A signal forwarding method and apparatus, an electronic device, and a storage medium

Abstract

Embodiments of the present application disclose a signal forwarding method and device, electronic equipment and storage medium. The method comprises: establishing a first access response with at least one terminal and a second access response with a base station; determining a first temporary identifier corresponding to each terminal in the first access response process and a second temporary identifier allocated by the base station in the second access response process, and generating a binding relationship between each first temporary identifier and second temporary identifier according to the access result of the access response process; and applying to the base station to establish an information transmission bearer for signal data forwarding according to the binding relationship. In the embodiments of the present application, the second temporary identifier allocated by the base station and the first temporary identifier configured to the terminal are respectively obtained in the access process, and the information transmission bearer is established to the base station through the binding relationship between the first temporary identifier and the second temporary identifier, so as to realize the signal forwarding between the base station and the terminal, improve the terminal signal quality, and enhance the network capacity.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a signal forwarding method, apparatus, electronic device, and storage medium. Background Technology

[0002] Cellular mobile networks refer to usable 2G / 3G / 4G / 5G networks. They use cellular wireless networking to connect terminals and base stations via wireless channels, thereby enabling communication between the base station and the terminal.

[0003] In existing technical solutions, signal forwarding is generally divided into two types: repeaters and uplink repeaters. Repeaters are co-channel amplification devices, used to enhance signals during wireless communication transmission. They are commonly used for bidirectional forwarding of physical signals between two network nodes. In the downlink, the repeater uses a donor antenna to pick up signals within the existing coverage area, uses a bandpass filter to effectively isolate signals outside the bandpass, and then amplifies the filtered signal before retransmitting it to the coverage area. In the uplink, signals from mobile phones within the coverage area are processed by the uplink amplification link and transmitted to the corresponding base station, thus achieving signal transmission between the base station and the mobile phone. Because this method uses direct amplification, it amplifies noise and interference along with the signal, leading to co-channel interference and extremely poor terminal signal quality.

[0004] Another type is the relay node. Relay refers to a system where base stations or users do not directly transmit signals to each other, but instead forward them through relay nodes after signal amplification or regeneration. 3GPP defines the link between a base station and a relay as a backhaul link, and the link between a relay and a terminal as an access link. Relays can be divided into in-band relays and out-band relays. When using in-band relays, the backhaul link and access link use the same frequency, and they employ time-division multiplexing to utilize time-domain resources to avoid self-interference. Figure 1 This is a schematic diagram of a signal forwarding structure using relay nodes in existing technologies, such as... Figure 1As shown, when relaying data to the terminal, the relay will not receive any data sent by the base station. When the backhaul link is configured to receive data sent by the base station on a specified time slot, the relay will not transmit downlink data to the terminal. The subframe occupied by the backhaul link is called a Multicast Broadcast Single Frequency Network (MBSFN) subframe (in-band relays use MBSFN subframes to implement eNB-RN-UE communication, and the relay link and access link support being on the same frame). The time slot where the MBSFN is located must avoid the time slot positions occupied by system messages, synchronization channels, and paging channels. In addition, the HARQ time constraints in the backhaul link and access link must also be considered. When using out-band relay, the backhaul link and access link use different frequencies, so they can use the same subframe simultaneously. However, considering the scarcity of spectrum resources, out-band relay is generally not used. When the relay uses the in-band method, in order to avoid the conflict of Hybrid Automatic Repeat reQuest (HARQ) between the backhaul link and the access link, the backhaul link is configured to transmit at a specified time slot position through higher-layer signaling. When the terminal has uplink data transmission, the relay needs to wait until the specified backhaul link time-frequency position before it can transmit. Similarly, when the base station has downlink data transmission, it also needs to wait until the backhaul link time-frequency position before it can transmit to the downlink, thus increasing the transmission delay. Summary of the Invention

[0005] In view of this, the present invention provides a signal forwarding method, apparatus, electronic device and storage medium, which can improve the signal quality of the terminal, reduce the signal forwarding delay, and enhance the network system capacity while meeting the requirement of full terminal coverage.

[0006] According to one aspect of the present invention, an embodiment of the present invention provides a signal forwarding method, the method comprising:

[0007] Establish a first access response with at least one terminal, and establish a second access response with the base station;

[0008] Determine the first temporary identifier corresponding to each terminal during the first access response process and the second temporary identifier allocated by the base station during the second access response process;

[0009] Based on the access results of the first access response and the second access response, a binding relationship between each of the first temporary identifiers and the second temporary identifiers is generated;

[0010] According to the binding relationship, an application is made to the base station to establish an information transmission bearer so as to forward signal data through the information transmission bearer.

[0011] According to another aspect of the present invention, embodiments of the present invention also provide a signal forwarding device, the device comprising:

[0012] An access establishment module is used to establish a first access response with at least one terminal and a second access response with a base station;

[0013] The identifier allocation module is used to determine the first temporary identifier corresponding to each terminal in the first access response process and the second temporary identifier allocated by the base station in the second access response process;

[0014] The relationship determination module is used to generate the binding relationship between each of the first temporary identifier and the second temporary identifier based on the access results of the first access response and the second access response;

[0015] The signal forwarding module is used to apply to the base station to establish an information transmission bearer according to the binding relationship, so as to forward signal data through the information transmission bearer.

[0016] According to another aspect of the present invention, embodiments of the present invention also provide an electronic device, the electronic device comprising:

[0017] At least one processor; and

[0018] A memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the signal forwarding method according to any embodiment of the present invention.

[0020] According to another aspect of the present invention, embodiments of the present invention also provide a computer-readable storage medium storing computer instructions for causing a processor to execute and implement the signal forwarding method described in any embodiment of the present invention.

[0021] The technical solution of this invention establishes a first access response with at least one terminal, receives messages sent by each terminal in the form of a base station, and feeds back the first temporary identifier corresponding to the terminal. It also establishes a second access response with the base station, sends messages to the base station in the form of a terminal, and receives the second temporary identifier allocated by the base station. This accurately distinguishes the identifiers corresponding to each terminal and the base station, facilitating subsequent binding relationship establishment. Based on the access results of the first and second access responses, a binding relationship is generated between each first temporary identifier and the second temporary identifier, binding the first temporary identifiers corresponding to multiple terminals into a single second temporary identifier, thus protecting terminal privacy. By applying to the base station to establish an information transmission bearer through the binding relationship, signal data forwarding is performed via the information transmission bearer. This allows multiple terminals on the forwarding side to be treated as a single terminal on the base station side, merging the signal data of multiple terminals into the signal data of a single terminal. Transmitting signal data through the information transmission bearer allows for larger transmission code blocks, improves frequency diversity, enhances terminal signal quality, reduces signal forwarding latency, and increases network system capacity while achieving full terminal coverage.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a signal forwarding structure using relay nodes in existing technology.

