation of different PRBs of the PSFCH of the same carrier

[0137] The terminal receives the first information directly indicated by the high-level signaling, that is, the transmit power of the PSFCH PRB corresponding to each PSCCH / PSSCH. In the mode 1 scenario, the first information is carried by the DCI directly sent by the gNB; in the mode 2 scenario, the first information is carried by the 2nd-order SCI. Figure 8 As shown, the higher layer signaling indicates that PSSCH 1 to 4 use PRB 1 to 4 for feedback respectively, and specifies the corresponding power respectively.

[0138] Scenario 2: Power allocation of different PRBs of the same carrier PSFCH according to service priority

[0139] The terminal may determine the first information according to the service priority, that is, allocate the transmission power of the PSFCH PRB corresponding to each PSCCH / PSSCH.

[0140] like Fig. 9 As shown, the UE can determine the first information according to the signal type and service priority, that is, to allocate power to different PRBs. For example, the PSCCH signal contains the 1st SCI indication, which has a higher priority, so the corresponding PRB M / N can be allocated a higher power. In PSSCH 1 to 4, the first two carry security services, and the latter two carry entertainment services such as XR. Therefore, PSSCH 1 / 2 has a higher priority, and the corresponding PRB1 / 2 will also be allocated a higher transmit power.

[0141] At the same time, the transmitter also needs to ensure that the transmission power does not exceed the maximum transmission power, and the number of PSFCHs sent does not exceed the maximum number of PSFCHs sent N configured by the high-level layer. max,PSFCH .

[0142] Scenario 3: Channel status affects the power allocation of different PRBs of the same carrier PSFCH

[0143] The terminal may determine the first information according to the channel state (such as the channel quality information of different feedback targets), that is, allocate the transmission power of the PSFCH PRB corresponding to each PSCCH / PSSCH.

[0144] like Fig.10 As shown in the figure, PSSCH 1 / 2, 3 / 4, 5 / 6 are sent in different time slots, and the communication objects are UE1, UE2, and UE3 respectively. The three are fed back in one PSFCH at the same time. Therefore, the power required for sending PRB 1 / 2, PRB 3 / 4, and PRB M / N is different. The transmitter allocates power according to the channel quality information of the three (such as Signal to Interference plus Noise Ratio (SINR)).

[0145] For example, the transmitter measures the SINR of the signals received from UE1, UE2, and UE3. The higher the SINR, the better the channel quality. Accordingly, a lower transmission power can be allocated to ensure the normal reception of the PSFCH.

[0146] Scenario 4: The higher layer indicates the PSFCH power allocation of different carriers at the same time

[0147] The terminal receives the second information directly indicated by the high-level signaling, that is, the transmit power of the PSFCH corresponding to each carrier. When two carriers belong to the same SL-CA component carrier (it can be intra-band carrier aggregation or inter-band carrier aggregation), the PSFCH power sent by different carriers at the same time can be uniformly allocated.

[0148] The PSFCH power allocation of different carriers can be indicated by high-level signaling. In the mode 1 scenario, the second information is carried by the gNB directly sending DCI; in the mode 2 scenario, the second information is carried by SCI. Fig.11 As shown, the two PSFCH channels belong to different component carriers in the same SL-CA, and the PSCCH can directly indicate the power allocation of the two PSFCHs at a certain moment by carrying the second information. This indication belongs to cross-carrier scheduling.

[0149] Before determining the PSFCH power allocation of different carriers at the same time, the first transmission power of the PRB in the PSFCH can be determined by the first information, that is, the expected power of each PSFCH has been determined. In this way, after the second transmission power of the PSFCH is determined by the second information, the entire PSFCH power can be adjusted, and the power of all PRBs therein can be increased or decreased in proportion, and the total transmission power is ensured not to exceed the maximum transmission power of the system.

[0150] Scenario 5: PSFCH power allocation for different carriers at the same time based on service priority

[0151] The terminal may determine the second information according to the service priority, that is, allocate the transmission power of each PSFCH.

