Random access method and apparatus, and communication device

Abstract

The invention discloses a random access method and device and communication equipment, and belongs to the technical field of communication, and the random access method comprises the steps that backscatter communication BSC equipment sends first information to second equipment or first equipment; wherein the first information is used for random access of the second equipment.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a random access method, apparatus and communication equipment. Background Art

[0002] Random access (RA) is a fundamental function of mobile communication systems and a necessary step for establishing a signaling connection between a terminal and the network. Currently, the random access process can be categorized into contention-based (CBRA) RA and contention-free (CFRA) RA.

[0003] However, for the random access process provided in the related art, once the direct link channel between the network side and the terminal is poor, the terminal and the network side may not be able to achieve random access, which affects the communication performance. Summary of the Invention

[0004] The embodiments of the present application provide a random access method, apparatus, and communication device, which can implement random access between a terminal and a network side.

[0005] In a first aspect, a random access method is provided, including: a backscatter communication BSC device sends first information to a first device or a second device; wherein the first information is used for random access of the second device.

[0006] In a second aspect, a random access method is provided, including: a first device receiving first information sent by a backscatter communication BSC device; wherein the first information is used for random access of a second device.

[0007] According to a third aspect, a random access method is provided, including: a second device receiving first information sent by a BSC device; wherein the first information is used for random access of the second device.

[0008] In a fourth aspect, a random access apparatus is provided, comprising: a transmission module configured to send first information to a second device or a first device; wherein the first information is used for random access of the second device.

[0009] In a fifth aspect, a random access device is provided, comprising: a transmission module for receiving first information sent by a backscatter communication BSC device; wherein the first information is used for random access of a second device.

[0010] In a sixth aspect, a random access device is provided, characterized in that it includes: a transmission module for receiving first information sent by a BSC device; wherein the first information is used for random access of the second device.

[0011] In the seventh aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the method described in the first aspect, or implements the steps of the method described in the second aspect, or implements the steps of the method described in the third aspect.

[0012] In an eighth aspect, a communication device is provided, comprising a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect, or to implement the steps of the method described in the third aspect.

[0013] In a ninth aspect, a readable storage medium is provided, wherein a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the second aspect are implemented, or the steps of the method according to the third aspect are implemented.

[0014] In the tenth aspect, a wireless communication system is provided, comprising: a BSC device, a first device and a second device, wherein the BSC device can be used to perform the steps of the method described in the first aspect, the second device can be used to perform the steps of the method described in the third aspect, and the first device can be used to perform the steps of the method described in the second aspect.

[0015] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect, or implement the steps of the method described in the third aspect.

[0016] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0017] In an embodiment of the present application, the first information is sent to the second device or the first device through the BSC device, thereby enabling the BSC device to assist in information exchange between the first device and the second device to achieve random access of the second device, thereby solving the problems existing in the related art such as the poor direct link channel between the network side and the second device, which leads to the inability to achieve random access and the inability of the first device to know the existence of the second device, thereby effectively ensuring the communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a wireless communication system provided by an exemplary embodiment of the present application.

[0019] Figure 2 This is one of the flow charts of the random access method provided by an exemplary embodiment of the present application.

[0020] Figure 3 This is the second flowchart of the random access method provided by an exemplary embodiment of the present application.

[0021] Figure 4 This is the third flowchart of the random access method provided by an exemplary embodiment of the present application.

[0022] Figure 5 This is the fourth flowchart of the random access method provided by an exemplary embodiment of the present application.

[0023] Figure 6a This is one of the interactive flow diagrams of the random access method provided by an exemplary embodiment of the present application.

[0024] Figure 6b This is the second interactive flow diagram of the random access method provided by an exemplary embodiment of the present application.

[0025] Figure 6c This is the third interactive flow diagram of the random access method provided by an exemplary embodiment of the present application.

[0026] Figure 6d This is the fourth interactive flow diagram of the random access method provided by an exemplary embodiment of the present application.

[0027] Figure 6e This is the fifth interactive flow diagram of the random access method provided by an exemplary embodiment of the present application.

[0028] Figure 6f This is the sixth interactive flow diagram of the random access method provided by an exemplary embodiment of the present application.

[0029] Figure 6g This is the seventh interactive flow diagram of the random access method provided by an exemplary embodiment of the present application.

[0030] Figure 6h This is the eighth interactive flow diagram of the random access method provided by an exemplary embodiment of the present application.

[0031] Figure 7 This is the fifth flowchart of the random access method provided by an exemplary embodiment of the present application.

[0032] Figure 8 This is the sixth flowchart of the random access method provided by an exemplary embodiment of the present application.

[0033] Figure 9 This is one of the structural diagrams of a random access device provided by an exemplary embodiment of the present application.

[0034] Figure 10 This is the second structural diagram of the random access device provided by an exemplary embodiment of the present application.

[0035] Figure 11 This is the third structural diagram of the random access device provided by an exemplary embodiment of the present application.

[0036] Figure 12 It is a structural diagram of a communication device provided by an exemplary embodiment of the present application.

[0037] Figure 13 It is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application.

[0038] Figure 14 It is a structural diagram of a network side device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0039] 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.

[0040] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and 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, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0041] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0042] 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) or 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 systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0043] Figure 1 A schematic diagram of a wireless communication system applicable to the embodiments of the present application is shown. The wireless communication system includes a first device 11 , a second device 12 , and a backscatter communication (BSC) device 13 .

[0044] The first device 11 and the second device 12 can be terminals, network-side devices, dedicated readers, etc., and are not limited here.

[0045] Optionally, the terminal may be a mobile phone, a tablet personal computer, a laptop computer, 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), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (PC), an ATM or a self-service machine, and 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, etc. Among them, vehicle-mounted devices can also be called vehicle-mounted terminals, vehicle-mounted controllers, vehicle-mounted modules, vehicle-mounted components, vehicle-mounted chips, or vehicle-mounted units, etc. It should be noted that the specific type of terminal is not limited in the embodiments of this application.

[0046] The network-side device may include an access network device, which may also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS), or a wireless fidelity (WiFi) node. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B (home evolved NodeB), Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0047] The BSC device 13 may be a traditional radio frequency identification tag (RFID tag), a passive Internet of Things (IoT) device, a semi-passive IoT device, an active IoT device, or the like.

[0048] If the BSC device 13 is a passive IoT device, it may not have an energy storage capacitor or battery. In actual communication, it can rely on RF signals for power supply (the received RF signal is the power signal of the rectifier), does not have carrier generation capability, and has the lowest power consumption.

[0049] If the BSC device 13 is a semi-passive IoT device, it may have an energy storage capacitor or battery. In actual communication, it may rely on non-RF signals for power supply. Optionally, it may have a PA, LNA, or other active components. It does not have carrier generation capability and consumes more power than passive IoT devices.

[0050] If the BSC device 13 is an active IoT device, it has an energy storage capacitor or battery, can rely on non-RF signals for power supply, and has carrier generation capability. Compared with traditional RFID tags, passive IoT devices, and semi-passive IoT devices, its power consumption is the highest.

[0051] It is worth noting that, given that active IoT devices can autonomously generate carrier waves, they can assist terminals in random access (or initial access) in an active manner, and then switch to backscatter communication mode for communication, such as transmitting self-generated signals or backscattering signals. Passive and semi-passive IoT devices, on the other hand, can continue to backscatter signals after assisting terminals in random access (or initial access).

[0052] It is worth noting that the above-mentioned classification of BSC devices provided in this application is not exclusive, that is, this embodiment only provides possible classification characteristics of each BSC device.

[0053] In addition, in the aforementioned wireless communication system provided by the present application, when the first device 11 sends a signal to the BSC device 13 and the second device 12, the BSC device 13 can reflect the signal of the first device 11 and load its own information, and the second device 12 jointly demodulates the information sent by the first device 11 and the information sent by the BSC device 13.

[0054] Furthermore, for ease of understanding, a random access (RA) process involved below is briefly introduced by taking the network side and the terminal as examples.

[0055] (a) Contention-based random access procedure, which includes a four-step access process of messages (Msg) 1–Msg 4.

[0056] Msg1:

[0057] After completing RA resource configuration, the terminal must send the selected preamble on the selected Physical Random Access Channel (PRACH) occasion. The preamble sent is Msg1. When sending, the Random Access Radio Network Temporary Identifier (RA-RNTI) is calculated based on the selected PRACH occasion. Each PRACH occasion corresponds to a unique RA-RNTI. When subsequently receiving Msg2, the terminal must also monitor the Physical Downlink Control Channel (PDCCH) scrambled with its own RA-RNTI to determine whether it is a Random Access Response (RAR) sent to it.

[0058] Msg2:

[0059] Msg2 is the RAR message. After sending Msg1, the terminal will monitor the PDCCH within a window. The PDCCH will then indicate the location of the physical downlink shared channel (PDSCH), which contains the RAR.

[0060] RAR is a Medium Access Control Protocol Data Unit (MAC PDU), which consists of several MAC sub-PDUs and possible padding.

[0061] Msg3:

[0062] Msg3 is the third message in the random access process. For random access not in the connected state, Msg3 is mainly configured by higher layers. For random access in the connected state, Msg3 mainly contains the Cell Radio Network Temporary Identifier (C-RNTI).

[0063] Initial access in idle state: RRCSetupRequest

[0064] Radio Resource Control (RRC) connection reestablishment: RRCReestablishmentRequestSI request: RRCSystemInfoRequest

[0065] Cell handover: RRCReconfigurationComplete

[0066] Restoring access in the inactive state: RRCResumeRequest

[0067] For other random access in the CONNECTED state, such as uplink desynchronization and scheduling resource request when sending uplink data, Msg3 must include the terminal's existing C-RNT.

[0068] In general, Msg3 must contain a unique identifier of the terminal itself, whether this unique identifier is C-RNTI or other configuration from a higher layer, and then this unique identifier can be used for contention resolution.

[0069] Msg4:

[0070] After sending Msg3, the terminal starts a random access contention resolution timer (ra-ContentionResolutionTimer) and resets it when the Hybrid Automatic Repeat Request (HARQ) retransmits Msg3. The terminal continues to monitor the PDCCH until the timer expires or is stopped. If the ra-ContentionResolutionTimer expires, the terminal discards the TC-RNTI and considers contention resolution to have failed.

[0071] In both contention-based random access and non-contention-based random access, Msg2 sends RAR. The terminal monitors the RAR corresponding to the RA-RNTI within the RAR window.

[0072] Because contention-based random access can cause terminals to send the same preamble on the same PRACH resource, after receiving Msg2, the terminal must send Msg3 based on the uplink grant (UL grant) in the message. The terminal will include its identifier in Msg3, and a contention resolution timer will be started when Msg3 is sent. If the terminal receives Msg4 from the network device before the contention resolution timer expires, contention resolution is successful. Msg4 carries the terminal identifier. Based on the terminal identifier in Msg4, the terminal can determine whether it is its own Msg4 and, therefore, whether contention has been successful.