[0025] Figure 2 A flowchart of a signal forwarding method provided in an embodiment of the present invention;

[0026] Figure 3 This invention provides a flowchart of the access process corresponding to the access response during signal forwarding, as provided in one embodiment of the invention.

[0027] Figure 4 A flowchart illustrating signal data transmission during signal forwarding is provided in one embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the interaction structure of a base station, a signal forwarding device, and a terminal provided in an embodiment of the present invention;

[0029] Figure 6 This is a structural block diagram of a signal forwarding device provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] In one embodiment, Figure 2 This is a flowchart illustrating a signal forwarding method according to an embodiment of the present invention. This embodiment is applicable to the forwarding of signal data in a cellular network. The method can be executed by a signal forwarding device, which can be implemented in hardware and / or software and can be configured in an electronic device. Figure 2 As shown, the method includes:

[0034] S210, establish a first access response with at least one terminal, and establish a second access response with the base station.

[0035] The first access response can be understood as the access response when the signal relay station sends downlink signals to the terminal in the form of a base station. The second access response can be understood as the access response when the signal relay station sends uplink signals to the base station in the form of a terminal.

[0036] In this embodiment, the signal forwarding station can send uplink signals to the base station as a terminal, or send downlink signals to the terminal as a base station, making it an integrated device that combines terminal and base station functions. This can be understood as follows: when the signal forwarding station receives an uplink signal from at least one terminal, it can allocate a corresponding temporary cell identifier to the at least one terminal as a base station to establish a first access response with the at least one terminal; the signal forwarding station can also send uplink signals to the base station as a terminal. Upon receiving the uplink signal from the signal forwarding station, the base station will feed back the temporary cell identifier corresponding to the signal forwarding station to establish a second access response with the base station.

[0037] It should be noted that when a signal relay station transmits system broadcast messages as a base station, it uses the same downlink frequency as the base station. Of course, the downlink signal power of the signal relay station must be higher than the signal power of the base station's coverage area to ensure that all terminals within the base station's coverage area can be connected to the signal relay station.

[0038] S220. Determine the first temporary identifier corresponding to each terminal in the first access response process and the second temporary identifier allocated by the base station in the second access response process.

[0039] The first temporary identifier, also known as the first temporary cell identifier, refers to the temporary identifier issued by the signal forwarding station to each terminal in the form of a base station. The second temporary identifier, also known as the second temporary cell identifier, refers to the temporary identifier fed back to the signal forwarding station by the base station when the signal forwarding station sends an uplink signal to the base station in the form of a terminal. It should be noted that there is only one second temporary identifier, and the number of first temporary identifiers corresponds to the number of terminals.

[0040] In this embodiment, each terminal has a corresponding first temporary identifier. This can be understood as the signal relay station allocating a corresponding first temporary identifier to each terminal in the form of a base station. The allocation rules are not limited in this embodiment. For example, the first temporary identifier corresponding to terminal 1 is represented as TC-RNTI-1, the first temporary identifier corresponding to terminal 2 is represented as TC-RNTI-2, and the first temporary identifier corresponding to terminal 3 is represented as TC-RNTI-3.

[0041] In this embodiment, during interaction with at least one terminal, the signal forwarding station acts as a base station. The terminal sends uplink signals to the signal forwarding station. Upon receiving the uplink signal from the terminal, the location of the time-frequency resource corresponding to the uplink signal, as well as the Random Access Network Temporary Identifier (RA-RNTI) in the random access process, can be determined. The downlink control channel (PDCCH) scrambled with the RA-RNTI is used to schedule the downlink shared channel (PDSCH) carrying the Random Access Response (RAR) to obtain the first temporary cell identifier assigned to each terminal by the signal forwarding station in the form of a base station. In some embodiments, the signal forwarding station sends uplink signals to the base station in the form of a terminal. When the base station receives the uplink signal, it sends the RAR to the signal forwarding station to determine the second temporary identifier assigned to the signal forwarding station by the base station in the second access response process.

[0042] S230. Generate the binding relationship between each first temporary identifier and the second temporary identifier based on the access results of the first access response and the second access response.

[0043] The binding relationship can be understood as the binding relationship formed when each terminal's corresponding first temporary identifier is bound to a second temporary identifier based on the corresponding access result.

[0044] In this embodiment, the access results of the first access response and the second access response can be either successful access or failed access. Based on the access results corresponding to the first and second access responses, a binding relationship between the first temporary identifier and the second temporary identifier corresponding to at least one terminal can be generated. In some embodiments, specifically, upon receiving the third message of the random access procedure sent by at least one terminal at a specified time-frequency resource location, the signal forwarding station forwards the third message of the random access procedure to the base station at the specified uplink time-frequency resource location. Upon receiving the fourth message of the downlink control channel scheduling random access procedure sent by the base station, the signal forwarding station forwards the fourth message of the random access procedure to at least one terminal. If the terminal contention resolution address (MAC CE) contained in the fourth message of the random access procedure is the same as that in the third message, the signal forwarding station considers at least one terminal to have successfully accessed the system. It then changes the first temporary identifier corresponding to each of the at least one terminal to a first cell identifier, and changes the second temporary identifier allocated by the base station to a second cell identifier. Finally, it binds the first cell identifier corresponding to each of the at least one terminal that successfully accessed the forwarding station to a second cell identifier sent by the base station.

[0045] S240. Apply to the base station to establish an information transmission bearer according to the binding relationship, so as to forward signal data through the information transmission bearer.

[0046] In this context, the information transmission bearer can be understood as the signal transmission channel requested by the signal relay station from the base station after the binding relationship between the base station and the signal relay station is determined. In this embodiment, the information transmission bearer may include one or both of the Signaling Radio Bearer (SRB) and the Data Radio Bearer (DRB). Specifically, the SRB is used to transmit Radio Resource Control (RRC) signaling between the base station and the terminal; the DRB is used to transmit service data between the base station and the terminal.

[0047] In this embodiment, an application can be made to the base station to establish an information transmission bearer based on the binding relationship between the first temporary identifier and the second temporary identifier corresponding to each of at least one terminal. This allows for signal forwarding of uplink and / or downlink data through the mapping relationship between the information transmission bearer between the base station and the signal forwarding station, and between the signal forwarding station and at least one terminal. In some embodiments, when applying to the base station to establish an information transmission bearer for uplink data transmission, time-frequency resources corresponding to the uplink shared channel are allocated to at least one terminal via the downlink control channel. The uplink shared channel is received and stored at a specified time-frequency location. The signal forwarding station, based on the mapping relationship between the information transmission bearer with at least one terminal and the information transmission bearer between the signal forwarding station and the base station, sends uplink data to the base station on the uplink shared channel time-frequency resources allocated by the base station. In other embodiments, when applying to the base station to establish an information transmission bearer for downlink data transmission, in response to the base station scheduling the downlink shared channel via the downlink control channel, the downlink data transmitted by the downlink shared channel is received and buffered. Based on the mapping relationship between the information transmission bearer with at least one terminal and the information transmission bearer with the base station, the downlink data on the corresponding bearer is sent to at least one terminal.