[0152] The UE can allocate power for PSFCHs sent by different carriers at the same time according to the signal type and service priority. For example, PSFCH 1 and PSFCH 2 sent simultaneously at a certain moment carry the feedback information of PSSCH 1 and PSSCH 2 respectively. PSSCH 1 carries security services, and PSSCH 2 carries entertainment services such as XR. Therefore, PSSCH 1 has a higher priority, and the corresponding transmit power allocated to PSFCH 1 will also be higher.

[0153] Scenario 6: Channel environment affects PSFCH power allocation of different carriers at the same time

[0154] The terminal may determine the second information according to the channel status (such as the channel quality information of different feedback targets), that is, allocate the transmission power of each PSFCH.

[0155] Assume that UE1 and UE2 are in the same direction of the base station, but at different distances, and their channel environments are different. Different carriers need to be used to send PSFCH to UE1 and UE2 at the same time. At this time, the transmit power of the two PSFCHs should be determined by the channel status. For example, power allocation can be performed based on SINR. The transmitter measures the SINR of the signals received from UE1 and UE2. The higher the SINR, the better the channel quality. Correspondingly, a lower transmit power can be allocated to ensure the normal reception of PSFCH.

[0156] Scenario 7: Statically configure PSFCH power allocation information

[0157] Static configuration may be feedback transmission according to the first information and / or second information configured when PSCCH / PSSCH is sent, which cannot be changed during the period, and the static configuration may be indicated in a pre-configured manner.

[0158] For example, in the SL-CA transmission of mode 1 scenario, the gNB can set the power allocation information of PSFCH when sending PSCCH, which is indicated by the higher layer, and the power of all subsequent PSFCHs is determined by the gNB.

[0159] Scenario 8: Dynamically adjust PSFCH power allocation information

[0160] Dynamic adjustment means that during service transmission, the first information and / or the second information can change at any time according to changes in high-level signaling, channel status, and service priority.

[0161] For example, in the SL-CA transmission of the mode 2 scenario, the transmitting UE can determine the power allocation information of the PSFCH to be dynamically adjusted when sending the PSCCH. When it is not within the coverage of the base station, the UEs at both ends of the transmission and reception can determine the power allocation information of the PSFCH according to the service priority or channel status (the two indicators can occupy different weights and jointly affect the power allocation of the PSFCH). When one of the two parties enters the coverage of the base station, it can switch to power allocation instructed by the higher layer at any time.

[0162] To sum up, the method of the embodiment of the present application, by acquiring the power allocation information of the PSFCH, the terminal can understand the power allocation information of the PRB in the PSFCH, as well as one or more of the power allocation information of the PSFCH of different carriers at the same time, thereby sending the PSFCH carrying feedback information according to the power allocation information, thereby ensuring the stable transmission of the PSFCH carrying feedback information.

[0163] like Fig.12As shown, the embodiment of the present application also provides a direct link transmission device, including: a memory 1220, a transceiver 1210, and a processor 1200: the memory 1220 is used to store program instructions; the transceiver 1210 is used to send and receive data under the control of the processor 1200; the processor 1200 is used to read the program instructions in the memory 1220 and perform the following operations:

[0164] Obtain power allocation information of the physical direct link feedback channel PSFCH;

[0165] The transceiver 1210 is further configured to: send a PSFCH carrying feedback information according to the power allocation information;

[0166] The power allocation information includes at least one of the following:

[0167] First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

[0168] The second information is the power allocation information of the PSFCH of different carriers at the same time.

[0169] Among them, Fig.12 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1200 and various circuits of memory represented by memory 1220 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1210 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables, and other transmission media. For different user devices, the user interface 1230 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0170] The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 can store data used by the processor 1200 when performing operations.

[0171] Optionally, the processor 1200 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor 1200 may also adopt a multi-core architecture.

[0172] The processor 1200 is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the program instructions stored in the memory. The processor 1200 and the memory 1220 can also be arranged physically separately.

[0173] Optionally, the processor is further configured to: determine the transmit power of the PSFCH according to the power allocation information;

[0174] The transceiver is further configured to: transmit the PSFCH according to the transmit power.

