Information indication method, device, terminal and readable storage medium

Abstract

The present application discloses an information indication method, apparatus, terminal, and readable storage medium, belonging to the field of communication technology. The information indication method of an embodiment of the present application includes: a terminal sending or receiving at least one of the following: first control information and second control information; the first control information is carried on a first control channel or a first shared channel; and the second control information is carried on the first shared channel.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an information indication method, device, terminal and readable storage medium. Background Art

[0002] In the New Radio (NR) sidelink (SL), to enable co-frequency coexistence between NR and Long Term Evolution (LTE) terminals, NR terminals can send control information that can be recognized by LTE terminals. In this case, because the control information recognized by LTE terminals generally carries less indication information, other NR terminals will not be able to obtain sufficient information, affecting the performance of NR terminals. Summary of the Invention

[0003] The embodiments of the present application provide an information indication method, apparatus, terminal, and readable storage medium, which can solve the problem that the terminal performance is affected by the lack of indication information carried by the current sidelink control information.

[0004] In a first aspect, an information indication method is provided, comprising:

[0005] The terminal sends or receives at least one of the following: first control information, second control information;

[0006] The first control information is carried on a first control channel or a first shared channel;

[0007] The second control information is carried on the first shared channel.

[0008] In a second aspect, an information indication device is provided, comprising:

[0009] a transceiver module, configured to send or receive at least one of the following: first control information and second control information; wherein the first control information is carried on a first control channel or a first shared channel;

[0010] The second control information is carried on the first shared channel.

[0011] In a third aspect, a terminal is provided, comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0012] In a fourth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to send or receive at least one of the following: first control information, second control information; wherein the first control information is carried on a first control channel or a first shared channel; and the second control information is carried on a first shared channel.

[0013] In a fifth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0014] In a sixth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the steps of the method described in the first aspect.

[0015] In a seventh aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect.

[0016] In this embodiment of the present application, a terminal can send or receive at least one of the following: first control information and second control information; the first control information is carried on the first control channel or the first shared channel; and the second control information is carried on the first shared channel. Thus, by designing the first control information and / or the second control information, the communicating peer can obtain sufficient information to ensure the performance of the corresponding terminal operating in the coexistence frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0018] Figure 2 This is a flowchart of an information indication method provided by an embodiment of the present application;

[0019] Figure 3 This is one of the time slot diagrams in the embodiment of the present application;

[0020] Figure 4 This is the second time slot diagram in the embodiment of the present application;

[0021] Figure 5 This is the third time slot diagram in the embodiment of the present application;

[0022] Figure 6 This is the fourth time slot diagram in the embodiment of the present application;

[0023] Figure 7This is a structural diagram of an information indication device provided in an embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0025] Figure 9 This is a schematic diagram of the structure of another terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0027] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0028] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to applications other than NR system applications, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0029] Figure 1A block diagram of a wireless communication system applicable to the embodiments of the present application is shown. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may also be referred to as a terminal device or user equipment (UE). The terminal 11 may be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home appliance with wireless communication capabilities, such as a refrigerator, a television, a washing machine, or furniture), or other terminal-side devices. Wearable devices include smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, game consoles, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can be a base station or a core network, where the base station can be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or some other appropriate term in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary.

[0030] Understandable, based on Figure 1 The applicable scenario of the embodiment of the present application is sidelink transmission between terminals 11, including but not limited to NR system, 6G communication system, etc.

[0031] In the embodiment of the present application, the sidelink may also be referred to as: secondary link, side link, side link, etc.; there is no limitation on this. Sidelink transmission is data transmission directly between terminals such as user equipment (UE) on the physical layer.

[0032] Optionally, the time unit in the embodiment of the present application may include but is not limited to a frame, a subframe, a time slot, a symbol, etc. In the following embodiments, the time unit is described mainly based on the slot in NR, but is not limited to the slot.

[0033] The information indication method, device, terminal and readable storage medium provided by the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0034] See Figure 2 , Figure 2 This is a flow chart of an information indication method provided by an embodiment of the present application, which is executed by a terminal, such as an NR terminal. Figure 2 As shown, the method includes the following steps:

[0035] Step 21: The terminal sends or receives at least one of the following: first control information, second control information.

[0036] In this embodiment, the first control information is carried on the first control channel or the first shared channel, and the second control information is carried on the first shared channel.

[0037] It should be noted that the first control information and the second control information are essentially sidelink control information (SCI), but differ from existing SCI. The first control channel is essentially the physical sidelink control channel (PSCCH), but differs from existing PSCCHs. To avoid confusion with existing PSCCHs, some descriptions below refer to PSCCH-1. The first shared channel is essentially the physical sidelink shared channel (PSSCH), but differs from existing PSSCHs. To avoid confusion with existing PSSCHs, some descriptions below refer to PSSCH-1.

[0038] Optionally, the first control information and / or the second control information is enhanced information of the third control information sent by the terminal. Since the third control information can indicate less information, the first control information and / or the second control information are introduced to indicate more information. Taking the NR terminal as an example, the third control information can adopt SCI format 1 in the LTE sidelink, so that the LTE terminal can successfully decode the third control information sent by the NR terminal and obtain the resource reservation related information indicated by the third control information for resource selection, thereby achieving co-frequency coexistence with the LTE terminal. However, since the third control information can indicate less information, the first control information and / or the second control information are introduced to indicate more information, thereby ensuring the performance of the NR terminal operating in the coexistence frequency band. Among them, the third control information is mainly used for the LTE terminal to read the resource reservation information of the NR terminal for resource selection. In this case, other NR terminals can also decode the third control information of the NR terminal to obtain resource reservation information. The first control information and / or the second control information are mainly used for other NR terminals to read the resource reservation information of the NR terminal for resource selection and receive data, HARQ feedback, etc.

[0039] The third control information is carried on the second control channel. This third control information is essentially Sidelink Control Information (SCI), but differs from existing SCI. To avoid confusion with existing SCI, it is referred to as SA in some of the following descriptions. The second control channel is essentially the Physical Sidelink Control Channel (PSCCH), but differs from existing PSCCH. To avoid confusion with existing PSCCH, it is referred to as PSCCH_SA in some of the following descriptions.

[0040] In the information indication method of the embodiments of the present application, a terminal can send or receive at least one of the following: first control information and second control information; the first control information is carried on the first control channel or the first shared channel; and the second control information is carried on the first shared channel. Thus, by designing the first control information and / or the second control information, the communicating peer can obtain sufficient information to ensure the performance of the corresponding terminal operating in the coexistence frequency band.

[0041] In some embodiments, the third control information may include at least one of the following:

[0042] i) First indication information indication field: The first indication information indication field is mainly used to distinguish terminals and / or indicate specific information of the terminal (such as NR UE).

[0043] ii) Priority indication field; for example, used to indicate the priority of the currently transmitted data.

[0044] iii) Resource reservation indication field; for example, used to indicate the period value of periodic reservation.

[0045] iv) Frequency domain resource indication field; for example, used to indicate the frequency domain positions of initial transmission and retransmission resources.

[0046] v) Initial transmission and retransmission interval indication field; for example, a time domain offset used to indicate the time domain positions of initial transmission and retransmission resources.

[0047] ⅵ) MCS indication field; for example, used to indicate the MCS level.

[0048] ⅶ) Retransmission indication field; for example, used to indicate whether retransmission is allowed.

[0049] viii) Transport format indication field; for example, used to indicate whether the transport format uses rate matching, transport block size (TBS) scaling, or puncturing and no TBS-scaling.

[0050] ix) HARQ association information indication field; for example, used to indicate that the reserved resources in multiple HARQ processes belong to the same TB, or SL process, MAC PDU (Protocol Data Unit), etc.

[0051] x) a format indication field of the first control information; for example, used to indicate different formats of the first / second control information.