[0048] The technical solution of this invention establishes a first access response with at least one terminal, receives messages sent by each terminal in the form of a base station, and feeds back the first temporary identifier corresponding to the terminal. It also establishes a second access response with the base station, sends messages to the base station in the form of a terminal, and receives the second temporary identifier allocated by the base station. This accurately distinguishes the identifiers corresponding to each terminal and the base station, facilitating subsequent binding relationship establishment. Based on the access results of the first and second access responses, a binding relationship is generated between each first temporary identifier and the second temporary identifier, binding the first temporary identifiers corresponding to multiple terminals into a single second temporary identifier, thus protecting terminal privacy. By applying to the base station to establish an information transmission bearer through the binding relationship, signal data forwarding is performed via the information transmission bearer. This allows multiple terminals on the forwarding side to be treated as a single terminal on the base station side, merging the signal data of multiple terminals into the signal data of a single terminal. Transmitting signal data through the information transmission bearer allows for larger transmission code blocks, improves frequency diversity, enhances terminal signal quality, reduces signal forwarding latency, and increases network system capacity while achieving full terminal coverage.

[0049] In one embodiment, Figure 3This is a flowchart of an access process corresponding to an access response during signal forwarding, provided by an embodiment of the present invention. Based on the above embodiments, this embodiment further refines the process of determining the first temporary identifier corresponding to each terminal in the first access response process and the second temporary identifier allocated by the base station in the second access response process, generating the binding relationship between each first temporary identifier and the second temporary identifier according to the access results of the first access response and the second access response, and applying to the base station to establish an information transmission bearer according to the binding relationship, so as to forward signal data through the information transmission bearer.

[0050] like Figure 3 As shown, the access process corresponding to the access response in this embodiment may specifically include the following steps:

[0051] S310, establish a first access response with at least one terminal, and establish a second access response with the base station.

[0052] S320: Receive a first message sent by at least one terminal, determine the time-frequency location of the first message, and the random access network temporary identifier used in the first access response process.

[0053] The first message, also known as MSG1, refers to the uplink preamble signal sent by the terminal to the signal relay station when the signal relay station acts as the base station. The random access network temporary identifier refers to the network temporary identifier assigned to the terminal by the base station during the random access response process.

[0054] In this embodiment, the terminal sends a preamble signal to the signal forwarding station. The main function of the preamble is to inform the signal forwarding station that there is a random access request and enable the signal forwarding station to estimate the transmission delay between itself and the terminal, so that the signal forwarding station can calibrate the uplink timing and inform the terminal of the calibration information through a timing advance instruction.

[0055] In this embodiment, during the interaction between at least one terminal and the signal forwarding station, the signal forwarding station acts as a base station. Each terminal sends Msg 1 to the signal forwarding station, and the signal forwarding station needs to respond to each terminal by sending Msg 2. When the signal forwarding station receives the uplink preamble signal sent by the terminal, it obtains the time-frequency position of the preamble signal. The time-frequency position of the preamble signal determines the value of RA-RNTI, and thus the random access network temporary identifier to be used in the random access response is known.

[0056] S330. In response to the first message, a second message is sent back to at least one terminal, and the downlink control channel is scrambled according to the random access network temporary identifier, and the downlink shared channel carrying the first access response is scheduled through the downlink control channel.

[0057] The second message, also known as Msg 2, refers to the second message (response message) in the random access response process that the signal relay station sends to the terminal on behalf of the base station. Scrambling can be understood as a digital signal processing method that multiplies the original signal with a scrambling code to obtain a new signal.

[0058] In this embodiment, the first access response includes a first temporary identifier assigned to each of the at least one terminal, and uplink scheduling authorization information that feeds back the third message sent by the at least one terminal. The third message, also known as Msg3, refers to the third message in the random access procedure, i.e., the RRC signaling message.

[0059] In this embodiment, the signal forwarding station uses a RA-RNTI scrambled PDCCH to schedule a PDSCH carrying a RAR. The RAR contains a first temporary identifier allocated by the signal forwarding station to at least one terminal in the form of a base station, and uplink scheduling authorization information that feeds back the third message sent by at least one terminal. Of course, when a terminal initiates a random access response, the preamble signal can be allowed to be transmitted on which time-frequency resources based on the possible Msg3 size and path loss.

[0060] S340. Send a first message to the base station and receive a second access response from the base station to determine the second temporary identifier allocated by the base station during the second access response process.

[0061] In this embodiment, the first message is a random access message sent by the signal relay station to the base station in the form of a terminal. The second access response includes a second temporary identifier assigned by the base station and uplink scheduling authorization information in the third message fed back by the base station.

[0062] In this embodiment, the signal forwarding station sends a first message to the base station as a terminal. The base station responds with a response message, Msg2, to the signal forwarding station. Upon receiving the preamble signal sent by the signal forwarding station, the base station obtains the time-frequency position of the preamble signal and thus determines the RA-RNTI required in the random access response. The base station uses the downlink control channel PDCCH scrambled with RA-RNTI to schedule the downlink shared channel carrying the RAR. The RAR carries the second temporary cell identifier allocated by the base station to the signal forwarding station and the uplink scheduling grant information for sending Msg3. It should be noted that the signal forwarding station stores the mapping relationship between the second temporary cell identifier and each first temporary cell identifier.

[0063] S350. Based on the uplink scheduling authorization information of the third message fed back by the base station during the second access response process, receive the third message sent by at least one terminal at a specified time-frequency resource location, and forward the third message to the base station at the specified uplink time-frequency resource location of the base station.

[0064] In this embodiment, when the terminal receives the RAR message sent by the signal forwarding station, it can obtain the uplink authorized scheduling uplink shared channel (PUSCH) information corresponding to the third message, and send the third message at the time-frequency resource location specified by the signal forwarding station. The signal forwarding station receives and stores the third message from the terminal, and then forwards the third message to the base station at the uplink time-frequency resource location specified by the base station.

[0065] S360. Upon receiving the downlink control channel scheduling fourth message from the base station, forward the fourth message to at least one terminal. If the terminal contention resolution address (MAC CE) contained in the fourth message is the same as that in the third message, consider that at least one terminal has successfully accessed the network. Change the first temporary identifier corresponding to each of the at least one terminal to the first cell identifier, and change the second temporary identifier allocated by the base station to the second cell identifier.

[0066] The fourth message refers to the contention resolution message sent by the base station to the terminal, which essentially extracts some of the same information from the third message. The first cell identifier can be understood as the first cell identifier corresponding to each terminal after successful access; in this embodiment, the number of first cell identifiers is the same as the number of first temporary identifiers. The second cell identifier can be understood as the second cell identifier corresponding to the signal relay station after successful terminal access.