[0073] (b) Non-contention-based random access procedure, which includes the MsgA–MsgB two-step access procedure (2-step RA).

[0074] Compared to the contention-based random access process, 2-step RA is introduced to shorten access latency. This is a two-step RA process: the terminal sends MsgA to the network device, and then receives MsgB from the network device. MsgA includes the functions of Msg1 or Msg1 and Msg3, and MsgB includes the functions of Msg2 or Msg2 and Msg4.

[0075] Based on this, the technical solutions provided by the embodiments of the present application are described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0076] like Figure 2 FIG2 is a flow chart of a random access method 200 provided in an exemplary embodiment of the present application. The method 200 may be, but is not limited to, executed by a BSC device, and specifically may be executed by hardware and / or software installed in the BSC device. In this embodiment, the method 200 may include at least the following steps.

[0077] S210: The BSC device sends first information to the second device or the first device.

[0078] The first information is used for random access (or initial access) of the second device. That is, the BSC device can assist in information exchange between the second device and the first device by forwarding the first information, thereby establishing a random access process and resolving problems in the related art such as a poor direct link channel between the network side and the second device, which results in an inability to implement random access and an inability of the first device to know the existence of the second device, thereby effectively ensuring communication quality.

[0079] Optionally, the first device may be a network-side device, a dedicated reader / writer, or a terminal, and the second device may also be a network-side device, a dedicated reader / writer, or a terminal.

[0080] For example, when the first device is a network-side device, the second device may be a terminal, a network-side device, or a dedicated reader / writer. In the case where both the first device and the second device are network-side devices, the first device and the second device may be, but are not limited to, Integrated Access and Backhaul (IAB) nodes, etc.

[0081] For another example, when the first device is a terminal, the second device may be a network-side device (such as an IAB node) or a terminal or a dedicated reader / writer. In the case where the first device is a terminal and the second device is a network-side device, the first device has the ability to provide services to the network-side device (such as an IAB node).

[0082] Of course, the combination of the first device and the second device provided in this embodiment can be but is not limited to the aforementioned combination.

[0083] In addition, in one implementation, depending on the random access process, there may be multiple types of the first information used for random access, such as a random access message (such as a contention-based random access message or a non-contention-based random access message, etc.), an authentication request used by the first device to authenticate the second device during the random access process, one or more of the synchronization signal blocks (Synchronization Signal and PBCH block, SSB), etc. The SSB can be used for signal synchronization during the random access process, random access-related broadcast information, cell search, beam measurement, beam selection, beam recovery, etc., and is not limited here.

[0084] In this embodiment, the first information is sent to the second device or the first device via the BSC device, thereby enabling the BSC device to assist in information exchange between the first device and the second device to achieve random access of the second device. This solves the problems existing in the related art such as a poor direct link channel between the network side and the second device, which results in the inability to achieve random access and the inability of the first device to know the existence of the second device, thereby effectively ensuring communication quality.

[0085] like Figure 3 FIG. 3 is a flow chart of a random access method 300 provided in an exemplary embodiment of the present application. The method 300 may be, but is not limited to, executed by a BSC device, and specifically may be executed by hardware and / or software installed in the BSC device. In this embodiment, the method 300 may include at least the following steps.

[0086] S310: The BSC device sends first information to the first device or the second device.

[0087] The first information is used for random access of the second device.

[0088] It can be understood that, in addition to referring to the relevant description in the aforementioned method embodiment 200, the implementation process of S310 may include, as a possible implementation method, any one of the following (11)-(12) including but not limited to.

[0089] (11) First random access message.

[0090] The first random access message may include at least one of MsgA and MsgB, that is, if the first random access message includes MsgA or MsgB, the first random access message corresponds to a non-contention-based random access process.

[0091] Or, the first random access message includes at least one of Msg1, Msg 2, Msg 3, and Msg 4. That is, if the first random access message includes Msg1, Msg 2, Msg 3, or Msg 4, the first random access message corresponds to a contention-based random access procedure.

[0092] In this embodiment, depending on the congestion of the communication link (also referred to as the main link) between the first device and the second device, the first random message may be only at least part of the message sent by the first device to the second device (such as MsgB, Msg2, or Msg4), or only at least part of the message sent by the second device to the first device (such as MsgA, Msg1, or Msg3), or at least part of the message sent by the first device to the second device and at least part of the message sent by the second device to the first device, etc., without limitation herein.

[0093] In one implementation, if the first information includes the MsgA or Msg 1, then, considering that the SSB generally appears at a fixed time domain position and has a fixed length, and the MsgA or Msg 1 does not appear at a fixed time domain position, the BSC device cannot know in advance whether the second device sends Msg1 or MsgA and its exact position. Therefore, in this embodiment, in order to ensure that the BSC device can determine the position of Msg1 or MsgA and forward it, the BSC device can send it based on the first random access opportunity (Random Access Occasion, RO) position or period related to the first SSB. That is, when the second device sends Msg1 or MsgA, it binds the RO position or period corresponding to Msg1 or MsgA to the SSB, so that the BSC device can clearly know whether the second device sends Msg1 or MsgA and its exact position, so as to achieve reliable forwarding of Msg1 or MsgA.

[0094] Furthermore, when sending Msg1 or MsgA, the BSC device may also perform backscattering with an agreed reflection coefficient, wherein the reflection coefficient may be a fixed value.

[0095] In another implementation, in order to enable the first device to subsequently schedule a dedicated reference signal (RS) configuration for the BSC device, the BSC device may further append the BSC device ID to the forwarded Msg1 or MsgA at an agreed symbol rate and modulation mode when reflecting Msg1 or MsgA. That is, when the first information includes a first random access message, and the first random access message includes Msg1 or MsgA, the first random access message also carries the BSC device identifier.

[0096] Optionally, when the BSC device appends the BSC device ID to the forwarded Msg1 or MsgA at an agreed symbol rate and modulation mode, the agreed symbol rate and modulation mode may be determined by a protocol or by the BSC device based on third signal transmission related information sent by a network-side device. The third signal transmission related information may include, but is not limited to, a modulation rate, a modulation mode, and a mapping relationship between modulation symbols and reflection coefficients.

[0097] Based on this, in one implementation, assuming that the modulation mode is binary phase shift keying (BPSK), the BSC device uses BPSK modulation to send its own ID, which enables the BSC device to only phase rotate the segments of Msg1 or MsgA while keeping their energy unchanged, thereby helping to improve the received signal strength at the first device and ensure signal transmission performance.

[0098] In addition, in the case where the BSC device attaches the BSC device ID to the forwarded Msg1 or MsgA at the agreed symbol rate and modulation method, the reflection coefficient of the BSC device may change within a Msg1 or MsgA forwarding cycle, that is, the reflection coefficient is not fixed.

[0099] In one implementation, considering that the BSC device may not be connected to the first device in real time, the first device may also first indicate to the BSC device the pre-configuration information of the first random access message that can be returned to the second device, so that when the BSC device may not be connected to the first device in real time, the BSC device can reply to the second device with relevant messages of the random access process, such as the contents of Msg2, MsgB, and Msg4, to ensure the smooth execution of the random access process.

[0100] For example, if the BSC device may not be connected to the first device in real time, and the BSC device forwards Msg1 or MsgA sent by the second device to the first device, then, in order to avoid random access failure, the BSC device may send Msg2 or MsgB to the second device according to the pre-configuration information of the first random access message to ensure the smooth execution of the random access process.

[0101] In another implementation, when the BSC device forwards the first random access message, it can forward it according to the forwarding resource information of the BSC device forwarding RO configured by the first device. Optionally, the forwarding resource information may include at least one of the frequency domain position, time domain position, resource quantity, and period of the forwarded RO.

[0102] (12) A first request, where the first request is used by the first device to authenticate the second device during the random access process.

[0103] Among them, considering the congestion of the communication link (also called the main link) between the first device and the second device during the random access process, the second device can first establish a connection with the BSC device based on the random access process, and then establish a connection with the first device based on the BSC device, so as to realize the connection establishment between the second device and the first device.

[0104] That is to say, in this case, the random access between the second device and the first device is implemented in two stages, that is, the BSC device can be understood as a proxy, and the first request can also be understood as a proxy random access request (Proxy Random Access Request), thereby achieving the purpose of the BSC device assisting the second device in random access.

[0105] Based on this, in this embodiment, the random access process between the second device and the BSC device can be a contention-based random access process or a non-contention-based random access process, which will not be described in detail here. At the same time, the first request can be sent by the BSC device during or after the random access between the second device and the BSC device to request the first device to authenticate the second device requesting random access to the first device.

[0106] Optionally, the first request may carry a second device identifier (ID) and other authentication-related content. That is, in this case, the BSC device needs to obtain the second device identifier and other authentication-related content through a random access message before sending the first request, thereby ensuring that the first device can authenticate the second device, and further ensuring that the second device can establish a connection with the first device.

[0107] In one implementation, in order to implement authentication of the second device by the first device, in this embodiment, the first request may include but is not limited to at least one of the following (121)-(122).

[0108] (121) An identifier of the second device, used by the first device to identify the second device for random access.

[0109] Optionally, the identifier of the second device may include but is not limited to an International Mobile Subscriber Identity (IMSI), a Temporary Mobile Subscription Identifier (TMSI), a Globally Unique Temporary Identifier (GUTI), an International Mobile Station Equipment Identity (IMEI), a Subscription Permanent Identifier (SUPI), a Subscription Concealed Identifier (SUCI), a Cell Radio Network Temporary Identifier (C-RNTI), a Temporary Cell RNTI (TC-RNTI), etc.

[0110] (122) Authentication-related information of the second device, the authentication-related information including at least a portion of a second random access message, the second random access message being used for random access between the BSC device and the second device. For example, the second random access message may be all or part of Msg1, Msg2, Msg3, or Msg4, or all or part of MsgA or MsgB, such as an RRC establishment cause, authentication information, an uplink resource request, a small data packet carried in MsgA, etc.

[0111] Of course, for the first device, after receiving the first request sent by the BSC device, the second device requesting random access can be authenticated according to the first request. If the authentication is successful (or passed) or failed (or not passed), then the first device can send a first response to the BSC device according to the authentication result to indicate whether the authentication of the second device is successful or failed.

[0112] In this embodiment, if the first response indicates that the second device is successfully authenticated, then the BSC device may send random access confirmation information to the second device based on the first response. The random access confirmation information is used to indicate that the random access process between the second device and the first device is completed, that is, to inform the second device that the random access is successfully completed.

[0113] Optionally, the first response may include but is not limited to at least one of the following (21)-(23).