[0052] xi) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0053] xii) Beta_offset indication field; for example, used to indicate relevant information for determining the first / second control information carried on the first shared channel, such as mapping mode, number of modulation symbols, etc.

[0054] In this embodiment of the present application, the first control information may include at least one of the following:

[0055] i) Priority indication field; for example, used to indicate the priority of the currently transmitted data.

[0056] ii) Frequency domain resource indication field; for example, used to indicate the frequency domain position of reserved resources.

[0057] iii) Time domain resource indication field; for example, used to indicate the relative time domain position of the reserved resources.

[0058] iv) Reservation period indication field; for example, used to indicate the period value of periodic reservation.

[0059] v) Demodulation Reference Signal (DMRS) pattern indication field; for example, used to indicate which pattern is used for DMRS.

[0060] vi) A field indicating the format of the second control information; for example, used to indicate the format of the next SCI that may exist, ie, the second control information.

[0061] ⅶ) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount of information such as the number of modulation symbols.

[0062] ⅷ) DMRS port quantity indication field; for example, used to indicate the number of ports.

[0063] ix) Modulation and Coding Scheme (MCS) indication field; for example, used to indicate the MCS level.

[0064] x) Additional MCS indication field; for example, used for additional MCS indication.

[0065] xi) Physical Sidelink Feedback Channel (PSFCH) overhead indication field; for example, used to indicate PSFCH overhead related information.

[0066] xii) Hybrid Automatic Repeat reQuest (HARQ) process number indication field; for example, used to indicate the HARQ process number.

[0067] xiii) New data indication field.

[0068] xiv) Redundancy version indication field.

[0069] xv) Source ID indication field; for example, used to indicate the ID of the sending UE.

[0070] xvi) Destination ID indication field; for example, used to indicate the ID of the receiving UE.

[0071] xvii) HARQ feedback switch indication field; for example, used to indicate whether HARQ feedback is allowed.

[0072] xviii) Transmission type indication field; for example, used to indicate whether the current transmission is unicast, multicast or broadcast.

[0073] xix) Channel State Information (CSI) request indication field; for example, used to trigger a CSI report.

[0074] xx) Area ID indication field; for example, used to indicate the area ID.

[0075] xxi) Communication range indication field; for example, used to indicate the area for feedback NACK.

[0076] xxii) HARQ process association indication field; for example, used to indicate that the reserved resources in multiple HARQ processes belong to the same transport block (TB), SL process, MAC PDU (protocol data unit), etc.

[0077] In some embodiments, taking NR UE as an example, the content of the first control information indication is the content in the above i-xi. This indication content is the same as NR SCI format 1-A. SA is mainly used to allow LTE UE to identify resource reservation status.

[0078] In some embodiments, taking NR UE as an example, the content indicated by the first control information is the content in the above i-xi and the HARQ process association indication field. This indication content is equivalent to adding HARQ indication information to NR SCI format 1-A.

[0079] In some embodiments, in a scenario where resource selection-related information is indicated by SA and the first control information sends other control information, the content indicated by the first control information is the content of the above-mentioned v-xi, and information related to resource selection is no longer sent; or the content of the above-mentioned v, vi, vii, viii and xi, in which case the MCS is also indicated by SA.

[0080] In some embodiments, when the resource selection related information is indicated by SA, the content indicated by the first control information is the content and destination ID indicated in v, vi, vii, viii and xi above. In this case, it can be determined whether to decode subsequent information based on the destination ID.

[0081] In some embodiments, in a scenario where resource selection-related information is indicated by SA, the content indicated by the first control information is the content in v, vi, vii, viiii, xi and xii-xix above, that is, the first control information adopts part of SCI format 1-A and SCI format 2-A; or the content in v, vi, vii, viiii, xi, xii-xvii, xx and xxi above, that is, the first control information adopts part of SCI format 1-A and SCI format 2-B.

[0082] Optionally, the setting of the indication field in the first control information may satisfy at least one of the following:

[0083] 1) Setting the priority indication field according to the priority of the TB indicated by the first information, or the highest priority among the priorities of the TB;

[0084] 2) Setting the MCS indication field according to the content indicated by the first information;

[0085] 3) Setting a frequency domain resource indication field and / or a time domain resource indication field according to the resources selected by the first information; for example, this is applicable to a non-periodic reservation situation;

[0086] 4) Setting the frequency domain resource indication field and the time domain resource indication field according to the time and frequency domain resource positions of different HARQ processes corresponding to the same TB selected by the first information; for example, using different processes to implement non-periodic reservation;

[0087] 5) Setting the format indication field of the second control information according to the content indicated by the first information;

[0088] 6) Setting a reservation period indication field according to the content indicated by the first information;

[0089] 7) According to the content indicated by the first information, at least one of the following items is set: HARQ process number indication field, new data indication field, source ID indication field, destination ID indication field, HARQ feedback switch indication field, propagation type indication field, and CSI feedback request indication field; these indication fields are part of SCI format 2-A. By indicating the ID information, the NR terminal can transmit information based on unicast / multicast in the coexistence frequency band, and is no longer limited to the broadcast type of LTE; by introducing HARQ feedback-related indications, the NR terminal can also use HARQ feedback to determine whether retransmission is required in the coexistence frequency band, thereby enhancing the transceiver performance of the NR terminal;

[0090] 8) According to the content indicated by the first information, set at least one of the following items: HARQ process number indication field, new data indication field, source ID indication field, destination ID indication field, HARQ feedback switch indication field, area ID indication field, and communication range indication field; these indication fields are part of SCI format 2-B. By introducing the area ID indication field, the communication range indication field, etc., the NR terminal can implement a multicast communication mode in which only NACK is fed back, providing greater flexibility.

[0091] 9) When the terminal uses resource allocation mode 1, the frequency domain resource indication field and / or the time domain resource indication field are set according to the indication information of the dynamic grant or the configured grant; the resource allocation mode 1 is for the network side device such as the base station to schedule resources.

[0092] Optionally, the first information in the above 1) to 9) may include at least one of the following: a high-layer indication, downlink control information (DCI), SCI, etc. In this way, taking the NR terminal as an example, more indication field indication information, such as UE ID, HARQ feedback, CSI feedback and other related information, can be used to enable the NR terminal to introduce a performance-enhancing feature in the coexistence band to ensure the performance of the NR terminal in the coexistence band.

[0093] In the embodiment of the present application, the first control channel (PSCCH-1) may satisfy at least one of the following:

[0094] 1) Use the first channel format.

[0095] The first channel format can be a defined format that is the same as a specific channel format, or it can reuse / multiplex a PSCCH channel format of a specific or specified protocol version, or it can be a newly defined format, and there is no limitation on this. For example, PSCCH-1 can reuse / multiplex a PSCCH channel of protocol version NR R16 / R17, that is, use the same modulation and coding rules.

[0096] Optionally, for scrambling, before modulation, the bits b(0),…,b(M bit -1) Scramble, M bit is the number of bits transmitted on the PSCCH channel, and the scrambling sequence is obtained in, c(i) is the scrambling sequence. The initialization setting of the scrambling sequence generator is, for example: c init =1010.

[0097] Furthermore, for modulation, the scrambling sequence According to the modulation mode QPSK (Quadrature Phase Shift Keying), modulation symbols sd(0),…,d(M symb -1), where M symb =M bit / 2.

[0098] 2) The time-frequency domain mapping rule is the first rule. The time-frequency domain mapping rule of the first control channel is also: the time-frequency domain mapping rule of the first control information carried by the first control channel.

[0099] Optionally, the first rule may satisfy at least one of the following:

[0100] I) Mapping starts from the second symbol of the PSSCH time slot, PSSCH and / or SL resource, and occupies X symbols, where X is an integer greater than 0. In this case, the first symbol is a repetition of the second symbol and is used for AGC automatic gain control.