[0067] In this embodiment, the signal forwarding station receives a fourth PDCCH (using a second temporary cell identifier to scramble the Cyclic Redundancy Check (CRC)) scheduling message from the base station. The signal forwarding station then sends a fourth PDCCH (using a first temporary cell identifier to scramble the CRC) scheduling message to at least one terminal. When a terminal receives the fourth message, it needs to compare it with the previously sent third message. If the comparison shows that the terminal contention resolution address (MAC CE) in the fourth message is the same as that in the third message, the contention is considered successful. The terminal then uses each of the first temporary cell identifiers as its own first cell identifier. This can be understood as each terminal changing its corresponding first temporary cell identifier to its own first cell identifier. Simultaneously, the signal forwarding station uses the second temporary cell identifier as its second cell identifier. Of course, the signal forwarding station needs to store the mapping relationship between the first cell identifier and the second cell identifier.

[0068] S370. If the access result of at least one terminal is successful, bind the first cell identifier corresponding to each of the at least one terminal that successfully accessed the forwarding station to the second cell identifier sent by the base station.

[0069] In this embodiment, after at least one terminal successfully accesses the network, the signal forwarding station binds the first cell identifier corresponding to each of the at least one terminal accessing the forwarding side to a second cell identifier assigned to the signal forwarding station by the base station. This can be understood as follows: for the base station, the multiple terminals bound together are considered as one terminal relative to the base station, corresponding to a single second cell identifier. For example, the first cell identifier corresponding to terminal 1 is represented as C-RNTI-1, and the first cell identifier corresponding to terminal 2 is represented as C-RNTI-2. Binding C-RNTI-1 and C-RNTI-2 to a second cell identifier on the base station side can be represented as C-RNTI-3, meaning C-RNTI-3 is the representative cell identifier for C-RNTI-1 and C-RNTI-2.

[0070] S380. If the Terminal Contention Resolution Address (MAC CE) contained in the fourth message is different from that in the third message, then at least one terminal is considered to have failed to access the system randomly.

[0071] In this embodiment, if when the terminal receives the fourth message, the result of comparing the fourth message with the previously sent third message is that the terminal contention resolution address (MAC CE) contained in the fourth message is different from that in the third message, the contention is considered to have failed, and the terminal will not change the first temporary cell identifiers and the second temporary cell identifiers corresponding to the signal forwarding station. In this case, the terminal will re-initiate the random access procedure, and the signal forwarding station will delete the historically stored mapping relationship between the first temporary cell identifiers and the second temporary cell identifiers.

[0072] S390. Delete the historically stored mapping relationship between the first temporary identifier and the second temporary identifier, and if at least one terminal re-initiates the first access response process and the second access response process, redetermine the access results of the first access response and the second access response to regenerate the binding relationship between each first temporary identifier and the second temporary identifier.

[0073] In this embodiment, if the Terminal Contention Resolution Address (MAC CE) contained in the fourth message is different from that in the third message, the signal forwarding station needs to delete the historically stored mapping relationship between the first temporary identifier and the second temporary identifier, and, upon receiving at least one terminal re-initiating the first access response process and the second access response process, redetermine the access results of the first access response and the second access response to regenerate the binding relationship between each first temporary identifier and the second temporary identifier.

[0074] The above-described technical solution of this invention binds the first cell identifier corresponding to each of the at least one terminal that successfully accessed the forwarding station to the second cell identifier sent by the base station when the access result of at least one terminal is successful. This binding protects the privacy of the terminal, preventing external parties from tracking the terminal's location in real time by tracking the second cell identifier.

[0075] In one embodiment, Figure 4 This is a flowchart of signal data transmission during signal forwarding, provided by an embodiment of the present invention. Based on the above embodiments, this embodiment further refines the process of applying to the base station to establish an information transmission bearer according to the binding relationship, so as to forward signal data through the information transmission bearer.

[0076] like Figure 4 As shown, the specific steps for signal data transmission during signal forwarding in this embodiment are as follows:

[0077] S410. Based on the number of corresponding first cell identifiers bound to the second cell identifier, apply to the base station to establish at least two radio signaling bearers, wherein the radio signaling bearers with the base station and the radio signaling bearers with at least one terminal have a one-to-one mapping relationship.

[0078] Among them, the wireless signaling bearer can be understood as the channel through which the signaling messages of the system are actually transmitted, and can be used to transmit RRC signaling between the base station and at least one terminal.

[0079] In this embodiment, to distinguish the SRBs of the access terminals on the forwarding side, it is necessary to apply to the base station to establish multiple SRBs based on the number of first cell identifiers corresponding to the forwarding side bound to the second cell identifier on the base station side, so as to allocate the corresponding SRBs to the terminals. It should be noted that there is a one-to-one mapping relationship between the SRBs between the signal forwarding station and the base station, and between the signal forwarding station and at least one terminal.

[0080] For example, assuming a signal forwarding station requests to establish four SRBs with a base station, this can be represented as base station <-> signal forwarding station establishing four SRBs, namely SRB 0, SRB1, SRB2, and SRB3. The signal forwarding station configures two SRBs each for terminal 1 and terminal 2. Therefore, the mapping relationship between the SRBs between the signal forwarding station and the base station, and between the signal forwarding station and at least one terminal, can be represented as follows: base station <-> signal forwarding station SRB 0 corresponds to forwarding station <-> terminal 1's SRB 0; base station <-> signal forwarding station SRB 1 corresponds to signal forwarding station <-> terminal 1's SRB 1; base station <-> signal forwarding station SRB 2 corresponds to signal forwarding station <-> terminal 2's SRB 0; and base station <-> signal forwarding station SRB 3 corresponds to signal forwarding station <-> terminal 2's SRB 1.

[0081] In this embodiment, when the access result of at least one terminal is successful, the first cell identifier corresponding to each of the at least one terminal that successfully accessed the forwarding station is bound to the second cell identifier sent by the base station. Through this binding and the one-to-one mapping relationship between the SRB of the base station and the SRB of at least one terminal, terminal privacy is protected. The outside world cannot track the location of the terminal in real time by tracking the second cell identifier, ensuring that the signal forwarding station sends the downlink data of the base station to the corresponding terminal with accuracy.

[0082] S420. When the signal data is uplink data, allocate time-frequency resources corresponding to the uplink shared channel to at least one terminal through the downlink control channel, and receive and save the uplink shared channel at the specified time-frequency position; wherein, the downlink control channel uses the first cell identifier corresponding to at least one terminal to scramble the cyclic redundancy check.

[0083] Uplink data can be understood as data sent by the terminal to the base station.