[0114] (21) A third random access message, which is determined based on the first request and can be used to cover the relevant information in the first request. For example, if the authentication-related information of the second device included in the first request includes Msg2, MsgB, or Msg4, then the third random access message may include part or all of the content in Msg2, MsgB, or Msg4.

[0115] (22) First indication information, used to indicate that the random access of the second device is successful.

[0116] (23) Second indication information, used to instruct the second device to retain or rewrite at least part of the random access related configuration, such as RRC configuration.

[0117] It is worth noting that the difference between the two different first information (11) and (12) mentioned above is: for the random access scenario in (11) mentioned above, the BSC device acts as a relay to assist in the implementation of the random access process between the second device and the first device, which can solve the problems existing in the related art such as the poor direct link channel between the first device and the second device, resulting in the inability to implement random access and the inability of the first device to know the existence of the second device, thereby effectively ensuring the communication quality.

[0118] As for the random access scenario in (12), the BSC device acts as a proxy to assist in the random access process between the second device and the first device. This can solve the problems existing in the related art such as the poor direct link channel between the network side and the second device, which leads to the inability to implement random access and the inability of the first device to know the existence of the second device, thereby effectively ensuring the communication quality.

[0119] In this embodiment, two different BSC devices are provided to assist in the random access process, enabling random access of the second device. This effectively solves the problems existing in the related art, such as the poor direct link channel between the network side and the second device, which results in the inability to implement random access and the inability of the first device to know the existence of the second device, thereby effectively ensuring communication quality.

[0120] like Figure 4FIG. 4 is a flow chart of a random access method 400 provided in an exemplary embodiment of the present application. The method 400 may be, but is not limited to, executed by a BSC device, and specifically may be executed by hardware and / or software installed in the BSC device. In this embodiment, the method 400 may include at least the following steps.

[0121] S410: The BSC device sends first information to the first device or the second device.

[0122] The first information is used for random access of the second device.

[0123] It can be understood that the implementation process of S410 can refer to the relevant description in the aforementioned method embodiment 200 or 300, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0124] S420: The BSC device sends second information to the second device or the first device.

[0125] The second information is used to configure the target communication network. The BSC device in the target communication network can forward the link information between the first device and the second device, or the BSC device can use the carrier and spectrum of the link information from the first device to the second device to send its own information. In other words, in the target communication network, the BSC device can both forward the link information between the first device and the second device and use the link information between the first device and the second device to send its own information.

[0126] For example, please refer again to Figure 1 The target communication network can be understood as a non-single-base architecture backscatter communication system that meets special conditions. For example, Figure 1 A dual-base backscatter communication system is demonstrated. Due to the presence of the BSC, the carrier signal emitted by the first device can be reflected by the BSC and reach the second device. Simultaneously, the BSC modulates its own signal onto the carrier signal. The second device receives a stronger signal from the first device than without the BSC because the BSC provides an additional multipath. When the primary link signal (i.e., the direct link from the first device to the second) is weak, the presence of the secondary link signal (i.e., the reflected link from the first device to the second device via the BSC) can improve the reception quality of the primary link signal. The BSC also utilizes the carrier and spectrum provided by the primary link signal, thus "free-riding" on the primary link while also helping the primary link, achieving a mutually beneficial and symbiotic effect.

[0127] Based on this, when configuring the target communication network, the second information may include but is not limited to at least one of the following (31)-(35).

[0128] (31) Configuration information of target reference signal.

[0129] The target reference signal includes a first reference signal (such as a sounding reference signal (SRS), a positioning reference signal (PRS), etc.) or a second reference signal (such as a channel state information reference signal (CSI-RS), etc.).

[0130] The first reference signal is used to measure a first link (ie, from the second device to the first device) in the target communication network, where the first link includes a direct link from the second device to the first device and a backscatter link between the BSC device and the first device.

[0131] The second reference signal is used for measuring a second link (ie, from the first device to the second device) in the target communication network, where the second link includes a direct link from the first device to the second device and a backscatter link between the BSC device and the second device.

[0132] Optionally, in this embodiment, the configuration information of the target reference signal may be configuration information dedicated to the target communication network side, or may be configuration information of multiplexed existing reference signals, which is not limited here.

[0133] Based on this, in one implementation, the configuration information of the target reference signal may include but is not limited to at least one of the following (311)-(315).

[0134] (311) The identifier of the BSC device is used to indicate the BSC device and the second device related to the configuration information of the target reference signal, that is, for which BSC devices and which second devices the configuration information of the target reference signal is effective, thereby enabling the BSC device and the second device to identify the correct configuration information of the target reference signal to perform configuration on the target communication network side.

[0135] (312) The first resource related information is used to indicate the second device to send the related resources of the first reference signal, thereby enabling the BSC device and the second device to have a consistent understanding of the related resources of the first reference signal, thereby enabling the accurate sending and receiving of the first reference signal.

[0136] The related resources of the first reference signal include at least one of a frequency domain position, a time domain position and a resource quantity when the second device sends the first reference signal (such as SRS).

[0137] (313) The second resource related information is used to indicate the first device to send the related resources of the second reference signal, thereby enabling the BSC device and the first device to have the same understanding of the related resources of the second reference signal, thereby enabling the accurate sending and receiving of the first reference signal.

[0138] The related resources of the second reference signal include at least one of the frequency domain position, time domain position and resource quantity when the first device sends the second reference signal (such as CSI-RS).

[0139] (314) Signal forwarding information, used to instruct the BSC device to forward the relevant information of the first reference signal or the second reference signal, so that the BSC device and the second device or the BSC device and the first device have the same understanding of the relevant information of signal forwarding, thereby enabling accurate sending and receiving of the signal.

[0140] The relevant information of the BSC device forwarding the first reference signal or the second reference signal may include the forwarding behavior, forwarding resources, etc. of the BSC device forwarding the first reference signal or the second reference signal. For example, the signal forwarding information instructs the BSC device to send a backscattered signal (such as the first reference signal or the second reference signal) of a specified time domain length at a specified time domain position with a specified reflection coefficient.

[0141] (315) Third resource related information is used to indicate the resources related to the second device sending the measurement result corresponding to the second reference signal.

[0142] The related resources of the measurement result include at least one of a frequency domain position, a time domain position, a resource quantity, and a reporting format of the measurement result corresponding to the second reference signal reported by the second device.

[0143] (32) Target reference signal.

[0144] Among them, the target reference signal may be different depending on the link to be configured. For example, if the first link is configured, the target reference signal includes the first reference signal; if the second link is configured, the target reference signal includes the second reference signal; if the first link and the second link are configured at the same time, the target reference signal includes the first reference signal and the second reference signal. There is no limitation here.

[0145] It is worth noting that, corresponding to the aforementioned configuration information of the target reference signal, the target reference signal may be a reference signal dedicated to the configuration of the target communication network, or may be a reference signal in related technologies that is multiplexed, which is not limited here.

[0146] In addition, when forwarding or sending the target reference signal, the BSC device can forward the target reference signal with an agreed backscatter coefficient, thereby enabling the receiving end (which may be the second device or the first device) to separate the backscatter link channel and achieve accurate measurement.

[0147] (33) Reference signal measurement results, the measurement results including at least one of a measurement result between the second device and the first device, a measurement result between the BSC device and the second device, and a measurement result between the BSC device and the first device.

[0148] It can be understood that the reference signal measurement result is sent by the second device to be used for configuring the second link.

[0149] In addition, when sending the reference signal measurement result, the measurement result can be represented by a compressed value such as a quantization value, a codebook index, an angle, an amplitude, etc.; it can also be represented by a relative value such as a residual value or a ratio between the reported CSI and the agreed CSI, etc., and is not limited here.

[0150] (34) First communication parameter configuration information, where the first communication parameter configuration information is parameter configuration information corresponding to a first link in the target communication network and determined by the first device based on the measurement result of the first reference signal. Optionally, the first communication parameter configuration information may include, but is not limited to, at least one of the following (341)-(343).

[0151] (341) Fourth resource related information, the fourth resource related information is used to indicate related information of the backscatter signal sent by the BSC device after the random access process is completed.

[0152] The fourth resource-related information may include but is not limited to at least one of the frequency domain position, time domain position and resource quantity of the backscatter signal sent by the BSC device.

[0153] (342) First signal transmission related information, used to indicate at least one of the symbol rate, signal modulation mode, signal modulation parameters, and demodulation reference signal (DMRS) pattern when the BSC device sends a backscatter signal.

[0154] The signal modulation mode may be a conventional modulation mode, such as BPSK, Quadrature Amplitude Modulation (QAM), etc., or a special constellation pattern, such as cooperative modulation with invariant symbols, etc., which is not limited here.

[0155] (343) Second signal transmission related information, used to indicate at least one of a symbol rate and a DMRS pattern when the second device or the first device transmits a signal. The signal may be a signal to be transmitted before or after the random access procedure is completed, without limitation.

[0156] It is worth noting that, for the first communication parameter configuration information, if the configuration information does not include relevant configuration information of the second device or the first device, the BSC device may not forward it, thereby saving signaling overhead.

[0157] (35) Second communication parameter configuration information, where the second communication parameter configuration information is determined based on the measurement result of the second reference signal and is parameter configuration information corresponding to the second link in the target communication network.

[0158] Optionally, similar to the aforementioned first communication parameter configuration information, the second communication parameter configuration information may also include but is not limited to at least one of the following (351)-(353).

[0159] (351) Fourth resource related information, the fourth resource related information is used to indicate related information of the backscatter signal sent by the BSC device after the random access process is completed.

[0160] (352) First signal transmission related information is used to indicate at least one of the symbol rate, signal modulation mode, signal modulation parameters, and demodulation reference signal (DMRS) pattern when the BSC device sends a backscatter signal.

[0161] (353) Second signal transmission related information, used to indicate at least one of the symbol rate and DMRS pattern when the second device or the first device sends a signal.

[0162] Among them, the relevant descriptions of (351)-(353) can refer to the relevant descriptions in the aforementioned (341)-(343), but it should be noted that the only difference between the two is that the first communication parameter configuration information is used for the configuration of the first link, and the second communication parameter configuration information is used for the configuration of the second link.

[0163] For the aforementioned second information, if only the unidirectional communication network configuration is considered, then there is no need to configure the first reference signal and its related measurement reporting and communication parameters, and there is also no need to configure the second reference signal and related communication parameters. This embodiment does not impose any restrictions here.

[0164] In addition, in this embodiment, there may be multiple implementation orders of S410 and S420. For example, S420 may be located after S410. That is, the configuration of the target communication network is performed after the random access of the second device is completed.

[0165] For another example, the S420 may also be located in the implementation process of the S410, that is, during the random access process of the second device, the target communication network side configuration is performed at the same time, such as dividing several messages of the random access process more flexibly, placing some Msgs before the relevant signaling configured with the target communication network (such as the part in the second information), and placing some Msgs after it, such as placing the dedicated SRS / CSI-RS configuration before Msg3 and after Msg2, etc.