[0101] Optionally, X is equal to 1. For example, when the DMRS pattern in PSCCH-1 is designed based on the LTE DMRS, X is equal to 1. Alternatively, X is equal to 2 or 3 as indicated by a higher-layer parameter. For example, when the DMRS pattern in PSCCH-1 is similar to that of the existing NR version, X is equal to 2 or 3.

[0102] II) Occupies the entire bandwidth in the frequency domain, or occupies N sub-channels, where N is an integer greater than 0.

[0103] When the entire bandwidth is occupied in the frequency domain, it is applicable to the case where only one symbol is occupied in the time domain and there is no third control information. N can be predefined by the protocol / preconfigured by the network or the terminal / configured by the network or the terminal.

[0104] III) When the second control channel is separated from the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the lowest physical resource block (PRB) of the lowest subchannel of the resource selected for data transmission.

[0105] IV) When the second control channel is adjacent to the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the first PRB, where the first PRB is the lowest PRB of the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information.

[0106] Optionally, the second control channel is separated from or adjacent to the PSSCH in the frequency domain, which can be determined by at least one of the following: protocol pre-definition, network pre-configuration, network configuration, radio resource control (RRC) signaling indication, DCI indication, or third control information indication. Thus, with the help of the first rule, the mapping rules for control information at both the transmitting and receiving ends can be unified, so that the first control information is received and decoded at the corresponding position. Furthermore, the control information being located at a front position in the time domain facilitates the use of the control information to decode subsequent information.

[0107] In this embodiment of the present application, the first shared channel (PSSCH-1) may satisfy at least one of the following:

[0108] a) The second channel format is used, and the maximum number of layers is 1 or 2.

[0109] The second channel format can be a defined format that is the same as a specific channel format, or it can be a PSSCH channel format that reuses / multiplexes a specific or specified protocol version, or it can be a newly defined format, and there is no limitation on this. For example, PSSCH-1 can reuse / multiplex protocol version R16 / R17 PSSCH channels, that is, use the same modulation and coding rules, and the maximum number of layers is 1; or, PSSCH-1 can reuse / multiplex protocol version R16 / R17 PSSCH channels, that is, use the same modulation and coding rules, and the maximum number of layers is 2.

[0110] Optionally, for scrambling, the bit sequence is scrambled before modulation, where M bit It is the number of bits transmitted on the PSCCH channel, and the scrambling sequence is obtained. For example, the scrambling sequence uses a pseudo code.

[0111] Optionally, for modulation, the modulation mode of the bits of the carried control information may be QPSK, and the modulation mode of the bits of the data may be QPSK / 16QAM (Quadrature Amplitude Modulation) / 64QAM / 256QAM, etc.

[0112] Optionally, for layer mapping, the modulation symbol sequence may be mapped to different layers according to the number of layers.

[0113] Optionally, for precoding, the symbol sequence after layer mapping may be multiplied by a corresponding precoding matrix according to the configuration to obtain a new symbol vector.

[0114] Optionally, for each antenna port transmitting PSSCH, the precoded symbol vector can be multiplied by a power normalization factor to meet the transmit power requirement. It is then mapped to the allocated virtual time-frequency domain resources. The mapping is a two-step process: first, mapping the control information symbols to the configured locations using a frequency-domain-first, then time-domain mapping approach; then, mapping the data information symbols to locations where control information symbols / DMRS / PT-RS / CSI-RS / PSCCH are not mapped using a frequency-domain-first, then time-domain mapping approach.

[0115] b) The time-frequency domain mapping rule is the second rule. The time-frequency domain mapping rule of the first shared channel is also: the time-frequency domain mapping rule of the first control information carried by the first shared channel.

[0116] Optionally, the second rule may satisfy at least one of the following:

[0117] ① Frequency domain mapping first, then time domain mapping;

[0118] ② Mapping starts from the second symbol of the time unit or sidelink SL resource;

[0119] ③ Mapping starts from the first symbol mapped with DMRS. In this case, taking NR terminals as an example, it is suitable for DMRS reuse / multiplexing existing NR DMRS design.

[0120] ④ Mapping starts from the first symbol after the first DMRS symbol (such as symbol 3);

[0121] ⑤ Mapping starts from the symbol before the first DMRS symbol (such as symbol 1);

[0122] ⑥ The corresponding resource element (RE) in the resource block (RB) corresponding to the first control information is not used for at least one of the following: DMRS, phase tracking reference signal (PT-RS), control channel (such as PSCCH), channel state information reference signal (CSI-RS), etc.

[0123] ⑦ At least one of the following items does not exist in the symbol corresponding to the first control information (SA): DMRS, PT-RS, CSI-RS, etc.

[0124] This second rule unifies the mapping rules for control information at both the transmitter and receiver ends, allowing the first control information to be received and decoded at the appropriate location. Furthermore, the control information's early placement in the time domain facilitates its use in decoding subsequent information. Furthermore, carrying control information on a shared channel allows the first control information to contain more bits, thereby indicating more content and facilitating subsequent expansion.

[0125] In some embodiments, when the first control information is carried on PSSCH-1, the second control information does not exist.

[0126] Optionally, when the terminal sends the first control channel, that is, when sending the first control information through the first control channel, the first control channel occupies M symbols in the time domain and a preset number of PRBs in the frequency domain, where M is an integer greater than 0. That is, for PSCCH-1 carrying the first control information, the terminal will be provided with a certain number of symbols and a certain number of PRBs in the resource pool.

[0127] Optionally, M is a value determined by at least one of the following: protocol pre-definition, network pre-configuration, terminal pre-configuration, network configuration, and terminal configuration. For example, if M=1, the corresponding symbol is the second symbol valid for SL transmission in the time slot.

[0128] Optionally, the preset number of PRBs may satisfy at least one of the following: the number of PRBs is indicated by a higher layer, starts from the lowest PRB of the lowest subchannel corresponding to the PSSCH, and starts from the lowest PRB after excluding the PRB occupied by the third control information from the lowest subchannel corresponding to the PSSCH.

[0129] In an embodiment of the present application, after receiving / decoding the first control information, the terminal can obtain / determine at least one of the following: relevant information on resource reservation, format information of the second control information, overhead information of PSFCH, terminal ID information, propagation type information, HARQ feedback information, CSI request information, HARQ process related information, etc.

[0130] In some embodiments, the terminal assumes that the number of reserved bits can be any value when decoding the first control information.

[0131] In some embodiments, the second control information is enhanced information of the first control information. Based on the first control information, more indication field indication information, such as UE ID, HARQ feedback, CSI feedback, and other related information, can be sent through the second control information, so that the NR terminal introduces enhanced performance features in the coexistence band to ensure the performance of the NR terminal in the coexistence band.

[0132] Optionally, the second control information may satisfy at least one of the following:

[0133] 1) Use the first indicator field format. The first indicator field format can be a defined format that is the same as the specific indicator field format, or it can be an indicator field that reuses / multiplexes a specific format, or it can be a newly defined format, without limitation. For example, the second control information uses SCI format 2-C, and SCI format 2-C reuses / multiplexes the indicator field of NR SCI format 2-A; or, the second control information uses SCI format 2-D, and SCI format 2-D reuses / multiplexes the indicator field of NR SCI format 2-B.

[0134] For example, SCI format 2-A and SCI format 2-B can be shown in Table 1 below:

[0135] Table 1

[0136] type Number of bits type Number of bits SCI format 2-A SCI format 2-B HARQ process number 4 HARQ process number 4 New data indication 1 New data indication 1 Redundant version 2 Redundant version 2 Source ID 8 Source ID 8 Destination ID 16 Destination ID 16 HARQ enable indication 1 HARQ enable indication 1 Cast type 2 Zone ID 12 CSI request 1 Communication range 4

[0137] 2) The time-frequency domain mapping rule is the third rule. The time-frequency domain mapping rule of the second control information is also the time-frequency domain mapping rule of the first shared channel carrying the second control channel.