[0084] In this embodiment, when the signal data is uplink data, the signal forwarding station allocates time-frequency resources corresponding to the PUSCH to at least one terminal via the PDCCH, and receives and saves the PUSCH at a specified time-frequency location. The PDSCH uses the first cell identifier corresponding to each of the at least one terminal to scramble the CRC. For example, when terminal 1 sends uplink data, the signal forwarding station allocates PUSCH time-frequency resources to terminal 1 via the PDCCH (using the first cell identifier corresponding to terminal 1 to scramble the CRC), and then receives and saves the PUSCH at the specified time-frequency location. When terminal 2 sends uplink data, the signal forwarding station allocates PUSCH time-frequency resources to terminal 2 via the PDCCH (using the first cell identifier corresponding to terminal 2 to scramble the CRC), and then receives and saves the PUSCH at the specified time-frequency location.

[0085] S430. Based on the mapping relationship between the radio signaling bearer with at least one terminal and the radio signaling bearer with the base station, the uplink data of at least one terminal is mapped to the corresponding radio signaling bearer with the base station, and the uplink data is sent to the base station on the uplink shared channel time-frequency resources allocated by the base station through the downlink control channel, wherein the downlink control channel uses the second cell identifier to scramble the cyclic redundancy check.

[0086] In this embodiment, based on the one-to-one mapping relationship between the SRBs between the signal forwarding station and at least one terminal, and between the signal forwarding station and the base station, the uplink data of at least one terminal is mapped to the corresponding SRB between the terminal and the base station. The uplink data is then transmitted to the base station on the PUSCH time-frequency resources allocated by the base station through the PDCCH. The downlink control channel uses a second cell identifier to scramble the CRC. For example, when there are two terminals, terminal 1 and terminal 2, when the signal forwarding station receives the PUSCH from terminal 1 and terminal 2 at a specified time-frequency location, it maps the data of terminal 1 and terminal 2 to the corresponding SRB bearers between the base station and the signal forwarding station according to the SRB mapping relationship between the signal forwarding station and terminal 1 and terminal 2, and between the base station and the signal forwarding station. The data is then transmitted to the base station on the PUSCH time-frequency resources allocated by the base station through the PDCCH (with the second cell identifier scrambling the CRC).

[0087] S440. When the signal data is downlink data, in response to the base station scheduling the downlink shared channel through the downlink control channel, the downlink data transmitted by the downlink shared channel is received and buffered, wherein the downlink control channel uses the second cell identifier to scramble the cyclic redundancy check.

[0088] Downlink data can be understood as data sent from the base station to the terminal.

[0089] In this embodiment, when the signal data is downlink data, the base station schedules the PDSCH through the PDCCH (using the second cell identifier to scramble the CRC), and the signal forwarding station receives and buffers the downlink PDSCH data.

[0090] S450. Based on the mapping relationship between the radio signaling bearer with at least one terminal and the radio signaling bearer with the base station, the downlink data is mapped to the radio signaling bearer with at least one terminal, and the downlink shared channel is scheduled through the downlink control channel to send the downlink data on the corresponding bearer to at least one terminal; wherein, the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

[0091] In this embodiment, based on the mapping relationship between the SRBs with at least one terminal and the SRBs with the base station, downlink data is mapped to the SRBs with at least one terminal. The PDCCH schedules the PDSCH to send the downlink data on the corresponding bearer to at least one terminal. The PDCCH uses the first cell identifier corresponding to each of the at least one terminal to scramble the CRC. For example, if the terminals are terminal 1 and terminal 2, when the signal forwarding station receives downlink PDSCH data from terminals 1 and 2, according to the one-to-one mapping relationship between the SRBs of the signal forwarding station <-> terminals 1 and 2 and the base station <-> signal forwarding station SRBs, the downlink data is mapped to the SRB bearers of the signal forwarding station <-> terminals 1 and 2. The signal forwarding station schedules the PDSCH using the PDCCH (using the first cell identifier corresponding to terminal 1 to scramble the CRC) to send the downlink data on the corresponding bearer to terminal 1; the signal forwarding station schedules the PDSCH using the PDCCH (using the first cell identifier corresponding to terminal 2 to scramble the CRC) to send the downlink data on the corresponding bearer to terminal 2.

[0092] S460. Establish at least two data radio bearers with the base station; wherein the maximum number of data radio bearers is 8; wherein there is a one-to-one mapping relationship between the data radio bearers with the base station and the data radio bearers with at least one terminal.

[0093] In this embodiment, the data wireless bearer refers to the channel through which user data is actually transmitted, and can be used to carry service data between the base station and the terminal.

[0094] In this embodiment, a maximum of 8 DRBs can be established between the base station and each terminal. The DRBs corresponding to the base station <-> signal forwarding station can be represented as DRB 0 to DRB 7. It should be noted that there is a one-to-one mapping relationship between the DRBs between the signal forwarding station and the base station, and between the signal forwarding station and at least one terminal, to distinguish the transmitted data of different terminals. For example, the DRBs corresponding to the base station <-> signal forwarding station can be represented as DRB 0 to DRB 3. Assuming that the signal forwarding station configures 2 DRBs for terminal 1 and terminal 2 respectively, it can be represented as the signal forwarding station <-> terminal 1 being allocated DRB 0 to DRB 1, and the signal forwarding station <-> terminal 2 being allocated DRB 0 to DRB 1. Therefore, there is a one-to-one mapping relationship between the DRBs of the base station and the DRBs of at least one terminal. This can be expressed as follows: DRB 0 of the base station <-> signal forwarding station corresponds to DRB 0 of the signal forwarding station <-> terminal 1; DRB 1 of the base station <-> signal forwarding station corresponds to DRB 1 of the signal forwarding station <-> terminal 1; DRB 2 of the base station <-> signal forwarding station corresponds to DRB 0 of the signal forwarding station <-> terminal 2; and DRB 3 of the base station <-> signal forwarding station corresponds to DRB 1 of the signal forwarding station <-> terminal 2.

[0095] In this embodiment, a one-to-one mapping relationship is established between the DRB with the base station and the DRB with at least one terminal, thereby protecting the privacy of the terminal. External parties cannot track the location of the terminal in real time by tracking the second cell identifier, ensuring that the signal relay station accurately sends the downlink data of the base station to the corresponding terminal.

[0096] S470. When the signal data is uplink data, allocate time-frequency resources corresponding to the uplink shared channel to at least one terminal through the downlink control channel, and receive and save the uplink shared channel at the specified time-frequency position; wherein, the downlink control channel uses the first cell identifier corresponding to at least one terminal to scramble the cyclic redundancy check.

[0097] S480. Based on the data radio bearer between at least one terminal and the mapping relationship between the data radio bearer between the terminal and the base station, the uplink data of at least one terminal is mapped to the corresponding data radio bearer between the terminal and the base station, and the uplink data is sent to the base station on the uplink shared channel time-frequency resources allocated by the base station through the downlink control channel, wherein the downlink control channel uses a second cell identifier to scramble the cyclic redundancy check.