[0166] In one implementation, for a scenario where the second information may be sent before the random access procedure between the second device and the first device is completed, considering that the BSC device can forward the relevant signal to the second device or the first device, the transmission resources and timing of Msg2, Msg3, and Msg4 are uncertain. Therefore, before sending each message, the first device or the second device needs to inform the BSC device how to forward the message and what resources to use to forward the message. In other words, if the BSC device sends the second information before the random access procedure between the second device and the first device is completed, and the first information includes the first random access message, the BSC device receives third information sent by the second device or the first device. The third information is used to instruct the BSC device on relevant information for forwarding the first information, such as at least one of the forwarding method and forwarding resources of the first information. This can reduce the time it takes to complete the random access procedure itself.

[0167] Optionally, the third information may be carried by the first random access message itself, or may be indicated by additional signaling, which is not limited here.

[0168] In this embodiment, the BSC device serves as a bridge between the second device and the first device, assisting the second device in completing the random access process and establishing a connection with the first device, and configuring parameters related to the target communication network to the relevant devices during the connection establishment process or after the connection is successfully established, thereby realizing symbiotic communication between the BSC device, the second device and the first device, and effectively solving problems such as network connection failure when the signal between the second device and the first device is weak.

[0169] like Figure 5 FIG. 5 is a flow chart of a random access method 500 provided in an exemplary embodiment of the present application. The method 500 may be, but is not limited to, executed by a BSC device, and specifically may be executed by hardware and / or software installed in the BSC device. In this embodiment, the method 500 may include at least the following steps.

[0170] S510: The BSC device sends first information to the second device.

[0171] The first information is used for random access of the second device.

[0172] It can be understood that, in addition to referring to the relevant descriptions in the aforementioned method embodiments 200, 300 or 400, as a possible implementation method, if the first information also includes the first SSB, then, Figure 5 As shown, depending on the different methods for obtaining the first SSB, the implementation method of the BSC device sending the first SSB to the second device may include at least one of the following S511-S512.

[0173] S511: The BSC device receives the second SSB sent by the first device, and sends the first SSB to the second device according to the second SSB.

[0174] When the BSC device sends the first SSB to the second device according to the second SSB, it can determine the first SSB according to the second SSB, or determine the sending period of the first SSB according to the sending period of the second SSB.

[0175] For example, when determining the first SSB based on the second SSB, the first SSB may be the same as the second SSB, or the first SSB is at least part of the second SSB, that is, the first SSB is generated by the first device and sent to the BSC device for forwarding.

[0176] For another example, if the transmission period of the first SSB is determined based on the transmission period of the second SSB, then the transmission period of the first SSB may be N (N is an integer greater than or equal to 1) times the transmission period of the second SSB, thereby reducing the BSC device's own overhead. The second SSB is an SSB sent by the first device. That is, when the BSC device forwards the first SSB, the transmission period of the first SSB may be an integer multiple of the transmission period of the second SSB sent by the first device, such as 1 times, 2 times, etc.

[0177] Or, the second SSB is an SSB sent by the first device using a specific beam, wherein the SSB using a specific beam can be implemented by protocol agreement, etc., that is, when the BSC device forwards the first SSB, the sending period of the first SSB can be an integer multiple of the sending period of the SSB sent by the first device using a specific beam (or specific beam forming), such as 1 times, 2 times, etc.

[0178] It is worth noting that the first SSB mentioned in this embodiment may be a single SSB or an SSB Burst including multiple SSBs. If the second SSB is an SSB Burst, the BSC device may forward all of the SSB Burst or only forward one SSB in the SSB Burst.

[0179] In one implementation, when the BSC device sends the first SSB to the second device according to the second SSB, it may also send the first SSB to the second device according to fourth information. The fourth information may include but is not limited to at least one of the following (41)-(42).

[0180] (41) Fifth resource-related information, used to instruct the BSC device to send related resources of the first SSB.

[0181] Among them, the fifth resource-related information may include but is not limited to at least one of the frequency domain position, time domain position, resource quantity, and period of the BSC device sending the first SSB.

[0182] In one implementation, if the fifth resource-related information includes a period, and the transmission period of the first SSB can be N (N is an integer greater than or equal to 1) times the transmission period of the second SSB, then the period included in the fifth resource-related information can be the size of the N value, or it can directly indicate the transmission period of the first SSB, and there is no restriction here.

[0183] In addition, since the first SSB is sent periodically, the BSC device can send the first SSB with an agreed reflection coefficient, and the reflection coefficient remains unchanged within one SSB sending cycle.

[0184] (42) Reflection coefficient, used by the BSC device to send the first SSB.

[0185] S512: The BSC device generates the first SSB and sends the first SSB to the second device.

[0186] That is, the BSC device can be understood as a BSC device with strong capabilities, such as being able to actively generate carriers (such as SSB). Such a device can either generate carriers on its own or fall back to backscatter communication (the latter of which can be used for communication in the target communication network). For a BSC device with the ability to actively generate carriers, the SSB can be generated and sent by the BSC device itself, that is, the first SSB is autonomously generated by the BSC device.

[0187] In this embodiment, in order to ensure that the first SSB generated by the BSC device meets the communication requirements, the BSC device may generate the first SSB based on the fifth information. The fifth information may include but is not limited to at least one of the following (51)-(53).

[0188] (51) Sequence type of SSB.

[0189] (52)SSB sequence length.

[0190] (53) Cell ID

[0191] It is worth noting that the fifth information can be implemented by protocol agreement, network side configuration, etc., and is not limited here.

[0192] In addition, in one implementation, similar to the aforementioned S511, for sending the first SSB to the second device as described in S512, the BSC device may also send the first SSB to the second device based on the fourth information (such as fifth resource-related information, reflection coefficient), wherein the relevant description of the fourth information can refer to the aforementioned (41)-(42), and will not be repeated here to avoid repetition.

[0193] In this embodiment, during the random access process, sending the SSB through the BSC device can assist the second device in completing the random access process and establishing a connection with the network side.

[0194] Based on the above description of the random access process, the technical solution provided by this application is further described below with reference to examples, as follows: It is assumed that the first device is a network-side device and the second device is a terminal.

[0195] Example 1

[0196] Assuming that the BSC device completes the initial access and target communication network configuration as a relay, please combine Figure 6a , the implementation process is as follows.

[0197] S611, the network side device sends the first SSB.

[0198] S612: The BSC device receives and forwards the first SSB sent by the network side device.

[0199] S613: The terminal sends Msg1 (or MSgA).

[0200] S614: When the BSC device receives Msg1 (or MSgA), it attaches its own identifier to the Msg1 (or MSgA) and sends it.

[0201] S615: The network side device sends configuration information of the target reference signal.

[0202] S616: The BSC device receives the configuration information of the target reference signal and forwards it to the terminal.

[0203] S617, the terminal sends an SRS;

[0204] S618: The BSC device forwards the SRS to the network side device.

[0205] S619, the network side device sends a CSI-RS;

[0206] S620: The BSC device forwards the CSI-RS to the terminal.

[0207] S621: The BSC device determines and sends first communication parameter configuration information according to the SRS measurement result.

[0208] S622: When the BSC device receives the first communication parameter configuration information, it forwards it to the terminal.

[0209] S623: The network side device sends Msg2 (or MSgB) according to sending Msg1 (or MSgA).

[0210] S624: When the BSC device receives Msg2 (or MSgB), it forwards it to the terminal.

[0211] S625: The terminal sends MSg3 according to Msg2.

[0212] S626: When receiving Msg3, the BSC device forwards it to the network side device.

[0213] S627: The network side device sends Msg4 according to sending Msg3.

[0214] S628: When the BSC device receives Msg4, it forwards it to the terminal.

[0215] S629: The terminal measures the received CSI-RS and sends the CSI-RS measurement result.

[0216] S630: The BSC device receives the CSI-RS measurement result and forwards it to the network side device.

[0217] S631: The network-side device configures and sends second communication parameter configuration information according to the received CSI-RS measurement result.

[0218] S632: The BSC device receives and forwards the second communication parameter configuration information.

[0219] The aforementioned process may include but is not limited to the aforementioned steps, depending on actual communication requirements. For example, it may include more or fewer steps than the aforementioned steps, or the order of the steps may be swapped.

[0220] Based on this, several possible implementation methods are described below based on the above steps.

[0221] (a) The first SSB in S611-S612 may be sent by a network-side device or generated by the BSC device itself, and there is no limitation here.

[0222] (b) The configuration of the target communication network in the above process can be as follows: Figure 6a As shown, the relevant parameters of the first link and the second link can also be configured as shown. Figure 6b Only the relevant parameters of the first link are configured as shown. You can also configure Figure 6c Only the relevant parameters of the second link are configured as shown, and no limitation is imposed here.

[0223] (c) For the configuration of the target communication network in the above process, it can be Figure 6a As shown in the random access process, it can also be performed as Figure 6d It is shown that it is performed after the random access process is completed, and there is no limitation here.

[0224] Example 2

[0225] The BSC device acts as an agent, that is, the BSC device tells the network side device that there is a terminal, and completes the initial access and related configuration of the target communication network in a sidelink manner. Figure 6e , the implementation process is as follows.

[0226] S651, the network side device sends the first SSB.

[0227] S652: The BSC device receives and forwards the first SSB sent by the network side device.

[0228] S653: The terminal sends Msg1 (or MsgA).

[0229] S654: The BSC device sends Msg2 (or MsgB) to the terminal according to the received Msg1 (or MsgA).

[0230] S655: The terminal sends Msg3 according to Msg2.

[0231] S656: The BSC device sends Msg4 to the terminal according to the received Msg3.

[0232] S657: After completing the initial connection with the terminal, the BSC device sends a first request (also called a proxy random access request) to the network side device.

[0233] S658: The network-side device sends a first response according to the first request.

[0234] S659: When receiving the first response, the BSC device sends random access confirmation information to the terminal according to the first response to indicate that the random access process between the terminal and the network side device is completed.

[0235] S660: The network-side device sends configuration information of the target reference signal.

[0236] S661: The BSC device receives configuration information of the target reference signal and forwards it to the terminal.

[0237] S662: The terminal sends an SRS.

[0238] S663: The BSC device forwards the SRS to the network side device.

[0239] S664, the network side device sends a CSI-RS;

[0240] S665: The BSC device forwards the CSI-RS to the terminal.

[0241] S666: The network-side device determines and sends first communication parameter configuration information based on the SRS measurement result.

[0242] S667: When the BSC device receives the first communication parameter configuration information, it forwards it to the terminal.

[0243] S668: The terminal measures the received CSI-RS and sends the CSI-RS measurement result.