[0138] Optionally, the third rule may satisfy at least one of the following:

[0139] ① Mapping starts from the first symbol of the time unit (such as slot) and / or SL resource that is not used for DMRS;

[0140] ② Mapping starts from the first symbol of the time unit and / or SL resource that is not used for the first control information;

[0141] ③ Mapping starts from the first symbol of the time unit and / or SL resource that is not used for DMRS and the first control information;

[0142] It should be noted that the symbols in ①, ② and ③ above do not take into account the first symbol used for automatic gain control AGC.

[0143] ④ Mapping starts from the first DMRS symbol in the time slot where the first shared channel is located; this situation is applicable to the DMRS pattern based on NR DMRS design;

[0144] ⑤ Mapping starts from the first symbol after the DMRS symbol in the time slot where the first shared channel is located; this situation is applicable to the DMRS pattern based on the LTE DMRS design;

[0145] ⑥ Mapping starts from the first symbol where the first control information is located; at this time, the second control information and the first control information are FDM;

[0146] ⑦ When the second control channel is adjacent to the PSSCH frequency domain position, the frequency domain mapping starts from the index of the first PRB, the first PRB is the lowest PRB after the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information, and the third control information is carried on the second control channel;

[0147] ⑧ The corresponding RE in the corresponding RB is not used for at least one of the following: DMRS, PT-RS, first control channel (such as PSCCH), CSI-RS;

[0148] ⑨ At least one of the following does not exist in the corresponding symbol: DMRS, PT-RS, CSI-RS.

[0149] This third rule unifies the mapping rules for control information at both the transmitter and receiver ends, allowing the first control information to be received and decoded at the appropriate location. Furthermore, the control information's early placement in the time domain facilitates its use in decoding subsequent information. Furthermore, carrying control information on a shared channel allows the first control information to contain more bits, thereby indicating more content and facilitating subsequent expansion.

[0150] Optionally, the second control channel is adjacent to the PSSCH frequency domain position and can be determined by at least one of the following: protocol pre-definition, network pre-configuration, network configuration, radio resource control RRC signaling indication, DCI indication, and third control information indication.

[0151] In the embodiment of the present application, when the terminal sends the first control information through the first shared channel, at least one of the following conditions may be met:

[0152] a) Each first shared channel transmission is associated with a second control channel.

[0153] In this case, only one control channel carries the SA, and the rest of the control information is placed in the first shared channel. The second control channel carries third control information related to the first shared channel, and the first shared channel carries first control information related to itself.

[0154] b) Each first shared channel transmission is associated with a second control channel and a first control channel.

[0155] In this case, there are two control channels, one carrying the SA and the other carrying the first control information, which satisfies any of the following conditions:

[0156] The second control channel carries third control information related to the first shared channel, the first control channel carries first control information related to the first shared channel, and the first shared channel carries related second control information;

[0157] The second control channel carries third control information related to the first shared channel, and the first control channel carries first control information related to the first shared channel.

[0158] In this embodiment of the present application, when the terminal receives the first shared channel, at least one of the following conditions may be met:

[0159] 1) decoding the first shared channel according to the first control information carried by the first control channel and the first shared channel resource configuration configured by the higher layer;

[0160] 2) decoding the PSSCH according to the second control information carried by the first shared channel and the first shared channel resource configuration configured by the higher layer;

[0161] 3) Do not decode more than one PSCCH at any PSCCH candidate resource location; that is, the terminal is not required to decode more than one PSCCH at any PSCCH candidate resource location;

[0162] 4) Do not decode more than one first control channel in any first control channel candidate resource position; that is, the terminal is not required to decode more than one PSCCH-1 in any PSCCH-1 candidate resource position;

[0163] 5) Obtain the indication field content by decoding the first control information and / or the second control information in the first shared channel.

[0164] The present application is described in detail below with reference to specific examples.

[0165] Example 1

[0166] On the basis of the NR terminal sending control information SA to be compatible with the resource selection rules of LTE Sidelink, due to the limited number of reserved bits of SA, the content that can be indicated is limited, so it is necessary to send the first control information. The first control information is carried on PSCCH-1.

[0167] First, the first control information can reuse / multiplex NR R16 / R17 1 st SCI design allows the reuse / multiplexing of NR R16 / R17 frame structures and other designs while separating the SA and PSSCH frequency domains, thereby achieving compatibility with NR R16 / R17 terminals.

[0168] Secondly, without considering compatibility with NR R16 / R17 terminals, if the control information SA does not indicate information such as PSFCH overhead and Beta_offset, it can be sent by the first control information. If the second control information indicates partial control information, the first control information can only send content related to demodulation of the second control information, such as PSFCH overhead, Beta_offset, and destination ID. If the second control information does not exist, the first control information can send all control information except SA. In this case, it is no longer necessary to indicate Beta_offset and the second control information format.

[0169] like Figure 3 and Figure 4 As shown, SA can be sent in the entire slot, and the first control information can be sent in the second symbol. In the case of sending more content, the first control information can occupy the entire bandwidth, such as Figure 3 As shown, N sub-channels can also be occupied, such as Figure 4 As shown, the occupied sub-channels Sub1 and Sub2. Figure 4 As shown, in the case where the second control information exists, the second control information can be sent in the fourth symbol.

[0170] Example 2

[0171] On the basis of the NR terminal sending control information SA to be compatible with the resource selection rules of LTE Sidelink, due to the limited number of reserved bits of SA, the content that can be indicated is limited, so it is necessary to send the first control information. The first control information is carried on PSCCH-1.

[0172] At this time, if the problem of excessive number of bits occupied by the first control information is no longer necessary, the first control information can send all control information except SA. Figure 3 As shown, the first control information can be considered to occupy the entire bandwidth in the frequency domain, and the second symbol can be ignored when calculating TBS. If it occupies part of the subchannel, SA needs a Beta_offset indication to calculate the number of REs occupied by the first control information.

[0173] Example 3

[0174] Taking NR terminal as an example, when reusing / multiplexing the two SCI designs of NR, the second control information can be sent. The indication field of the second control information can reuse NR 2 nd The second control information is an indication field of the SCI and is carried on the PSSCH-1. The format and Beta_offset indication of the second control information are indicated by the first control information.

[0175] At this time, the second control information can be mapped starting from the fourth symbol, such as Figure 5 Alternatively, mapping may be started from the first symbol not used for DMRS, as shown in Figure 5 Or, mapping starts from the symbol carrying the first control information, and the first control information FDM, such as Figure 6 shown.

[0176] Example 4

[0177] A format 1 of the first control information of an NR terminal may be as follows:

[0178] i) Priority indication field; for example, used to indicate the priority of the currently transmitted data.

[0179] ii) Frequency domain resource indication field; for example, used to indicate the frequency domain position of reserved resources.

[0180] iii) Time domain resource indication field; for example, used to indicate the relative time domain position of the reserved resources.

[0181] iv) Reservation period indication field; for example, used to indicate the period value of periodic reservation.

[0182] v) DMRS pattern indication field; for example, used to indicate which pattern is used for DMRS.

[0183] vi) A format indication field for the second control information; for example, used to indicate the format of the possible next SCI, ie, the second control information.

[0184] ⅶ) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount of information such as the number of modulation symbols.

[0185] ⅷ) DMRS port quantity indication field; for example, used to indicate the port quantity.

[0186] ix) MCS indication field; for example, used to indicate the MCS level.

[0187] x) Additional MCS indication field; for example, used for additional MCS indication.

[0188] xi) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0189] At this time, the first control information is the same as the R16 NR 1st SCI and is applicable to the case of compatibility with R16 NR. The SA sent by the NR terminal can be used only for the LTE terminal to identify the reserved resources of the NR terminal and perform resource selection to achieve the purpose of co-frequency coexistence.

[0190] Example 5

[0191] Format 2 of the first control information of an NR terminal may be as follows:

[0192] i) DMRS pattern indication field; for example, used to indicate which pattern is used for DMRS.