[0098] In this embodiment, the signal forwarding station maps the uplink data of at least one terminal to the corresponding DRB between itself and the base station based on the mapping relationship between the DRB with at least one terminal and the DRB with the base station, and sends the uplink data to the base station on the PUSCH time-frequency resources allocated by the base station through the PDCCH. The PDCCH uses the second cell identifier to scramble the CRC.

[0099] For example, when terminal 1 and terminal 2 send uplink data, when the signal forwarding station receives the PUSCH of terminal 1 and terminal 2 at the specified time-frequency position, it maps the data of terminal 1 and terminal 2 to the corresponding DRB bearer between the base station and the signal forwarding station according to the DRB mapping relationship between the signal forwarding station and terminal 1 and terminal 2 and between the base station and the signal forwarding station. The data is then sent to the base station on the PUSCH time-frequency resources allocated by the base station through PDCCH (second cell identifier scrambled by CRC).

[0100] S490. When the signal data is downlink data, in response to the base station scheduling the downlink shared channel through the downlink control channel, the downlink data transmitted by the downlink shared channel is received and buffered, wherein the downlink control channel uses the second cell identifier to scramble the cyclic redundancy check.

[0101] S4100: Based on the mapping relationship between the data radio bearer with at least one terminal and the data radio bearer with the base station, the downlink data is mapped to the data radio bearer with at least one terminal, and the downlink shared channel is scheduled through the downlink control channel to send the downlink data on the corresponding bearer to at least one terminal; wherein, the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

[0102] In this embodiment, the signal forwarding station maps downlink data to the DRB between itself and at least one terminal based on the mapping relationship between the DRB with at least one terminal and the DRB with the base station, and sends the downlink data on the corresponding bearer to at least one terminal through the PDCCH scheduling PDSCH; wherein, the PDCCH uses the first cell identifier corresponding to each of the at least one terminal to scramble the CRC.

[0103] For example, when a base station needs to send downlink data to terminal 1 and terminal 2, according to the one-to-one mapping relationship between the DRB of the signal forwarding station <-> terminal 1 and terminal 2 and the DRB of the base station <-> signal forwarding station, the downlink data is mapped to the DRB bearer of the signal forwarding station <-> terminal 1 and terminal 2; the signal forwarding station schedules the PDSCH through the PDCCH (using the first cell identifier corresponding to terminal 1 to scramble the CRC) to send the downlink data on the corresponding bearer to terminal 1; the signal forwarding station schedules the PDSCH through the PDCCH (using the first cell identifier corresponding to terminal 2 to scramble the CRC) to send the downlink data on the corresponding bearer to terminal 2.

[0104] It should be noted that the execution order of S410 to S450 and S460 to S4100 is not fixed. S410 to S450 can be executed first, followed by S460 to S4100; S460 to S4100 can be executed first, followed by S410 to S450; or S410 to S450 and S460 to S4100 can be executed simultaneously. This embodiment does not impose any restrictions on this.

[0105] The above-described technical solution of this invention, by applying to the base station to establish SRB and / or DRB, and the corresponding mapping relationship between SRB and / or DRB, ensures that the signal forwarding station accurately sends the downlink data of the base station to the corresponding terminal; by merging the uplink data of multiple terminals on the forwarding side and transmitting it to the base station in the form of a single terminal, the transmission of uplink and downlink data between the base station and the terminal can have a larger transmission code block, reduce the inner margin, and improve the effect of frequency diversity. Moreover, for uplink data transmission, it can also reduce the necessity of uplink scheduling and transmission, and reduce air interface latency.

[0106] In one embodiment, to facilitate a better understanding of the signal forwarding method, this embodiment can be used as a preferred embodiment for further explanation of the signal forwarding method. Figure 5This is a schematic diagram illustrating the interaction structure of a base station, a signal forwarding device, and a terminal according to an embodiment of the present invention. In this embodiment, the signal forwarding method is described in detail using one base station, one signal forwarding station, and two terminal devices (terminal 1 can also be represented as UE1 and terminal 2 can also be represented as UE2). In this embodiment, the signal forwarding method is applied to the signal forwarding station. It should be noted that Msg1 represents the first message in the above embodiment, Msg2 represents the second message in the above embodiment, Msg3 represents the third message in the above embodiment, Msg4 represents the fourth message in the above embodiment, macro base station refers to the base station in the above embodiment, TC-RNTI-1 represents the first temporary cell identifier corresponding to terminal 1, TC-RNTI-2 represents the first temporary cell identifier corresponding to terminal 2, TC-RNTI-3 represents the second temporary cell identifier, C-RNTI-1 represents the first cell identifier corresponding to terminal 1, C-RNTI-2 represents the first cell identifier corresponding to terminal 2, and C-RNTI-3 represents the second cell identifier.

[0107] In this embodiment, during the interaction between terminal 1 and the signal forwarding station, the signal forwarding station acts as a base station. Terminal 1 sends an uplink preamble signal (Msg1). The signal forwarding station receives the uplink preamble signal from terminal 1 and obtains the time-frequency location of the preamble. It then learns the network temporary identifier RA-RNTI for random access required in the RAR. The signal forwarding station uses the PDCCH scrambled with RA-RNTI to schedule the PDSCH carrying the RAR. The RAR contains a temporary cell identifier (TC-RNTI-1) allocated to terminal 1 by the signal forwarding station as a base station, along with uplink grant information (Msg3). Simultaneously, the signal forwarding station sends a preamble signal to the macro base station as a terminal and then receives the RAR from the macro base station. The RAR carries a second temporary cell identifier (TC-RNTI-3) allocated to the signal forwarding station by the macro base station, along with uplink grant information (Msg3). The signal forwarding station stores the mapping relationship between TC-RNTI-1 and TC-RNTI-3.

[0108] In this embodiment, terminal 1 receives the RAR message sent by the signal forwarding station to obtain the uplink grant scheduling PUSCH information corresponding to Msg3, and sends the Msg3 message at the specified time-frequency resource location; the signal forwarding station receives and stores the Msg3 message from terminal 1, and then forwards the Msg3 information to the macro base station at the uplink time-frequency resource location specified by the macro base station.

[0109] In this embodiment, the signal forwarding station receives the PDCCH (using TC-RNTI-3 to scramble the CRC) scheduling Msg4 sent by the macro base station, and sends the PDCCH (using TC-RNTI-1 to scramble the CRC) scheduling Msg4 to terminal 1. If the terminal 1 contention resolution address MAC CE contained in Msg4 is the same as Msg3, the contention is considered successful, and terminal 1 uses TC-RNTI-1 as C-RNTI-1, while the signal forwarding station uses TC-RNTI-2 as C-RNTI-2. The signal forwarding station stores the mapping relationship between C-RNTI-1 and C-RNTI-2. If the terminal contention resolution address MAC CE contained in Msg4 is different from Msg3, the contention is considered unsuccessful, and terminal 1 will re-initiate the random access procedure. The signal forwarding station deletes the previously stored mapping relationship between the first cell identifier and the second cell identifier.