[0244] S669: The BSC device receives the CSI-RS measurement result and forwards it to the network side device.

[0245] S670: The network-side device configures and sends second communication parameter configuration information according to the received CSI-RS measurement result.

[0246] S671: The BSC device receives and forwards the second communication parameter configuration information.

[0247] The aforementioned process may include but is not limited to the aforementioned steps, depending on actual communication requirements. For example, it may include more or fewer steps than the aforementioned steps, or the order of the steps may be swapped.

[0248] Based on this, several possible implementations are described below.

[0249] (a) The first SSB in S651-S652 may be sent by a network-side device or generated by the BSC device itself, and there is no restriction here.

[0250] (b) The configuration of the target communication network in the above process can be as follows: Figure 6e As shown, the relevant parameters of the first link and the second link can also be configured as shown. Figure 6f Only the relevant parameters of the first link are configured as shown. You can also configure Figure 6g Only the relevant parameters of the second link are configured as shown, and no limitation is imposed here.

[0251] (c) For the configuration of the target communication network in the above process, it can be Figure 6e As shown in the figure, it is performed after the random access process is completed, or it can be performed as shown in the figure. Figure 6h It is shown as being performed during the random access process and is not limited here.

[0252] For example, if the target communication network is configured as Figure 6hAs shown, this is performed during the random access process. For example, after receiving Msg2, the BSC device sends a first request to the BS. After completing the SRS / CSI-RS configuration and related configuration of the target communication network, it sends Msg3 and Msg4. This allows for authentication and authorization with the network-side device as quickly as possible, terminating the remaining processes early and reducing the delay in the BSC device waiting to send information. However, the time the terminal waits to send Msg3 and receive Msg4 will be extended, and accordingly, a longer timer (such as the timer after sending Msg2) needs to be configured to avoid accidental termination of the random access process.

[0253] (d) For the random access in the above process, the BSC device can Figure 6e As shown in FIG, as an agent, after completely random access between the terminal, the first request is sent, or as shown in FIG. Figure 6h As shown in FIG, as an agent, after obtaining authentication related information based on the random access message (such as Msg1 (or MsgA), Msg2 (or MSgB)) between the terminal, the first request is sent, and for the subsequent MSg3 and MSg4, the BSC device can be as follows Figure 6h The data is forwarded as a relay to achieve random access of the terminal, thereby improving the efficiency of random access.

[0254] In the random access solution provided in the present application, the BSC device either acts as a transparent / semi-transparent relay to transmit the random access-related data packets exchanged between the first device and the second device to the other party, thereby completing the initial access and symbiotic communication-related configuration; or first establishes a connection with the UE, and then assists the UE in completing the initial access and symbiotic communication-related configuration in a sidelink manner. This assists the UE in completing the random access process and establishing a connection with the network side, solving the problems existing in the related technology such as the poor direct link channel between the first device and the second device, which makes random access impossible and the network side device unable to know the existence of the terminal, thereby effectively ensuring the communication quality.

[0255] In addition, the solution provided in this application can be applied to backscatter communication systems, such as RFID, LTE, NB-IoT, NR, IEEE 802.11 evolution systems, etc., without limitation here.

[0256] like Figure 7 FIG. 7 is a flow chart of a random access method 700 provided in an exemplary embodiment of the present application. The method 700 may be, but is not limited to, executed by a first device, and specifically may be executed by hardware and / or software installed in the first device. In this embodiment, the method 700 may include at least the following steps.

[0257] S710: A first device receives first information sent by a backscatter communication BSC device.

[0258] The first information is used for random access of the second device.

[0259] Optionally, the first information includes any one of the following: a first random access message, the first random access message includes MsgA, or the first random access message includes at least one of Msg1 and Msg 3; a first request, the first request is used by the first device to authenticate the second device during the random access process.

[0260] Optionally, when the first random access message includes Msg1 or MsgA, the first random access message further carries an identification ID of the BSC device.

[0261] Optionally, the first request includes at least one of the following: an identifier of the second device; authentication-related information of the second device, the authentication-related information including at least part of a second random access message, and the second random access message is used for random access between the BSC device and the second device.

[0262] Optionally, when the first information includes the first request, the method further includes: the first device sending a first response according to the first request, where the first response is used to indicate whether the authentication of the second device is successful or failed.

[0263] Optionally, the first response includes at least one of the following: a third random access message, the third random access message being determined based on the first request; first indication information, used to indicate that the random access of the second device is successful; and second indication information, used to instruct the second device to retain or rewrite at least part of the random access-related configuration.

[0264] Optionally, the method also includes: receiving second information sent by the BSC device; wherein the second information includes at least one of the following: a target reference signal, the target reference signal includes a first reference signal, the first reference signal is used to measure a first link in the target communication network, the first link includes a direct link from the second device to the first device and a backscatter link between the BSC device and the first device; a reference signal measurement result, the measurement result includes at least one of the measurement result between the second device and the first device, the measurement result between the BSC device and the second device, and the measurement result between the BSC device and the first device.

[0265] Optionally, the method also includes: when the timing of sending the second information is before the random access process between the second device and the first device is completed, and the first information includes the first random access message, the first device sends third information to the BSC device, and the third information is used to indicate the relevant information of the BSC device to forward the first information.

[0266] Optionally, the third information includes at least one of a forwarding method or a forwarding resource of the first information.

[0267] Optionally, the method further includes: the first device sending the first SSB or fifth information to the BSC device, and the fifth information is used by the BSC device to generate the first SSB.

[0268] Optionally, the fifth information includes at least one of the following: SSB sequence type; SSB sequence length; cell ID.

[0269] Optionally, the method further includes: the first device sending fourth information, where the fourth information is used to instruct the BSC device to send relevant information of the first SSB.

[0270] Optionally, the fourth information includes at least one of the following: fifth resource-related information, used to indicate the relevant resources for the BSC device to send the first SSB; and a reflection coefficient, used by the BSC device to send the first SSB.

[0271] Optionally, the method also includes: the first device sends a sixth message to the BSC device; wherein the sixth message includes at least one of the following: forwarding resource information of the BSC device forwarding the random access opportunity RO; third signal transmission related information, used to instruct the BSC device to carry the BSC device identifier to the relevant information in the first random access message; pre-configuration information of the first random access message, used for the BSC device to reply to the second device with relevant messages of the random access process.

[0272] It can be understood that the various implementation methods provided in method embodiment 700 have the same or corresponding technical features as the aforementioned method embodiments 200-500. Therefore, the implementation process of each implementation method of method embodiment 700 can refer to the relevant descriptions in the aforementioned method embodiments 200-500 and achieve the same or corresponding technical effects, which is not limited here.

[0273] like Figure 8FIG. 8 is a flow chart of a random access method 800 provided in an exemplary embodiment of the present application. The method 800 may be, but is not limited to, executed by a second device, specifically by hardware and / or software installed in the second device. In this embodiment, the method 800 may include at least the following steps.

[0274] S810. The second device receives first information sent by the BSC device.

[0275] The first information is used for random access of the second device.

[0276] Optionally, the first information includes any one of the following: a first random access message, the first random access message includes MsgB, or the first random access message includes at least one of Msg 2 and Msg4; a first synchronization signal block SSB.

[0277] Optionally, the method further includes: receiving random access confirmation information sent by the BSC device, where the random access confirmation information is used to indicate that the random access process between the second device and the first device is completed.

[0278] Optionally, the method further includes: receiving second information sent by the BSC device; wherein the second information includes at least one of the following: configuration information of a target reference signal, the target reference signal includes a first reference signal or a second reference signal, the first reference signal is used for measuring a first link in the target communication network, the second reference signal is used for measuring a second link in the target communication network, the first link includes a direct link from the second device to the first device and a backscatter link between the BSC device and the first device, the second link includes a direct link from the first device to the second device and a backscatter link between the BSC device and the second device; target reference signal, the target reference signal includes the second reference signal; reference signal measurement result, the The measurement results include at least one of the measurement results between the second device and the first device, the measurement results between the BSC device and the second device, and the measurement results between the BSC device and the first device; first communication parameter configuration information, the first communication parameter configuration information is determined based on the measurement result of the first reference signal; second communication parameter configuration information, the second communication parameter configuration information is determined based on the measurement result of the second reference signal; wherein, the first communication parameter configuration information and the second communication parameter are parameter configuration information corresponding to the target communication network, and the BSC device in the target communication network can forward the link information between the first device and the second device, or, the BSC device can use the carrier and spectrum of the link information from the first device to the second device to send its own information.

[0279] Optionally, the configuration information of the target reference signal includes at least one of the following: an identifier of the BSC device, used to indicate the BSC device and the second device related to the configuration information of the target reference signal; first resource-related information, used to indicate the relevant resources for the second device to send the first reference signal; second resource-related information, used to indicate the relevant resources for the first device to send the second reference signal; signal forwarding information, used to indicate the BSC device to forward relevant information of the first reference signal or the second reference signal; third resource-related information, used to indicate the relevant resources for the second device to send the measurement result corresponding to the second reference signal.

[0280] Optionally, the first communication parameter configuration information or the second communication parameter configuration information includes at least one of the following: fourth resource-related information, the fourth resource-related information is used to indicate relevant information of the backscatter signal sent by the BSC device after the random access process is completed; first signal transmission-related information is used to indicate at least one of the symbol rate, signal modulation mode, signal modulation parameters, and demodulation reference signal DMRS pattern when the BSC device sends the backscatter signal; second signal transmission-related information is used to indicate at least one of the symbol rate and DMRS pattern when the second device or the first device sends the signal.

[0281] Optionally, when the first information includes a first SSB, the transmission period of the first SSB is N times the transmission period of the second SSB; wherein, the second SSB is sent by the first device to the SSB of the BSC device, or the second SSB is sent by the first device to the SSB of the BSC device using a specific beam, and N is an integer greater than or equal to 1.

[0282] It can be understood that the various implementation methods provided in method embodiment 800 have the same or corresponding technical features as the aforementioned method embodiments 200-500. Therefore, the implementation process of each implementation method of method embodiment 800 can refer to the relevant descriptions in the aforementioned method embodiments 200-500 and achieve the same or corresponding technical effects, which is not limited here.

[0283] The random access method provided in the embodiment of the present application may be performed by a random access device. In the embodiment of the present application, a method for performing random access by a random access device is taken as an example to illustrate the random access device provided in the embodiment of the present application.

[0284] like Figure 9As shown, it is a structural diagram of a random access device 900 provided in an embodiment of the present application. The device 900 includes a transmission module 910 for sending first information to a second device or a first device; wherein the first information is used for random access of the second device; and an acquisition module 920 for acquiring the first information.

[0285] Optionally, the first information includes any one of the following: a first random access message, the first random access message includes at least one of MsgA and MsgB, or the first random access message includes at least one of Msg1, Msg 2, Msg 3, and Msg4; a first request, the first request is used by the first device to authenticate the second device during the random access process; a first synchronization signal block SSB.