[0193] ii) A format indication field for the second control information; for example, used to indicate the format of the possible next SCI, ie, the second control information.

[0194] iii) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount for calculating the number of modulation symbols and other information.

[0195] iv) DMRS port quantity indication field; for example, used to indicate the port quantity.

[0196] v) Additional MCS indication field; for example, used for additional MCS indication.

[0197] xi) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0198] In this case, the first control information only sends information not sent by the SA, compared to Example 4. If the DMRS pattern is defined as reusing / multiplexing the LTE DMRS pattern, the DMRS pattern indication field and / or the DMRSport number indication field may be removed.

[0199] Example 6

[0200] A format 3 of the first control information of an NR terminal may be as follows:

[0201] i) Priority indication field; for example, used to indicate the priority of the currently transmitted data.

[0202] ii) Frequency domain resource indication field; for example, used to indicate the frequency domain position of reserved resources.

[0203] iii) Time domain resource indication field; for example, used to indicate the relative time domain position of the reserved resources.

[0204] iv) Reservation period indication field; for example, used to indicate the period value of periodic reservation.

[0205] v) DMRS pattern indication field; for example, used to indicate which pattern is used for DMRS.

[0206] vi) A format indication field for the second control information; for example, used to indicate the format of the possible next SCI, ie, the second control information.

[0207] ⅶ) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount of information such as the number of modulation symbols.

[0208] ⅷ) DMRS port quantity indication field; for example, used to indicate the port quantity.

[0209] ix) MCS indication field; for example, used to indicate the MCS level.

[0210] x) Additional MCS indication field; for example, used for additional MCS indication.

[0211] xi) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0212] xii) HARQ process association indication field; for example, used to indicate that the reserved resources in multiple HARQ processes belong to the same TB, or SL process, MAC PDU (Protocol Data Unit), etc.

[0213] At this time, the first control information is the same as the R16 NR 1st SCI and is applicable to the case of compatibility with R16 NR. At the same time, when non-periodic reservation is performed by associating multiple HARQ processes with the same TB, an indication field indicating the HARQ association indication can be added to the reserved bit.

[0214] Example 7

[0215] A format 4 of the first control information of an NR terminal may be as follows:

[0216] i) DMRS pattern indication field; for example, used to indicate which pattern is used for DMRS.

[0217] ii) A format indication field for the second control information; for example, used to indicate the format of the possible next SCI, ie, the second control information.

[0218] iii) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount for calculating the number of modulation symbols and other information.

[0219] iv) DMRS port quantity indication field; for example, used to indicate the port quantity.

[0220] v) Additional MCS indication field; for example, used for additional MCS indication.

[0221] ⅵ) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0222] ⅶ) Destination ID indication field; for example, used to indicate the ID of the receiving UE.

[0223] In this case, as in Example 5, the first control information also includes a destination ID indicator, which allows the receiving terminal to determine whether the data is intended for it based on the destination ID information. Therefore, if the data is not intended for it, it can sense the source ID without further checking the next level of control information. Furthermore, if the reserved bits are sufficient, a source ID indicator can also be sent in addition to the above.

[0224] Example 8

[0225] A format 5 of the first control information of an NR terminal may be as follows:

[0226] i) A format indication field for the second control information; for example, used to indicate the format of the possible next SCI, ie, the second control information.

[0227] ii) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount of information such as the number of modulation symbols.

[0228] iii) Additional MCS indication field; for example, used for additional MCS indication.

[0229] iv) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0230] v) Destination ID indication field; for example, used to indicate the ID of the receiving UE.

[0231] At this point, compared to Example 7, this example takes into account that when NR reuses the LTE DMRS design and the number of ports is 1, there is no need to indicate DMRS-related information. Furthermore, if the number of reserved bits is sufficient, a source ID indication can also be sent on the basis of the above.

[0232] Example 9

[0233] When the second control information does not exist, the formats of the first control information are divided into two types, such as SCI format 1-C and SCI format 1-D, which are described below respectively.

[0234] An SCI format 1-C is as follows:

[0235] i) Priority indication field; for example, used to indicate the priority of the currently transmitted data.

[0236] ii) Frequency domain resource indication field; for example, used to indicate the frequency domain position of reserved resources.

[0237] iii) Time domain resource indication field; for example, used to indicate the relative time domain position of the reserved resources.

[0238] iv) Reservation period indication field; for example, used to indicate the period value of periodic reservation.

[0239] v) DMRS pattern indication field; for example, used to indicate which pattern is used for DMRS.

[0240] ⅵ) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount for calculating the number of modulation symbols and other information.

[0241] ⅶ) DMRS port quantity indication field; for example, used to indicate the number of ports.

[0242] ⅷ) MCS indication field; for example, used to indicate the MCS level.

[0243] ix) Additional MCS indication field; for example, used for additional MCS indication.

[0244] x) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0245] xi) HARQ process number indication field; for example, used to indicate the number of HARQ processes.

[0246] xii)New data indication field.

[0247] xiii) Redundancy version indication field.

[0248] xiv) Source ID indication field; for example, used to indicate the ID of the sending UE.

[0249] xv) Destination ID indication field; for example, used to indicate the ID of the receiving UE.

[0250] xvi) HARQ feedback switch indication field; for example, used to indicate whether HARQ feedback is allowed.

[0251] xvii) Transmission type indication field; for example, used to indicate whether the current transmission is unicast, multicast or broadcast.

[0252] xviii) CSI request indication field; for example, used to trigger CSI reporting.

[0253] Another SCI format 1-C is as follows:

[0254] i) DMRS pattern indication field; for example, used to indicate which pattern is used for DMRS.

[0255] ii) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount of information such as the number of modulation symbols.

[0256] iii) DMRS port quantity indication field; for example, used to indicate the number of ports.

[0257] iv) Additional MCS indication field; for example, used for additional MCS indication.

[0258] v) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0259] ⅵ) HARQ process number indication field; for example, used to indicate the number of HARQ processes.

[0260] ⅶ) New data indication field.

[0261] ⅷ) Redundancy version indication field.

[0262] ix) Source ID indication field; for example, used to indicate the ID of the sending UE.

[0263] x) Destination ID indication field; for example, used to indicate the ID of the receiving UE.

[0264] xi) HARQ feedback switch indication field; for example, used to indicate whether HARQ feedback is allowed.

[0265] xii) Transmission type indication field; for example, used to indicate whether the current transmission is unicast, multicast or broadcast.

[0266] xiii) CSI request indication field; for example, used to trigger CSI reporting.

[0267] Another SCI format 1-C is as follows:

[0268] i) Beta_offset indication field; for example, used to indicate relevant information for determining the control information carried on the first shared channel, such as an intermediate amount for calculating the number of modulation symbols and other information.

[0269] ii) Additional MCS indication field; for example, used for additional MCS indication.

[0270] iii) PSFCH overhead indication field; for example, used to indicate PSFCH overhead related information.

[0271] iv) HARQ process number indication field; for example, used to indicate the number of HARQ processes.

[0272] v) New data indication field.

[0273] ⅵ) Redundancy version indication field.

[0274] ⅶ) Source ID indication field; for example, used to indicate the ID of the sending UE.

[0275] ⅷ) Destination ID indication field; for example, used to indicate the ID of the receiving UE.

[0276] ix) HARQ feedback switch indication field; for example, used to indicate whether HARQ feedback is allowed.

[0277] x) Transmission type indication field; for example, used to indicate whether the current transmission is unicast, multicast or broadcast.

[0278] xi) CSI request indication field; for example, used to trigger CSI reporting.

[0279] Another SCI format 1-C is as follows:

[0280] i) HARQ process number indication field; for example, used to indicate the number of HARQ processes.

[0281] ii) New data indication field.

[0282] ⅲ) Redundancy version indication field.

[0283] iv) Source ID indication field; for example, used to indicate the ID of the sending UE.