[0175] Optionally, the processor is further configured to perform at least one of the following:

[0176] Based on the first information, determining a first transmit power of a PRB in the PSFCH; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

[0177] Determine a second transmit power of the PSFCH based on the second information;

[0178] The first transmit power is adjusted based on the second transmit power.

[0179] Optionally, at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

[0180] Optionally, the PSFCH is a PSFCH on at least one adjacent component carrier; or,

[0181] The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

[0182] Optionally, the processor is further configured to perform at least one of the following:

[0183] Receiving the power allocation information carried by high-level signaling;

[0184] Determine the power allocation information according to the channel state;

[0185] The power allocation information is determined according to the service priority.

[0186] Optionally, the channel status includes channel quality information between the terminal and the communication object.

[0187] The device of the embodiment of the present application can understand the power allocation information of the PRB in the PSFCH and one or more of the power allocation information of the PSFCH of different carriers at the same time by acquiring the power allocation information of the PSFCH, thereby sending the PSFCH carrying feedback information according to the power allocation information, thereby ensuring the stable transmission of the PSFCH carrying feedback information.

[0188] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0189] like Fig.13 As shown, the present application also provides a direct link transmission device, including:

[0190] The acquisition module 1310 is used to acquire power allocation information of a physical direct link feedback channel PSFCH;

[0191] A sending module 1320, configured to send a PSFCH carrying feedback information according to the power allocation information;

[0192] The power allocation information includes at least one of the following:

[0193] First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

[0194] The second information is the power allocation information of the PSFCH of different carriers at the same time.

[0195] Optionally, the sending module is further used for:

[0196] Determining the transmit power of the PSFCH according to the power allocation information;

[0197] The PSFCH is transmitted according to the transmission power.

[0198] Optionally, the sending module is further used for at least one of the following:

[0199] Based on the first information, determining a first transmit power of a PRB in the PSFCH; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

[0200] Determine a second transmit power of the PSFCH based on the second information;

[0201] The first transmit power is adjusted based on the second transmit power.

[0202] Optionally, at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

[0203] Optionally, the PSFCH is a PSFCH on at least one adjacent component carrier; or,

[0204] The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

[0205] Optionally, the acquisition module is further used for at least one of the following:

[0206] Receiving the power allocation information carried by high-level signaling;

[0207] Determine the power allocation information according to the channel state;

[0208] The power allocation information is determined according to the service priority.

[0209] Optionally, the channel status includes channel quality information between the terminal and the communication object.

[0210] The device of the embodiment of the present application can understand the power allocation information of the PRB in the PSFCH and one or more of the power allocation information of the PSFCH of different carriers at the same time by acquiring the power allocation information of the PSFCH, thereby sending the PSFCH carrying feedback information according to the power allocation information, thereby ensuring the stable transmission of the PSFCH carrying feedback information.

[0211] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0212] In some embodiments of the present application, a processor-readable storage medium is further provided, wherein the processor-readable storage medium stores program instructions, and the program instructions are used to enable the processor to execute the following steps:

[0213] Obtain power allocation information of the physical direct link feedback channel PSFCH;

[0214] Sending a PSFCH carrying feedback information according to the power allocation information;

[0215] The power allocation information includes at least one of the following:

[0216] First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

[0217] The second information is the power allocation information of the PSFCH of different carriers at the same time.

[0218] Optionally, sending a PSFCH carrying feedback information according to the power allocation information includes:

[0219] Determining the transmit power of the PSFCH according to the power allocation information;

[0220] The PSFCH is transmitted according to the transmission power.

[0221] Optionally, determining the transmit power of the PSFCH according to the power allocation information includes at least one of the following:

[0222] Based on the first information, determining a first transmit power of a PRB in the PSFCH; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

[0223] Determine a second transmit power of the PSFCH based on the second information;

[0224] The first transmit power is adjusted based on the second transmit power.

[0225] Optionally, at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

[0226] Optionally, the PSFCH is a PSFCH on at least one adjacent component carrier; or,

[0227] The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

[0228] Optionally, the acquiring power allocation information of the PSFCH includes at least one of the following:

[0229] Receiving the power allocation information carried by high-level signaling;

[0230] Determine the power allocation information according to the channel state;

[0231] The power allocation information is determined according to the service priority.