[0286] Optionally, when the first information includes the MsgA or Msg 1, the MsgA or Msg 1 is sent based on a first random access opportunity RO position or period, wherein the first RO position or period is related to the first SSB.

[0287] Optionally, the first random access message also carries an identification ID of the BSC device.

[0288] Optionally, the first request includes at least one of the following: an identifier of the second device; authentication-related information of the second device, the authentication-related information including at least part of a second random access message, and the second random access message is used for random access between the BSC device and the second device.

[0289] Optionally, when the first information includes the first request, the transmission module 910 is further used to receive a first response sent by the first device, the first response being used to indicate whether the authentication of the second device is successful or failed; and when the first response indicates that the authentication of the second device is successful, random access confirmation information is sent to the second device according to the first response, the random access confirmation information being used to indicate that the random access process between the second device and the first device is completed.

[0290] Optionally, the first response includes at least one of the following: a third random access message, the third random access message being determined based on the first request; first indication information, used to indicate that the random access of the second device is successful; and second indication information, used to instruct the second device to retain or rewrite at least part of the random access-related configuration.

[0291] Optionally, the transmission module 910 is further used to: send second information to the second device or the first device; wherein the second information includes at least one of the following: configuration information of a target reference signal, the target reference signal includes a first reference signal or a second reference signal, the first reference signal is used for measuring a first link in the target communication network, the second reference signal is used for measuring a second link in the target communication network, the first link includes a direct link from the second device to the first device and a backscatter link between the BSC device and the first device, the second link includes a direct link from the first device to the second device and a backscatter link between the BSC device and the second device; target reference signal; reference signal measurement result, the measurement result includes at least one of the measurement results between the second device and the first device, the measurement results between the BSC device and the second device, and the measurement results between the BSC device and the first device; first communication parameter configuration information, where the first communication parameter configuration information is determined based on the measurement result of the first reference signal; and second communication parameter configuration information, where the second communication parameter configuration information is determined based on the measurement result of the second reference signal; wherein the first communication parameter configuration information and the second communication parameter are parameter configuration information corresponding to the target communication network, and the BSC device in the target communication network can forward the link information between the first device and the second device, or the BSC device can use the carrier and spectrum of the link information from the first device to the second device to send its own information.

[0292] Optionally, the configuration information of the target reference signal includes at least one of the following: an identifier of the BSC device, used to indicate the BSC device and the second device related to the configuration information of the target reference signal; first resource-related information, used to indicate the relevant resources for the second device to send the first reference signal; second resource-related information, used to indicate the relevant resources for the first device to send the second reference signal; signal forwarding information, used to indicate the BSC device to forward relevant information of the first reference signal or the second reference signal; third resource-related information, used to indicate the relevant resources for the second device to send the measurement result corresponding to the second reference signal.

[0293] Optionally, the first communication parameter configuration information or the second communication parameter configuration information includes at least one of the following: fourth resource-related information, the fourth resource-related information is used to indicate relevant information of the backscatter signal sent by the BSC device after the random access process is completed; first signal transmission-related information is used to indicate at least one of the symbol rate, signal modulation mode, signal modulation parameters, and demodulation reference signal DMRS pattern when the BSC device sends the backscatter signal; second signal transmission-related information is used to indicate at least one of the symbol rate and DMRS pattern when the second device or the first device sends the signal.

[0294] Optionally, the transmission module 910 is also used to: when the sending timing of the second information is after the random access process between the second device and the first device is completed, and the first information includes the first random access message, the BSC device receives third information, and the third information is used to indicate the relevant information of the BSC device to forward the first information.

[0295] Optionally, the third information includes at least one of a forwarding method or a forwarding resource of the first information.

[0296] Optionally, when the first information includes a first SSB, the transmission module 910 sends the first SSB to the second device, including at least one of the following: receiving the second SSB sent by the first device, forwarding the first SSB to the second device based on the second SSB; generating the first SSB through a processing module, and sending the first SSB to the second device.

[0297] Optionally, the transmission module 910 sends the first SSB to the second device, including: sending the first SSB to the second device according to fourth information; wherein the fourth information includes at least one of the following: fifth resource-related information, used to indicate the relevant resources for the BSC device to send the first SSB; reflection coefficient, used for the BSC device to send the first SSB.

[0298] Optionally, the processing module generates the first SSB, including: the BSC device generates the first SSB according to fifth information; wherein the fifth information includes at least one of the following: the sequence type of SSB; the sequence length of SSB; the cell ID.

[0299] Optionally, the transmission period of the first SSB is N times the transmission period of the second SSB; wherein, the second SSB is an SSB sent by the first device, or the second SSB is an SSB sent by the first device using a specific beam, and N is an integer greater than or equal to 1.

[0300] Optionally, the transmission module 910 is also used to: receive sixth information sent by the first device; wherein the sixth information includes at least one of the following: forwarding resource information of the BSC device forwarding the random access opportunity RO; third signal transmission related information, used to instruct the BSC device to carry the BSC device identifier to the relevant information in the first random access message; pre-configuration information of the first random access message, used for the BSC device to reply to the second device with relevant messages of the random access process.

[0301] The random access device 900 in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a BSC device or other device other than a BSC device. For example, the BSC device can include, but is not limited to, the types of BSC devices 13 listed above, and is not specifically limited in the embodiment of the present application.

[0302] The random access device 900 provided in the embodiment of the present application can achieve Figures 2 to 5 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0303] like Figure 10 , which is a structural diagram of a random access device 1000 provided in one embodiment of the present application, wherein a transmission module 1010 of the device 1000 is configured to receive first information sent by a backscatter communication BSC device; wherein the first information is used for random access of a second device.

[0304] Optionally, the first information includes any one of the following: a first random access message, the first random access message includes MsgA, or the first random access message includes at least one of Msg1 and Msg 3; a first request, the first request is used by the first device to authenticate the second device during the random access process.

[0305] Optionally, when the first random access message includes Msg1 or MsgA, the first random access message further carries an identification ID of the BSC device.

[0306] Optionally, the first request includes at least one of the following: an identifier of the second device; authentication-related information of the second device, the authentication-related information including at least part of a second random access message, and the second random access message is used for random access between the BSC device and the second device.

[0307] Optionally, in the case where the first information includes the first request, the transmission module 1010 is further used to: send a first response according to the first request, where the first response is used to indicate whether the authentication of the second device is successful or failed.

[0308] Optionally, the first response includes at least one of the following: a third random access message, the third random access message being determined based on the first request; first indication information, used to indicate that the random access of the second device is successful; and second indication information, used to instruct the second device to retain or rewrite at least part of the random access-related configuration.

[0309] Optionally, the transmission module 1010 is also used to: receive second information sent by the BSC device; wherein the second information includes at least one of the following: a target reference signal, the target reference signal includes a first reference signal, the first reference signal is used to measure a first link in the target communication network, the first link includes a direct link from the second device to the first device and a backscatter link between the BSC device and the first device; a reference signal measurement result, the measurement result includes at least one of the measurement result between the second device and the first device, the measurement result between the BSC device and the second device, and the measurement result between the BSC device and the first device.

[0310] Optionally, the transmission module 1010 is also used to send third information to the BSC device when the timing of sending the second information is before the random access process between the second device and the first device is completed, and the first information includes the first random access message, and the third information is used to indicate the relevant information of the BSC device to forward the first information.

[0311] Optionally, the third information includes at least one of a forwarding method or a forwarding resource of the first information.

[0312] Optionally, the transmission module 1010 is further used to send the first SSB or fifth information to the BSC device, and the fifth information is used by the BSC device to generate the first SSB.

[0313] Optionally, the fifth information includes at least one of the following: SSB sequence type; SSB sequence length; cell ID.

[0314] Optionally, the transmission module 1010 is further used to send fourth information, and the fourth information is used to instruct the BSC device to send relevant information of the first SSB.

[0315] Optionally, the fourth information includes at least one of the following: fifth resource-related information, used to indicate the relevant resources for the BSC device to send the first SSB; and a reflection coefficient, used by the BSC device to send the first SSB.

[0316] Optionally, the transmission module 1010 is also used to send a sixth message to the BSC device; wherein the sixth message includes at least one of the following: forwarding resource information of the BSC device forwarding the random access opportunity RO; third signal transmission related information, used to instruct the BSC device to carry the BSC device identifier to the relevant information in the first random access message; pre-configuration information of the first random access message, used for the BSC device to reply to the second device with relevant messages of the random access process.

[0317] The random access device 1000 in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a first device (such as a terminal, a network-side device, or a dedicated reader / writer). For example, the first device can include, but is not limited to, the types of first devices listed above, and the embodiments of the present application do not specifically limit this.

[0318] The random access device 1000 provided in the embodiment of the present application can achieve Figure 7 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0319] like Figure 11 , which is a structural diagram of a random access device 1100 provided in an embodiment of the present application, the device 1100 includes a transmission module 1110, which is used to receive first information sent by a BSC device; wherein the first information is used for random access of the second device.

[0320] Optionally, the first information includes any one of the following items: a first random access message, the first random access message includes MsgB, or the first random access message includes at least one of Msg 2 and Msg4; a first synchronization signal block SSB, the first SSB is used for signal synchronization in the random access process.

[0321] Optionally, the transmission module 1110 is further used to: receive random access confirmation information sent by the BSC device, where the random access confirmation information is used to indicate that the random access process between the second device and the first device is completed.

[0322] Optionally, the transmission module 1110 is further configured to receive second information sent by the BSC device; wherein the second information includes at least one of the following: configuration information of a target reference signal, the target reference signal including a first reference signal or a second reference signal, the first reference signal being used for measuring a first link in the target communication network, the second reference signal being used for measuring a second link in the target communication network, the first link including a direct link from the second device to the first device and a backscatter link between the BSC device and the first device, the second link including a direct link from the first device to the second device and a backscatter link between the BSC device and the second device; target reference signal, the target reference signal including the second reference signal; reference signal measurement result , the measurement result includes at least one of the measurement result between the second device and the first device, the measurement result between the BSC device and the second device, and the measurement result between the BSC device and the first device; first communication parameter configuration information, the first communication parameter configuration information is determined according to the measurement result of the first reference signal; second communication parameter configuration information, the second communication parameter configuration information is determined according to the measurement result of the second reference signal; wherein, the first communication parameter configuration information and the second communication parameter are parameter configuration information corresponding to the target communication network, and the BSC device in the target communication network can forward the link information between the first device and the second device, or, the BSC device can use the carrier and spectrum of the link information from the first device to the second device to send its own information.