[0284] v) Destination ID indication field; for example, used to indicate the ID of the receiving UE.

[0285] ⅵ) HARQ feedback switch indication field; for example, used to indicate whether HARQ feedback is allowed.

[0286] ⅶ) Transmission type indication field; for example, used to indicate whether the current transmission is unicast, multicast or broadcast.

[0287] ⅷ) CSI request indication field; for example, used to trigger CSI reporting.

[0288] It should be noted that the difference between SCI format 1-D and SCI format 1-C is that the transmission type indication and CSI request indication of SCI format 1-C are replaced with the Zone ID indication and communication range indication. SCI format 1-D will not be further described here.

[0289] It should be noted that the information indication method provided in the embodiments of the present application can be executed by an information indication device, or by a control module in the information indication device for executing the information indication method. In the embodiments of the present application, the information indication device provided in the embodiments of the present application is described by taking the information indication device executing the information indication method as an example.

[0290] See Figure 7 , Figure 7 This is a structural diagram of an information indication device provided in an embodiment of the present application, which is applied to a terminal, such as an NR terminal. Figure 7 As shown, the information indicating device 70 includes:

[0291] The transceiver module 71 is configured to send or receive at least one of the following: first control information and second control information;

[0292] The first control information is carried on a first control channel or a first shared channel;

[0293] The second control information is carried on the first shared channel.

[0294] Optionally, the first control information includes at least one of the following:

[0295] Priority indication field;

[0296] Frequency domain resource indication field;

[0297] Time domain resource indication field;

[0298] Reservation period indication field;

[0299] DMRS pattern indication field;

[0300] The format indication field of the second control information;

[0301] Beta_offset indicator field;

[0302] DMRS port quantity indication field;

[0303] MCS indicator field;

[0304] Additional MCS indication field;

[0305] PSFCH overhead indication field;

[0306] HARQ process number indication field;

[0307] New data indicator field;

[0308] Redundancy version indication field;

[0309] Source ID indication field;

[0310] Destination ID indication field;

[0311] HARQ feedback switch indication field;

[0312] Propagation type indication field;

[0313] CSI request indication field;

[0314] The region ID indicates the domain;

[0315] Communication range indication domain;

[0316] HARQ process association indication field.

[0317] Optionally, the setting of the indication field in the first control information satisfies at least one of the following:

[0318] Setting a priority indication field according to the priority of the TB indicated by the first information, or the highest priority among the priorities of the TB;

[0319] Setting the MCS indication field according to the content indicated by the first information;

[0320] Setting a frequency domain resource indication field and / or a time domain resource indication field according to the resources selected by the first information;

[0321] Setting a frequency domain resource indication field and a time domain resource indication field according to the time and frequency domain resource positions of different HARQ processes corresponding to the same TB selected by the first information;

[0322] Setting the format indication field of the second control information according to the content indicated by the first information;

[0323] Setting a reservation period indication field according to the content indicated by the first information;

[0324] According to the content indicated by the first information, at least one of the following items is set: a HARQ process number indication field, a new data indication field, a source ID indication field, a destination ID indication field, a HARQ feedback switch indication field, a propagation type indication field, and a CSI feedback request indication field;

[0325] According to the content indicated by the first information, at least one of the following items is set: a HARQ process number indication field, a new data indication field, a source ID indication field, a destination ID indication field, a HARQ feedback switch indication field, an area ID indication field, and a communication range indication field;

[0326] When the terminal uses resource allocation mode 1, the frequency domain resource indication field and / or the time domain resource indication field are set according to the indication information of the dynamic authorization or the configuration authorization; the resource allocation mode 1 is for the network side device such as the base station to schedule resources.

[0327] The first information includes at least one of the following: high-layer indication information, DCI, and SCI.

[0328] Optionally, the first control channel satisfies at least one of the following:

[0329] Using the first channel format;

[0330] The time-frequency domain mapping rule is the first rule;

[0331] The first rule satisfies at least one of the following:

[0332] Mapping starts from the second symbol of the PSSCH time slot, PSSCH and / or SL resource, occupying X symbols, where X is an integer greater than 0;

[0333] Occupies the entire bandwidth in the frequency domain, or occupies N sub-channels, where N is an integer greater than 0;

[0334] When the second control channel is separated from the PSSCH in the frequency domain, the frequency domain mapping starts mapping from the index of the lowest physical resource block PRB of the lowest subchannel of the resource selected for data transmission;

[0335] When the second control channel is adjacent to the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the first PRB, where the first PRB is the lowest PRB after the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information;

[0336] The third control information is carried on the second control channel.

[0337] Optionally, X is equal to 1, or X is equal to 2 or 3 as indicated by a high-level parameter;

[0338] And / or, the N is determined by at least one of the following: protocol pre-definition, network pre-configuration, terminal pre-configuration, network configuration, terminal configuration;

[0339] And / or, the second control channel is separated from or adjacent to the PSSCH frequency domain position, which is determined by at least one of the following: protocol pre-definition, network pre-configuration, network configuration, radio resource control RRC signaling indication, DCI indication, and third control information indication.

[0340] Optionally, the first shared channel satisfies at least one of the following:

[0341] Use the second channel format, and the maximum number of layers is 1 or 2;

[0342] The time-frequency domain mapping rule is the second rule;

[0343] The second rule satisfies at least one of the following:

[0344] Frequency domain mapping first, then time domain mapping;

[0345] Mapping starts from the first symbol of the time unit or the sidelink SL resource;

[0346] Mapping starts from the first symbol of the symbol mapped with DMRS;

[0347] Mapping starts from the first symbol after the first DMRS symbol;

[0348] Mapping starts from the symbol before the first DMRS symbol;

[0349] The corresponding resource unit RE in the resource block RB corresponding to the first control information is not used for at least one of the following: DMRS, phase tracking reference signal PT-RS, control channel, channel state information reference signal CSI-RS;

[0350] At least one of the following items does not exist in the symbol corresponding to the first control information: DMRS, PT-RS, CSI-RS.

[0351] Optionally, the first control channel occupies M symbols in the time domain and a preset number of PRBs in the frequency domain, where M is an integer greater than 0.

[0352] Optionally, M is a value determined by at least one of the following: protocol pre-definition, network pre-configuration, terminal pre-configuration, network configuration, or terminal configuration;

[0353] And / or, the preset number of PRBs satisfies at least one of the following: the number of PRBs is indicated by a higher layer, starts from the lowest PRB of the lowest subchannel corresponding to the PSSCH, and starts from the lowest PRB after excluding the PRB occupied by the third control information from the lowest subchannel corresponding to the PSSCH.

[0354] Optionally, the information indicating device 70 further includes:

[0355] an acquisition module, configured to acquire at least one of the following: relevant information on resource reservation, format information of second control information, PSFCH overhead information, terminal ID information, propagation type information, HARQ feedback information, CSI request information, and relevant information on HARQ processes;

[0356] And / or, assuming that the number of reserved bits is an arbitrary value when decoding the first control information.

[0357] Optionally, the second control information satisfies at least one of the following:

[0358] Using the first indicator field format;

[0359] The time-frequency domain mapping rule is the third rule;

[0360] The third rule satisfies at least one of the following:

[0361] Mapping starts from the first symbol of the time unit and / or SL resource that is not used for DMRS;

[0362] Mapping starts from the first symbol in which the time unit and / or SL resource is not used for the symbol of the first control information;

[0363] Mapping starts from the first symbol of a time unit and / or SL resource that is not used for DMRS and the first control information;

[0364] Mapping starts from the first DMRS symbol in the time slot where the first shared channel is located;

[0365] Mapping starts from the first symbol after the DMRS symbol in the time slot where the first shared channel is located;

[0366] Mapping starts from the first symbol where the first control information is located;

[0367] When the second control channel is adjacent to the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the first PRB, where the first PRB is the lowest PRB after the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information, and the third control information is carried on the second control channel;

[0368] The corresponding RE in the corresponding RB is not used for at least one of the following: DMRS, PT-RS, first control channel, CSI-RS;

[0369] At least one of the following does not exist in the corresponding symbol: DMRS, PT-RS, CSI-RS.