[0110] In this embodiment, the interaction between terminal 2 and the signal relay station, as well as the interaction between the signal relay station and the base station, are the same as those between terminal 1, and will not be described in detail here.

[0111] In this embodiment, after terminal 1 and terminal 2 successfully connect, the signal forwarding station can bind the corresponding C-RNTI-1 and C-RNTI-2 of terminal 1 and terminal 2, respectively, to a C-RNTI-3 on the macro base station side. Terminal 1 and terminal 2, bound together, constitute a single terminal relative to the macro base station. Based on the number of forwarding-side RNTIs bound to the macro base station's RNTI, the forwarding station needs to request the establishment of four SRB bearers from the macro base station. The signal forwarding station configures two SRBs for each of terminal 1 and terminal 2. This can be represented as follows: Macro base station <-> forwarding station SRB 0 corresponds to forwarding station <-> terminal 1's SRB 0; Macro base station <-> forwarding station SRB 1 corresponds to forwarding station <-> terminal 1's SRB 1; Macro base station <-> forwarding station SRB 2 corresponds to forwarding station <-> terminal 2's SRB 0; Macro base station <-> forwarding station SRB 3 corresponds to forwarding station <-> terminal 2's SRB 1.

[0112] In this embodiment, the signal relay station configures two DRBs for both terminal 1 and terminal 2. This can be represented as relay station <-> terminal 1 being allocated DRB 0 to DRB 1, and relay station <-> terminal 2 being allocated DRB 0 to DRB 1. Macro base station <-> relay station DRB 0 corresponds to relay station <-> terminal 1's DRB 0; macro base station <-> relay station DRB 1 corresponds to relay station <-> terminal 1's DRB 1; macro base station <-> relay station DRB 2 corresponds to relay station <-> terminal 2's DRB 0; and macro base station <-> relay station DRB 3 corresponds to relay station <-> terminal 2's DRB 1.

[0113] In this embodiment, when terminal 1 sends uplink data, the signal forwarding station allocates PUSCH time-frequency resources to terminal 1 through PDCCH (using C-RNTI-1 to scramble the CRC), and then the signal forwarding station receives and saves the PUSCH at the designated time-frequency location. When terminal 2 sends uplink data, the signal forwarding station allocates PUSCH time-frequency resources to terminal 2 through PDCCH (using C-RNTI-2 to scramble the CRC), and then the signal forwarding station receives and saves the PUSCH information at the designated time-frequency location. When the signal forwarding station receives the PUSCH from terminal 1 and terminal 2 at the designated time-frequency location, the signal forwarding station maps the data of terminal 1 and / or terminal 2 to the corresponding SRB and / or DRB bearers between the macro base station and the forwarding station according to the SRB and / or DRB mapping relationship between the forwarding station and terminal 1 and / or terminal 2 and between the macro base station and the forwarding station. The data is then sent to the macro base station on the PUSCH time-frequency resources allocated by the macro base station through PDCCH (using C-RNTI-3 to scramble the CRC).

[0114] In this embodiment, when the macro base station sends downlink data to terminal 1 and terminal 2, the macro base station schedules the PDSCH through the PDCCH (using C-RNTI-3 to scramble the CRC). The signal forwarding station receives and buffers the downlink PDSCH data. When the signal forwarding station receives the downlink PDSCH data from the corresponding terminal 1 and terminal 2, the signal forwarding station maps the downlink data to the SRB and / or DRB bearers of the forwarding station <-> terminal 1 and / or terminal 2 according to the mapping relationship between the forwarding station <-> terminal 1 and / or terminal 2's SRB and / or DRB and the macro base station <-> forwarding station's SRB and / or DRB. The signal forwarding station schedules the PDSCH through the PDCCH (using C-RNTI-1 to scramble the CRC) and sends the downlink data on the corresponding bearer to terminal 1. The signal forwarding station schedules the PDSCH through the PDCCH (using C-RNTI-2 to scramble the CRC) and sends the downlink data on the corresponding bearer to terminal 2.

[0115] In one embodiment, Figure 6 This is a structural block diagram of a signal forwarding device according to an embodiment of the present invention. This device is suitable for forwarding signal data in a cellular network and can be implemented in hardware or software. It can be configured in an electronic device to implement a signal forwarding method according to an embodiment of the present invention. Figure 6 As shown, the device includes: an access establishment module 610, an identifier allocation module 620, a relationship determination module 630, and a signal forwarding module 640.

[0116] The access establishment module 610 is used to establish a first access response with at least one terminal and a second access response with a base station.

[0117] The identifier allocation module 620 is used to determine the first temporary identifier corresponding to each terminal in the first access response process and the second temporary identifier allocated by the base station in the second access response process;

[0118] The relationship determination module 630 is used to generate the binding relationship between each of the first temporary identifier and the second temporary identifier based on the access results of the first access response and the second access response;

[0119] The signal forwarding module 640 is used to apply to the base station to establish an information transmission bearer according to the binding relationship, so as to forward signal data through the information transmission bearer.

[0120] In this embodiment of the invention, the access establishment module and the identifier allocation module accurately distinguish the identifiers corresponding to each terminal and the base station by feeding back the first temporary identifier corresponding to the terminal in the form of a base station and receiving the second temporary identifier allocated by the base station in the form of a terminal, which facilitates the establishment of binding relationships. The relationship determination module and the signal forwarding module apply to the base station to establish an information transmission bearer according to the binding relationship, so as to forward signal data through the information transmission bearer, thereby improving the signal quality of the terminal, reducing the signal forwarding delay, and enhancing the network system capacity while meeting the requirement of full terminal coverage.

[0121] In one embodiment, the identifier allocation module 620 includes:

[0122] The identifier determination unit is used to receive a first message sent by the at least one terminal, determine the time-frequency position of the first message, and the random access network temporary identifier used in the first access response process.

[0123] The first identifier determination unit is configured to respond to the first message, feed back a second message to the at least one terminal, scramble the downlink control channel according to the random access network temporary identifier, and schedule the downlink shared channel carrying the first access response through the downlink control channel. The first access response includes a first temporary identifier assigned to each of the at least one terminal, and uplink scheduling authorization information that feeds back the third message sent by the at least one terminal.

[0124] The second identifier determination unit is used to send the first message to the base station and receive the second access response issued by the base station to determine the second temporary identifier allocated by the base station during the second access response process. The second access response includes the second temporary identifier allocated by the base station and the uplink scheduling authorization information of the third message fed back by the base station.