[0323] Optionally, the configuration information of the target reference signal includes at least one of the following: an identifier of the BSC device, used to indicate the BSC device and the second device related to the configuration information of the target reference signal; first resource-related information, used to indicate the relevant resources for the second device to send the first reference signal; second resource-related information, used to indicate the relevant resources for the first device to send the second reference signal; signal forwarding information, used to indicate the BSC device to forward relevant information of the first reference signal or the second reference signal; third resource-related information, used to indicate the relevant resources for the second device to send the measurement result corresponding to the second reference signal.

[0324] Optionally, the first communication parameter configuration information or the second communication parameter configuration information includes at least one of the following: fourth resource-related information, the fourth resource-related information is used to indicate relevant information of the backscatter signal sent by the BSC device after the random access process is completed; first signal transmission-related information is used to indicate at least one of the symbol rate, signal modulation mode, signal modulation parameters, and demodulation reference signal DMRS pattern when the BSC device sends the backscatter signal; second signal transmission-related information is used to indicate at least one of the symbol rate and DMRS pattern when the second device or the first device sends the signal.

[0325] Optionally, when the first information includes a first SSB, the transmission period of the first SSB is N times the transmission period of the second SSB; wherein, the second SSB is sent by the first device to the SSB of the BSC device, or the second SSB is sent by the first device to the SSB of the BSC device using a specific beam, and N is an integer greater than or equal to 1.

[0326] The random access device 1100 in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a second device. For example, the second device can include, but is not limited to, the types of second devices listed above (such as a terminal, a network-side device, or a dedicated reader / writer), and is not specifically limited in the embodiments of the present application.

[0327] The random access device 1100 provided in the embodiment of the present application can achieve Figure 8 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0328] like Figure 12 As shown, an embodiment of the present application further provides a communication device 1200 (such as a BSC device, a first device, or a second device), including a processor 1201 and a memory 1202, wherein the memory 1202 stores a program or instruction that can be run on the processor 1201. For example, when the communication device 1200 is a BSC device, the program or instruction is executed by the processor 1201 to implement the various steps in the above-mentioned random access method embodiments 200-500, and can achieve the same technical effect. When the communication device 1200 is a first device, the program or instruction is executed by the processor 1201 to implement the various steps of the above-mentioned random access method embodiment 700, and can achieve the same technical effect. When the communication device 1200 is a second device, the program or instruction is executed by the processor 1201 to implement the various steps of the above-mentioned random access method embodiment 800, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0329] The embodiment of the present application further provides a terminal, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the following Figure 7 or Figure 8 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned first device or second device side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 13 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0330] The terminal 1300 includes but is not limited to: a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309 and at least some of the components of the processor 1310.

[0331] Those skilled in the art will understand that the terminal 1300 may also include a power supply (such as a battery) to power each component, and the power supply may be logically connected to the processor 1310 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 13 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.

[0332] It should be understood that in an embodiment of the present application, the input unit 1304 may include a graphics processing unit (GPU) 13041 and a microphone 13042, and the graphics processor 13041 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 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1307 includes a touch panel 13071 and at least one of other input devices 13072. The touch panel 13071 is also called a touch screen. The touch panel 13071 may include two parts: a touch detection device and a touch controller. Other input devices 13072 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.

[0333] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1301 may transmit the data to the processor 1310 for processing. Furthermore, the RF unit 1301 may send uplink data to the network-side device. Typically, the RF unit 1301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0334] The memory 1309 can be used to store software programs or instructions and various data. The memory 1309 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1309 may include a volatile memory or a non-volatile memory. Among them, 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. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1309 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0335] Processor 1310 may include one or more processing units. Optionally, processor 1310 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1310.

[0336] The radio frequency unit 1301 is configured to receive first information sent by a BSC device; wherein the first information is used for random access of the terminal.

[0337] Optionally, the first information includes any one of the following items: a first random access message, the first random access message includes MsgB, or the first random access message includes at least one of Msg 2 and Msg4; a first synchronization signal block SSB, the first SSB is used for signal synchronization in the random access process.

[0338] Optionally, the radio frequency unit 1301 is further used to receive random access confirmation information sent by the BSC device, where the random access confirmation information is used to indicate that the random access process between the terminal and the first device is completed.

[0339] Optionally, the radio frequency unit 1301 is further used to receive second information sent by the BSC device; wherein the second information includes at least one of the following: configuration information of a target reference signal, the target reference signal includes a first reference signal or a second reference signal, the first reference signal is used for measuring a first link in the target communication network, the second reference signal is used for measuring a second link in the target communication network, the first link includes a direct link from the terminal to the first device and a backscatter link between the BSC device and the first device, the second link includes a direct link from the first device to the terminal and a backscatter link between the BSC device and the terminal; target reference signal, the target reference signal includes the second reference signal; reference signal measurement result The measurement result includes at least one of a measurement result between the terminal and the first device, a measurement result between the BSC device and the terminal, and a measurement result between the BSC device and the first device; first communication parameter configuration information, the first communication parameter configuration information is determined according to the measurement result of the first reference signal; second communication parameter configuration information, the second communication parameter configuration information is determined according to the measurement result of the second reference signal; wherein the first communication parameter configuration information and the second communication parameter are parameter configuration information corresponding to the target communication network, and the BSC device in the target communication network can forward the link information between the first device and the terminal, or the BSC device can use the carrier and spectrum of the link information from the first device to the terminal to send its own information.

[0340] Optionally, the configuration information of the target reference signal includes at least one of the following: an identifier of the BSC device, used to indicate the BSC device and terminal related to the configuration information of the target reference signal; first resource-related information, used to indicate the relevant resources for the terminal to send the first reference signal; second resource-related information, used to indicate the relevant resources for the first device to send the second reference signal; signal forwarding information, used to indicate the BSC device to forward relevant information of the first reference signal or the second reference signal; third resource-related information, used to indicate the relevant resources for the terminal to send the measurement result corresponding to the second reference signal.

[0341] Optionally, the first communication parameter configuration information or the second communication parameter configuration information includes at least one of the following: fourth resource-related information, the fourth resource-related information is used to indicate relevant information of the backscatter signal sent by the BSC device after the random access process is completed; first signal transmission-related information is used to indicate at least one of the symbol rate, signal modulation mode, signal modulation parameters, and demodulation reference signal DMRS pattern when the BSC device sends the backscatter signal; second signal transmission-related information is used to indicate at least one of the symbol rate and DMRS pattern when the terminal or the first device sends the signal.

[0342] Optionally, when the first information includes a first SSB, the transmission period of the first SSB is N times the transmission period of the second SSB; wherein, the second SSB is sent by the first device to the SSB of the BSC device, or the second SSB is sent by the first device to the SSB of the BSC device using a specific beam, and N is an integer greater than or equal to 1.

[0343] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of method embodiment 800 and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0344] The embodiment of the present application further provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 7 or Figure 8 The network side device embodiment corresponds to the first device method embodiment or the second device method embodiment described above, and each implementation process and implementation method of the above method embodiment are applicable to the network side device embodiment and can achieve the same technical effect.

[0345] Specifically, the embodiment of the present application also provides a network side device. Figure 14As shown, network-side device 1400 includes an antenna 1401, a radio frequency device 1402, a baseband device 1403, a processor 1404, and a memory 1405. Antenna 1401 is connected to radio frequency device 1402. In the uplink direction, radio frequency device 1402 receives information via antenna 1401 and sends the received information to baseband device 1403 for processing. In the downlink direction, baseband device 1403 processes the information to be transmitted and sends it to radio frequency device 1402. Radio frequency device 1402 processes the received information and then sends it through antenna 1401.

[0346] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1403 , which includes a baseband processor.

[0347] The baseband device 1403 may include, for example, at least one baseband board on which a plurality of chips are arranged, such as Figure 14 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1405 through a bus interface to call the program in the memory 1405 to execute the network device operations shown in the above method embodiment.

[0348] The network side device may further include a network interface 1406 , which is, for example, a Common Public Radio Interface (CPRI).

[0349] Specifically, the network side device 1400 of the embodiment of the present application further includes: instructions or programs stored in the memory 1405 and executable on the processor 1404, and the processor 1404 calls the instructions or programs in the memory 1405 to execute. Figure 10 or Figure 11 The methods executed by the modules shown achieve the same technical effects, so they will not be described here to avoid repetition.

[0350] An embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned random access method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here.

[0351] 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), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0352] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned random access method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0353] 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.

[0354] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-mentioned random access method embodiment and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0355] An embodiment of the present application further provides a wireless communication system, including: a BSC device, a first device, and a second device. The BSC device is used to implement the various processes in the above-mentioned random access method embodiments 200-500, the first device can be used to implement the various processes of the above-mentioned random access method embodiment 700, and the second device can be used to implement the various processes of the above-mentioned random access method embodiment 800, and can achieve the same technical effects. To avoid repetition, they are not repeated here.

[0356] 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 sentence "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 pointed out 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.

[0357] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0358] 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 of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A random access method, characterized in that: include: The backscatter communication BSC device sends the first information to the first device or the second device; The first information is used for random access of the second device.

2. The method according to claim 1, characterized in that The first information includes any one of the following: a first random access message, wherein the first random access message includes at least one of MsgA and MsgB, or the first random access message includes at least one of Msg1, Msg 2, Msg 3, and Msg4; a first request, where the first request is used for the first device to authenticate the second device during the random access process; First synchronization signal block SSB.

3. The method according to claim 2, characterized in that In the case where the first information includes the MsgA or Msg 1, the MsgA or Msg 1 is sent based on a first random access opportunity RO position or period, wherein the first RO position or period is related to the first SSB.

4. The method according to claim 3, characterized in that The first random access message also carries the identification ID of the BSC device.

5. The method according to claim 2, characterized in that The first request includes at least one of the following: an identifier of the second device; The authentication related information of the second device includes at least a part of a second random access message, and the second random access message is used for random access between the BSC device and the second device.

6. The method according to claim 2 or 5, characterized in that In the case where the first information includes the first request, the method further includes: The BSC device receives a first response sent by the first device, where the first response is used to indicate whether authentication of the second device succeeds or fails; In a case where the first response indicates that the second device is successfully authenticated, random access confirmation information is sent to the second device according to the first response, where the random access confirmation information is used to indicate that a random access process between the second device and the first device is completed.