[0370] Optionally, when the transceiver module 71 sends the first control information via the first shared channel, each first shared channel transmission is associated with a second control channel;

[0371] And / or, each first shared channel transmission is associated with a second control channel and a first control channel.

[0372] Optionally, when the terminal receives the first shared channel, at least one of the following conditions is met:

[0373] decoding the first shared channel according to the first control information carried by the first control channel and the first shared channel resource configuration configured by a higher layer;

[0374] decoding the PSSCH according to the second control information carried by the first shared channel and the first shared channel resource configuration configured by the higher layer;

[0375] Do not decode more than one PSCCH at any one PSCCH candidate resource location;

[0376] not decoding more than one first control channel at any one first control channel candidate resource location;

[0377] The indication field content is acquired by decoding the first control information and / or the second control information in the first shared channel.

[0378] The information indication device in the embodiments of the present application can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal can include but is not limited to the types of terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an ATM or a self-service machine, etc., which are not specifically limited in the embodiments of the present application.

[0379] The information indicating device 70 provided in the embodiment of the present application can realize Figure 2 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0380] Optional, such as Figure 8 As shown, an embodiment of the present application also provides a terminal 80, including a processor 81, a memory 82, and a program or instruction stored in the memory 82 and executable on the processor 81. When the program or instruction is executed by the processor 81, each process of the above-mentioned information indication method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0381] This embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface being configured to send or receive at least one of the following: first control information and second control information; the first control information being carried on a first control channel or a first shared channel; and the second control information being carried on a first shared channel. This terminal embodiment corresponds to the aforementioned information indication method embodiment. The various implementation processes and methods of the aforementioned method embodiment are applicable to this embodiment and can achieve the same technical effects. To avoid repetition, they are not further described here.

[0382] Specifically, Figure 9 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0383] The terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and at least some of the components of a processor 910.

[0384] Those skilled in the art will understand that the terminal 900 may also include a power supply (such as a battery) to power each component. The power supply can be logically connected to the processor 910 through a power management system, thereby realizing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 9 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0385] It should be understood that in an embodiment of the present application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, and the graphics processor 9041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0386] In this embodiment of the present application, the radio frequency unit 901 receives downlink data from the network-side device and transmits it to the processor 910 for processing. Furthermore, the radio frequency unit 901 transmits uplink data to the network-side device. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0387] The memory 909 can be used to store software programs or instructions and various data. The memory 909 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, at least one application program or instruction required for a function (such as a sound playback function, an image playback function, etc.). In addition, the memory 909 may include a high-speed random access memory and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0388] Processor 910 may include one or more processing units. Optionally, processor 910 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs or instructions, while the modem processor primarily processes wireless communications, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 910.

[0389] The radio frequency unit 901 is configured to send or receive at least one of the following: first control information and second control information; the first control information is carried on the first control channel or the first shared channel; and the second control information is carried on the first shared channel.

[0390] The terminal 900 provided in the embodiment of the present application can realize Figure 2 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0391] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned information indication method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0392] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[0393] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned information indication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0394] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0395] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0396] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in each embodiment of the present application.

[0397] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An information indication method, characterized in that: include: The terminal sends or receives first control information; The first control information is carried on a first shared channel; Each of the first shared channel transmissions is associated with a second control channel; the second control channel carries third control information related to the first shared channel, and the first shared channel carries first control information related to itself; The third control information adopts a control information format under the first network standard, and the first control information adopts a control information format under a non-first network standard; the third control information is used to indicate resource reservation related information.

2. The method according to claim 1, characterized in that The first control information includes at least one of the following: Priority indication field; Frequency domain resource indication field; Time domain resource indication field; Reservation period indication field; Demodulation reference signal DMRS pattern indication field; The format indication field of the second control information; Beta_offset indicator field; DMRS port quantity indication field; Modulation and coding strategy MCS indication field; Additional MCS indication field; Physical sidelink feedback channel PSFCH overhead indication field; Hybrid automatic repeat request HARQ process number indication field; New data indication field; Redundancy version indication field; Source ID indication field; Destination ID indication field; HARQ feedback switch indication field; Propagation type indication field; Channel state information CSI request indication field; The region ID indicates the domain; Communication range indication domain; HARQ process association indication field.

3. The method according to claim 2, characterized in that The setting of the indication field in the first control information satisfies at least one of the following: Setting a priority indication field according to the priority of the transport block TB indicated by the first information, or the highest priority among the priorities of the TB; Setting the MCS indication field according to the content indicated by the first information; Setting a frequency domain resource indication field and / or a time domain resource indication field according to the resources selected by the first information; Setting a frequency domain resource indication field and a time domain resource indication field according to the time and frequency domain resource positions of different HARQ processes corresponding to the same TB selected by the first information; Setting the format indication field of the second control information according to the content indicated by the first information; Setting a reservation period indication field according to the content indicated by the first information; According to the content indicated by the first information, at least one of the following items is set: a HARQ process number indication field, a new data indication field, a source ID indication field, a destination ID indication field, a HARQ feedback switch indication field, a propagation type indication field, and a CSI feedback request indication field; According to the content indicated by the first information, at least one of the following items is set: a HARQ process number indication field, a new data indication field, a source ID indication field, a destination ID indication field, a HARQ feedback switch indication field, an area ID indication field, and a communication range indication field; When the terminal uses resource allocation mode 1, setting a frequency domain resource indication field and / or a time domain resource indication field according to indication information of a dynamic authorization or a configuration authorization; The first information includes at least one of the following: high-layer indication information, downlink control information DCI, and sidelink control information SCI.

4. The method according to claim 1, wherein The first control information is also carried on a first control channel, and the first control channel satisfies at least one of the following: Using the first channel format; The time-frequency domain mapping rule is the first rule; The first rule satisfies at least one of the following: Mapping starts from the second symbol of the time slot where the physical sidelink shared channel PSSCH is located, the PSSCH and / or the sidelink SL resource, and occupies X symbols, where X is an integer greater than 0; Occupies the entire bandwidth in the frequency domain, or occupies N sub-channels, where N is an integer greater than 0; When the second control channel is separated from the PSSCH in the frequency domain, the frequency domain mapping starts mapping from the index of the lowest physical resource block PRB of the lowest subchannel of the resource selected for data transmission; When the second control channel is adjacent to the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the first PRB, where the first PRB is the lowest PRB after the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information; The third control information is carried on the second control channel.

5. The method according to claim 4, characterized in that The X is equal to 1, or the X is equal to 2 or 3 as indicated by a high-level parameter; and / or, The N is determined by at least one of the following: protocol pre-definition, network pre-configuration, terminal pre-configuration, network configuration, and terminal configuration; and / or, The second control channel is separated from or adjacent to the PSSCH frequency domain position, and is determined by at least one of the following: protocol pre-definition, network pre-configuration, network configuration, radio resource control RRC signaling indication, DCI indication, and third control information indication.

6. The method according to claim 1, characterized in that The first shared channel satisfies at least one of the following: Use the second channel format, and the maximum number of layers is 1 or 2; The time-frequency domain mapping rule is the second rule; The second rule satisfies at least one of the following: Frequency domain mapping first, then time domain mapping; Mapping starts from the second symbol of the time unit or sidelink SL resource; Mapping starts from the first symbol of the symbol mapped with DMRS; Mapping starts from the first symbol after the first DMRS symbol; Mapping starts from the symbol before the first DMRS symbol; The corresponding resource unit RE in the resource block RB corresponding to the first control information is not used for at least one of the following: DMRS, phase tracking reference signal PT-RS, control channel, channel state information reference signal CSI-RS; At least one of the following items does not exist in the symbol corresponding to the first control information: DMRS, PT-RS, CSI-RS.