[0232] Optionally, the channel status includes channel quality information between the terminal and the communication object.

[0233] When the program instructions are executed by the processor, the above application can be realized. Figure 1 To avoid repetition, all implementation methods in the terminal side method embodiment shown are not described again here.

[0234] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, applicable systems can be global system of mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet radio service (General Packet Radio Service, GPRS) system, long-term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD) system, advanced long-term evolution (Long Term Evolution Advanced, LTE-A) system, universal mobile system (Universal Mobile Telecommunication System, UMTS), global interconnection microwave access (Worldwide interoperability for Microwave Access, WiMAX) system, 5G new air interface (New Radio, NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0235] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0236] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the Long Term Evolution (Long Term Evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0237] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0238] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0239] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0240] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0241] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0242] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0243] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0244] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A direct link transmission method, characterized in that: include: The terminal obtains power allocation information of the physical direct link feedback channel PSFCH; The terminal sends a PSFCH carrying feedback information according to the power allocation information; The power allocation information includes at least one of the following: First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH; The second information is the power allocation information of the PSFCH of different carriers at the same time.

2. The method according to claim 1, characterized in that The terminal sends a PSFCH carrying feedback information according to the power allocation information, including: The terminal determines the transmit power of the PSFCH according to the power allocation information; The terminal sends the PSFCH according to the transmit power.

3. The method according to claim 2, characterized in that The terminal determines, according to the power allocation information, the transmit power of the PSFCH, including at least one of the following: The terminal determines a first transmit power of a PRB in the PSFCH based on the first information; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH; Determining, by the terminal, a second transmit power of the PSFCH based on the second information; The terminal adjusts the first transmit power based on the second transmit power.

4. The method according to claim 1, characterized in that At least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

5. The method according to claim 4, characterized in that The PSFCH is a PSFCH on at least one adjacent component carrier; or, The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

6. The method according to claim 1, characterized in that The terminal obtains power allocation information of the PSFCH, including at least one of the following: The terminal receives the power allocation information carried by high-layer signaling; The terminal determines the power allocation information according to a channel state; The terminal determines the power allocation information according to the service priority.

7. The method according to claim 6, characterized in that The channel status includes channel quality information between the terminal and a communication partner.

8. A direct link transmission device, characterized in that: include: Memory, transceiver, processor; A memory for storing program instructions; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the program instructions in the memory and perform the following operations: Obtain power allocation information of the physical direct link feedback channel PSFCH; The transceiver is further used to: send a PSFCH carrying feedback information according to the power allocation information; The power allocation information includes at least one of the following: First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH; The second information is the power allocation information of the PSFCH of different carriers at the same time.

9. The device according to claim 8, characterized in that The processor is further configured to: determine the transmit power of the PSFCH according to the power allocation information; The transceiver is further configured to: transmit the PSFCH according to the transmit power.

10. The device according to claim 9, characterized in that The processor is further configured to: Based on the first information, determining a first transmit power of a PRB in the PSFCH; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH; Determine a second transmit power of the PSFCH based on the second information; The first transmit power is adjusted based on the second transmit power.

11. The device according to claim 8, characterized in that At least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and / or PSSCHs; or, each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and / or PSSCH.

12. The device according to claim 11, characterized in that The PSFCH is a PSFCH on at least one adjacent component carrier; or, The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

13. The device according to claim 8, characterized in that The processor is further configured to: Receiving the power allocation information carried by high-level signaling; Determine the power allocation information according to the channel state; The power allocation information is determined according to the service priority.

14. The device according to claim 13, characterized in that The channel status includes channel quality information between the terminal and the communication object.

15. A direct link transmission device, characterized in that: include: An acquisition module, used to acquire power allocation information of a physical direct link feedback channel PSFCH; A sending module, configured to send a PSFCH carrying feedback information according to the power allocation information; The power allocation information includes at least one of the following: First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH; The second information is the power allocation information of the PSFCH of different carriers at the same time.

16. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the direct link transmission method according to any one of claims 1 to 7.

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