7. The method according to claim 6, characterized in that The first response includes at least one of the following: a third random access message, where the third random access message is determined according to the first request; The first indication information is used to indicate that the random access of the second device is successful; The second indication information is used to instruct the second device to retain or rewrite at least part of the random access related configuration.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The BSC device sends the second information to the first device or the second device; The second information includes at least one of the following: Configuration information of a target reference signal, the target reference signal including a first reference signal or a second reference signal, the first reference signal being used for measuring a first link in the target communication network, the second reference signal being used for measuring a second link in the target communication network, the first link including a direct link from the second device to the first device and a backscatter link between the BSC device and the first device, the second link including a direct link from the first device to the second device and a backscatter link between the BSC device and the second device; target reference signal; a reference signal measurement result, the measurement result comprising at least one of a measurement result between the second device and the first device, a measurement result between the BSC device and the second device, and a measurement result between the BSC device and the first device; first communication parameter configuration information, where the first communication parameter configuration information is determined according to a measurement result of the first reference signal; second communication parameter configuration information, where the second communication parameter configuration information is determined according to a measurement result of the second reference signal; The first communication parameter configuration information and the second communication parameter are parameter configuration information corresponding to the target communication network, and the BSC device in the target communication network can forward the link information between the first device and the second device, or the BSC device can use the carrier and spectrum of the link information from the first device to the second device to send its own information.

9. The method according to claim 8, characterized in that The configuration information of the target reference signal includes at least one of the following: The identifier of the BSC device is used to indicate the BSC device and the second device related to the configuration information of the target reference signal; The first resource related information is used to indicate the related resources of sending the first reference signal by the second device; The second resource related information is used to indicate the related resources of sending the second reference signal by the first device; Signal forwarding information, used to instruct the BSC device to forward relevant information of the first reference signal or the second reference signal; The third resource-related information is used to indicate a resource related to the sending of the measurement result corresponding to the second reference signal by the second device.

10. The method according to claim 8, characterized in that The first communication parameter configuration information or the second communication parameter configuration information includes at least one of the following: Fourth resource related information, where the fourth resource related information is used to indicate related information of the backscatter signal sent by the BSC device after the random access process is completed; The first signal transmission related information is used to indicate at least one of a symbol rate, a signal modulation mode, a signal modulation parameter, and a demodulation reference signal DMRS pattern when the BSC device sends a backscatter signal; The second signal transmission related information is used to indicate at least one of a symbol rate and a DMRS pattern when the second device or the first device sends a signal.

11. The method according to any one of claims 8 to 10, characterized in that: The method further comprises: When the second information is sent after the random access process between the second device and the first device is completed and the first information includes the first random access message, the BSC device receives third information, where the third information is used to indicate relevant information for the BSC device to forward the first information.

12. The method according to claim 11, characterized in that The third information includes at least one of a forwarding method or a forwarding resource of the first information.

13. The method according to any one of claims 1 to 12, characterized in that When the first information includes the first SSB, the BSC device sends the first SSB to the second device, including at least one of the following: The BSC device receives the second SSB sent by the first device, and forwards the first SSB to the second device according to the second SSB; The BSC device generates the first SSB, and sends the first SSB to the second device.

14. The method according to claim 13, characterized in that The sending the first SSB to the second device includes: The BSC device sends the first SSB to the second device according to fourth information; The fourth information includes at least one of the following: Fifth resource-related information, used to instruct the BSC device to send related resources of the first SSB; A reflection coefficient is used by the BSC device to send the first SSB.

15. The method according to claim 13, characterized in that The BSC device generates the first SSB, including: The BSC device generates the first SSB according to the fifth information; The fifth information includes at least one of the following: The sequence type of SSB; The sequence length of SSB; Cell ID: CellID.

16. The method according to any one of claims 13 to 15, characterized in that The transmission period of the first SSB is N times the transmission period of the second SSB; The second SSB is an SSB sent by the first device, or the second SSB is an SSB sent by the first device using a specific beam, and N is an integer greater than or equal to 1.

17. The method according to any one of claims 13 to 16, characterized in that The method further comprises: The BSC device receives sixth information sent by the first device; The sixth information includes at least one of the following: The BSC device forwards forwarding resource information of the random access opportunity RO; The third signal transmission related information is used to instruct the BSC device to carry the BSC device identifier to the related information in the first random access message; The pre-configuration information of the first random access message is used by the BSC device to reply to the second device with a message related to the random access process.

18. A random access method, characterized in that: include: The first device receives first information sent by the backscatter communication BSC device; The first information is used for random access of the second device.

19. The method according to claim 18, characterized in that The first information includes any one of the following: A first random access message, where the first random access message includes MsgA, or the first random access message includes at least one of Msg1 and Msg 3; A first request, where the first request is used by the first device to authenticate the second device during the random access process.

20. The method of claim 19, wherein: In the case where the first random access message includes Msg1 or MsgA, the first random access message also carries an identification ID of the BSC device.

21. The method of claim 19, wherein: The first request includes at least one of the following: an identifier of the second device; The authentication related information of the second device includes at least a part of a second random access message, and the second random access message is used for random access between the BSC device and the second device.

22. The method of claim 19, wherein: In the case where the first information includes the first request, the method further includes: The first device sends a first response according to the first request, where the first response is used to indicate whether authentication of the second device succeeds or fails.

23. The method of claim 22, wherein: The first response includes at least one of the following: a third random access message, where the third random access message is determined according to the first request; The first indication information is used to indicate that the random access of the second device is successful; The second indication information is used to instruct the second device to retain or rewrite at least part of the random access related configuration.

24. The method of claim 22, wherein: The method further comprises: receiving second information sent by the BSC device; The second information includes at least one of the following: a target reference signal, the target reference signal comprising a first reference signal, the first reference signal being used for measuring a first link in the target communication network, the first link comprising a direct link from the second device to the first device and a backscatter link between the BSC device and the second device; A reference signal measurement result, wherein the measurement result includes at least one of a measurement result between the second device and the first device, a measurement result between the BSC device and the second device, and a measurement result between the BSC device and the first device.

25. The method of claim 24, wherein: The method further comprises: When the second information is sent before the random access process between the second device and the first device is completed, and the first information includes the first random access message, the first device sends third information to the BSC device, and the third information is used to indicate the relevant information of the BSC device forwarding the first information.

26. The method of claim 25, wherein: The third information includes at least one of a forwarding method or a forwarding resource of the first information.

27. The method according to any one of claims 18 to 26, characterized in that The method further comprises: The first device sends the first SSB or the fifth information to the BSC device, and the fifth information is used by the BSC device to generate the first SSB.

28. The method of claim 27, wherein: The fifth information includes at least one of the following: The sequence type of SSB; The sequence length of SSB; Cell ID: CellID.

29. The method according to any one of claims 18 to 28, characterized in that The method further comprises: The first device sends fourth information, where the fourth information is used to instruct the BSC device to send relevant information of the first SSB.

30. The method of claim 29, wherein: The fourth information includes at least one of the following: Fifth resource-related information, used to instruct the BSC device to send related resources of the first SSB; A reflection coefficient is used by the BSC device to send the first SSB.

31. The method according to any one of claims 18 to 30, characterized in that The method further comprises: The first device sends a sixth message to the BSC device; The sixth message includes at least one of the following: The BSC device forwards forwarding resource information of the random access opportunity RO; The third signal transmission related information is used to instruct the BSC device to carry the BSC device identifier to the related information in the first random access message; The pre-configuration information of the first random access message is used by the BSC device to reply to the second device with a message related to the random access process.

32. A random access method, characterized in that: include: The second device receives the first information sent by the BSC device; The first information is used for random access of the second device.

33. The method of claim 32, wherein: The first information includes any one of the following: A first random access message, wherein the first random access message includes MsgB, or the first random access message includes at least one of Msg 2 and Msg4; The first synchronization signal block SSB is used for signal synchronization in the random access process.

34. The method of claim 32, wherein: The method further comprises: Receive random access confirmation information sent by the BSC device, where the random access confirmation information is used to indicate that a random access process between the second device and the first device is completed.

35. The method according to any one of claims 32 to 34, characterized in that The method further comprises: receiving second information sent by the BSC device; The second information includes at least one of the following: Configuration information of a target reference signal, the target reference signal including a first reference signal or a second reference signal, the first reference signal being used for measuring a first link in the target communication network, the second reference signal being used for measuring a second link in the target communication network, the first link including a direct link from the second device to the first device and a backscatter link between the BSC device and the first device, the second link including a direct link from the first device to the second device and a backscatter link between the BSC device and the second device; a target reference signal, wherein the target reference signal includes the second reference signal; a reference signal measurement result, the measurement result comprising at least one of a measurement result between the second device and the first device, a measurement result between the BSC device and the second device, and a measurement result between the BSC device and the first device; first communication parameter configuration information, where the first communication parameter configuration information is determined according to a measurement result of the first reference signal; second communication parameter configuration information, where the second communication parameter configuration information is determined according to a measurement result of the second reference signal; The first communication parameter configuration information and the second communication parameter are parameter configuration information corresponding to the target communication network, and the BSC device in the target communication network can forward the link information between the first device and the second device, or the BSC device can use the carrier and spectrum of the link information from the first device to the second device to send its own information.

36. The method of claim 35, wherein: The configuration information of the target reference signal includes at least one of the following: The identifier of the BSC device is used to indicate the BSC device and the second device related to the configuration information of the target reference signal; The first resource related information is used to indicate the related resources of sending the first reference signal by the second device; The second resource related information is used to indicate the related resources of sending the second reference signal by the first device; Signal forwarding information, used to instruct the BSC device to forward relevant information of the first reference signal or the second reference signal; The third resource-related information is used to indicate a resource related to the sending of the measurement result corresponding to the second reference signal by the second device.

37. The method of claim 35, wherein: The first communication parameter configuration information or the second communication parameter configuration information includes at least one of the following: Fourth resource related information, where the fourth resource related information is used to indicate related information of the backscatter signal sent by the BSC device after the random access process is completed; The first signal transmission related information is used to indicate at least one of a symbol rate, a signal modulation mode, a signal modulation parameter, and a demodulation reference signal DMRS pattern when the BSC device sends a backscatter signal; The second signal transmission related information is used to indicate at least one of a symbol rate and a DMRS pattern when the first device or the second device sends a signal.

38. The method according to any one of claims 32 to 37, characterized in that In the case where the first information includes a first SSB, a transmission period of the first SSB is N times a transmission period of the second SSB; The second SSB is sent by the first device to the SSB of the BSC device, or the second SSB is sent by the first device to the SSB of the BSC device using a specific beam, and N is an integer greater than or equal to 1.

39. A random access device, characterized in that: include: A transmission module, configured to send the first information to the first device or the second device; The first information is used for random access of the second device.

40. A random access device, characterized in that: include: A transmission module, configured to receive first information sent by a backscatter communication BSC device; The first information is used for random access of the second device.

41. A random access device, characterized in that: include: A transmission module, configured to receive first information sent by a backscatter communication BSC device; The first information is used for random access of the second device.

42. A communication device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 17 are implemented, or the steps of the method according to any one of claims 18 to 31 are implemented, or the steps of the method according to any one of claims 32 to 38 are implemented.

43. 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 the processor, it implements the steps of the method according to any one of claims 1 to 17, or implements the steps of the method according to any one of claims 18 to 31, or implements the steps of the method according to any one of claims 32 to 38.

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