7. The method according to claim 1, characterized in that The first control information is also carried on a first control channel. The first control channel occupies M symbols in the time domain and a preset number of PRBs in the frequency domain, where M is an integer greater than 0.

8. The method according to claim 7, characterized in that M is a value determined by at least one of the following: protocol pre-definition, network pre-configuration, terminal pre-configuration, network configuration, and terminal configuration; and / or, The preset number of PRBs satisfies at least one of the following: the number of PRBs is indicated by a higher layer, starts from the lowest PRB of the lowest subchannel corresponding to the PSSCH, and starts from the lowest PRB after excluding the PRB occupied by the third control information from the lowest subchannel corresponding to the PSSCH.

9. The method according to claim 1, characterized in that After receiving the first control information, the method further includes: Obtain at least one of the following: relevant information of resource reservation, format information of second control information, PSFCH overhead information, terminal ID information, propagation type information, HARQ feedback information, CSI request information, and relevant information of HARQ process; and / or, When decoding the first control information, it is assumed that the number of reserved bits is an arbitrary value.

10. The method according to claim 1, characterized in that The method further comprises: The terminal sends or receives second control information, where the second control information satisfies at least one of the following: Using the first indicator field format; The time-frequency domain mapping rule is the third rule; The third rule satisfies at least one of the following: Mapping starts from the first symbol of the time unit and / or SL resource that is not used for DMRS; Mapping starts from the first symbol in which the time unit and / or SL resource is not used for the symbol of the first control information; Mapping starts from the first symbol of a time unit and / or SL resource that is not used for DMRS and the first control information; Mapping starts from the first DMRS symbol in the time slot where the first shared channel is located; Mapping starts from the first symbol after the DMRS symbol in the time slot where the first shared channel is located; Mapping starts from the first symbol where the first control information is located; When the second control channel is adjacent to the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the first PRB, where the first PRB is the lowest PRB after the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information, and the third control information is carried on the second control channel; The corresponding RE in the corresponding RB is not used for at least one of the following: DMRS, PT-RS, first control channel, CSI-RS; At least one of the following does not exist in the corresponding symbol: DMRS, PT-RS, CSI-RS.

11. The method according to claim 1, wherein Each first shared channel transmission is associated with a second control channel and a first control channel.

12. The method according to claim 11, characterized in that When each first shared channel transmission is associated with a second control channel and a first control channel, any one of the following is satisfied: The second control channel carries third control information related to the first shared channel, the first control channel carries first control information related to the first shared channel, and the first shared channel carries related second control information; The second control channel carries third control information related to the first shared channel, and the first control channel carries first control information related to the first shared channel.

13. The method according to claim 1, wherein When the terminal receives the first shared channel, at least one of the following conditions is met: decoding the first shared channel according to the first control information carried by the first control channel and the first shared channel resource configuration configured by a higher layer; decoding the PSSCH according to the second control information carried by the first shared channel and the first shared channel resource configuration configured by the higher layer; Do not decode more than one PSCCH at any one PSCCH candidate resource location; not decoding more than one first control channel at any one first control channel candidate resource location; The indication field content is acquired by decoding the first control information and / or the second control information in the first shared channel.

14. An information indicating device, characterized in that: include: a transceiver module, configured to send or receive first control information; The first control information is carried on a first shared channel; Each of the first shared channel transmissions is associated with a second control channel; the second control channel carries third control information related to the first shared channel, and the first shared channel carries first control information related to itself; The third control information adopts a control information format under the first network standard, and the first control information adopts a control information format under a non-first network standard; the third control information is used to indicate resource reservation related information.

15. The device according to claim 14, characterized in that The first control information includes at least one of the following: Priority indication field; Frequency domain resource indication field; Time domain resource indication field; Reservation period indication field; DMRS pattern indication field; The format indication field of the second control information; Beta_offset indicator field; DMRS port quantity indication field; MCS indicator field; Additional MCS indication field; PSFCH overhead indication field; HARQ process number indication field; New data indicator field; Redundancy version indication field; Source ID indication field; Destination ID indication field; HARQ feedback switch indication field; Propagation type indication field; CSI request indication field; The region ID indicates the domain; Communication range indication domain; HARQ process association indication field.

16. The device according to claim 14, characterized in that The first control information is also carried on a first control channel, and the first control channel satisfies at least one of the following: Using the first channel format; The time-frequency domain mapping rule is the first rule; The first rule satisfies at least one of the following: Mapping starts from the second symbol of the PSSCH time slot, PSSCH and / or SL resource, occupying X symbols, where X is an integer greater than 0; Occupies the entire bandwidth in the frequency domain, or occupies N sub-channels, where N is an integer greater than 0; When the second control channel is separated from the PSSCH in the frequency domain, the frequency domain mapping starts mapping from the index of the lowest physical resource block PRB of the lowest subchannel of the resource selected for data transmission; When the second control channel is adjacent to the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the first PRB, where the first PRB is the lowest PRB after the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information; The third control information is carried on the second control channel.

17. The device according to claim 14, characterized in that The first shared channel satisfies at least one of the following: Use the second channel format, and the maximum number of layers is 1 or 2; The time-frequency domain mapping rule is the second rule; The second rule satisfies at least one of the following: Frequency domain mapping first, then time domain mapping; Mapping starts from the second symbol of the time unit or sidelink SL resource; Mapping starts from the first symbol of the symbol mapped with DMRS; Mapping starts from the first symbol after the first DMRS symbol; Mapping starts from the symbol before the first DMRS symbol; The corresponding resource unit RE in the resource block RB corresponding to the first control information is not used for at least one of the following: DMRS, phase tracking reference signal PT-RS, control channel, channel state information reference signal CSI-RS; At least one of the following items does not exist in the symbol corresponding to the first control information: DMRS, PT-RS, CSI-RS.

18. The device according to claim 14, characterized in that The transceiver module is further configured to send or receive second control information, wherein the second control information satisfies at least one of the following: Using the first indicator field format; The time-frequency domain mapping rule is the third rule; The third rule satisfies at least one of the following: Mapping starts from the first symbol of the time unit and / or SL resource that is not used for DMRS; Mapping starts from the first symbol in which the time unit and / or SL resource is not used for the symbol of the first control information; Mapping starts from the first symbol of a time unit and / or SL resource that is not used for DMRS and the first control information; Mapping starts from the first DMRS symbol in the time slot where the first shared channel is located; Mapping starts from the first symbol after the DMRS symbol in the time slot where the first shared channel is located; Mapping starts from the first symbol where the first control information is located; When the second control channel is adjacent to the PSSCH in the frequency domain, the frequency domain mapping starts from the index of the first PRB, where the first PRB is the lowest PRB after the lowest subchannel where the PSSCH is located, excluding the PRB occupied by the third control information, and the third control information is carried on the second control channel; The corresponding RE in the corresponding RB is not used for at least one of the following: DMRS, PT-RS, first control channel, CSI-RS; At least one of the following does not exist in the corresponding symbol: DMRS, PT-RS, CSI-RS.

19. The device according to claim 14, characterized in that Each first shared channel transmission is associated with a second control channel and a first control channel.

20. The device according to claim 14, wherein When receiving the first shared channel, at least one of the following is satisfied: decoding the first shared channel according to the first control information carried by the first control channel and the first shared channel resource configuration configured by a higher layer; decoding the PSSCH according to the second control information carried by the first shared channel and the first shared channel resource configuration configured by the higher layer; Do not decode more than one PSCCH at any one PSCCH candidate resource location; not decoding more than one first control channel at any one first control channel candidate resource location; The indication field content is acquired by decoding the first control information and / or the second control information in the first shared channel.

21. A terminal, characterized in that: The method comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the information indication method according to any one of claims 1 to 13.

22. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the information indication method according to any one of claims 1 to 13 are implemented.

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