[0125] In one embodiment, the relationship determination module 630 includes:

[0126] The third message forwarding unit is used to receive the third message sent by the at least one terminal at a specified time-frequency resource location based on the uplink scheduling authorization information of the third message fed back by the base station during the second access response process, and forward the third message to the base station at the specified uplink time-frequency resource location of the base station.

[0127] The identifier changing unit is used to receive the downlink control channel scheduling fourth message sent by the base station, forward the fourth message to the at least one terminal, and if the terminal contention resolution address (MAC CE) contained in the fourth message is the same as that in the third message, it is considered that the at least one terminal has successfully accessed the network, and the first temporary identifier corresponding to the at least one terminal is changed to the first cell identifier, and the second temporary identifier allocated by the base station is changed to the second cell identifier.

[0128] A binding unit is configured to, when the access result of at least one terminal is successful, bind the first cell identifier corresponding to each of the at least one terminal that has successfully accessed the forwarding station to the second cell identifier sent by the base station.

[0129] In one embodiment, the relationship determination module 630 further includes:

[0130] The access failure unit is used to consider that the random access of at least one terminal has failed if the Terminal Contention Resolution Address (MAC CE) contained in the fourth message is different from that in the third message.

[0131] The access result re-determination unit is used to delete the historically stored mapping relationship between the first temporary identifier and the second temporary identifier, and, upon receiving the first access response process and the second access response process re-initiated by the at least one terminal, re-determine the access results of the first access response and the second access response to regenerate the binding relationship between each of the first temporary identifier and the second temporary identifier.

[0132] In one embodiment, the information transmission bearer includes a wireless signaling bearer, and correspondingly, the signal forwarding module 640 includes:

[0133] The first signaling establishment unit is used to apply to the base station to establish at least two radio signaling bearers based on the number of corresponding first cell identifiers bound to the second cell identifier, wherein there is a one-to-one mapping relationship between the radio signaling bearers with the base station and the radio signaling bearers with the at least one terminal.

[0134] The first uplink data transmission unit is configured to, when the signal data is uplink data, allocate time-frequency resources corresponding to the uplink shared channel to the at least one terminal through the downlink control channel, and receive and store the uplink shared channel at a specified time-frequency position; wherein, the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

[0135] The first uplink data transmission unit is configured to map the uplink data of the at least one terminal to the corresponding radio signaling bearer between the terminal and the base station based on the mapping relationship between the radio signaling bearer between the terminal and the base station, and to transmit the uplink data to the base station on the uplink shared channel time-frequency resources allocated by the base station through the downlink control channel, wherein the downlink control channel uses the second cell identifier to scramble the cyclic redundancy check.

[0136] In one embodiment, the information transmission bearer includes a wireless signaling bearer, and correspondingly, the signal forwarding module 640 further includes:

[0137] The second signaling establishment unit is used to apply to the base station to establish at least two radio signaling bearers based on the number of corresponding first cell identifiers bound to the second cell identifier, wherein there is a one-to-one mapping relationship between the radio signaling bearers with the base station and the radio signaling bearers with the at least one terminal.

[0138] The first downlink data receiving unit is configured to, in the case that the signal data is downlink data, receive the downlink data transmitted by the downlink shared channel and buffer it in response to the base station scheduling the downlink shared channel through the downlink control channel, wherein the downlink control channel uses a second cell identifier to scramble the cyclic redundancy check.

[0139] The first downlink data transmission unit is configured to map the downlink data onto the radio signaling bearer between the at least one terminal and the at least one terminal based on the mapping relationship between the radio signaling bearer between the at least one terminal and the radio signaling bearer between the at least one terminal and the base station, and to schedule the downlink shared channel through the downlink control channel to send the downlink data on the corresponding bearer to the at least one terminal; wherein the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

[0140] In one embodiment, the information transmission bearer includes a data wireless bearer, and correspondingly, the signal forwarding module 640 further includes:

[0141] The first data establishment unit is used to establish at least two data radio bearers with the base station; wherein the maximum number of data radio bearers is 8; wherein there is a one-to-one mapping relationship between the data radio bearers with the base station and the data radio bearers with the at least one terminal.

[0142] The second uplink data receiving unit is configured to, when the signal data is uplink data, allocate time-frequency resources corresponding to the uplink shared channel to the at least one terminal through the downlink control channel, and receive and store the uplink shared channel at a specified time-frequency position; wherein, the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

[0143] The second uplink data transmission unit is configured to map the uplink data of the at least one terminal to the corresponding data radio bearer between the terminal and the base station based on the mapping relationship between the data radio bearer with the at least one terminal and the data radio bearer with the base station, and to transmit the uplink data to the base station on the uplink shared channel time-frequency resources allocated by the base station through the downlink control channel, wherein the downlink control channel uses the second cell identifier to scramble the cyclic redundancy check.

[0144] In one embodiment, the information transmission bearer includes a data wireless bearer, and correspondingly, the signal forwarding module 640 further includes:

[0145] The second data establishment unit is used to establish at least two data radio bearers with the base station; wherein the maximum number of data radio bearers is 8; wherein there is a one-to-one mapping relationship between the data radio bearers with the base station and the data radio bearers with the at least one terminal.

[0146] The second downlink data receiving unit is configured to, in the case that the signal data is downlink data, receive the downlink data transmitted by the downlink shared channel and buffer it in response to the base station scheduling the downlink shared channel through the downlink control channel, wherein the downlink control channel uses a second cell identifier to scramble the cyclic redundancy check.

[0147] The second downlink data transmission unit is used to map the downlink data onto the data radio bearer between the at least one terminal and the at least one terminal based on the mapping relationship between the data radio bearer between the at least one terminal and the data radio bearer between the at least one terminal and the base station, and to schedule the downlink shared channel through the downlink control channel to send the downlink data on the corresponding bearer to the at least one terminal; wherein the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

[0148] The signal forwarding device provided in the embodiments of the present invention can execute the signal forwarding method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0149] In one embodiment, Figure 7 This is a schematic diagram of an electronic device provided for an embodiment of the present invention. The electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0150] like Figure 7 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0151] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0152] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as signal forwarding methods.

[0153] In some embodiments, the signal forwarding method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the signal forwarding method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the signal forwarding method by any other suitable means (e.g., by means of firmware).

[0154] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0155] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0156] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0157] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0158] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0159] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0160] In one embodiment, the present invention further includes a computer program product, the computer program product comprising a computer program that, when executed by a processor, implements the signal forwarding method described in any embodiment of the present invention.

[0161] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and no limitation is imposed herein.

[0162] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A signal forwarding method, characterized in that, include: Establish a first access response with at least one terminal, and establish a second access response with the base station; Determine the first temporary identifier corresponding to each terminal during the first access response process and the second temporary identifier allocated by the base station during the second access response process; Based on the access results of the first access response and the second access response, a binding relationship between each of the first temporary identifiers and the second temporary identifiers is generated; According to the binding relationship, an application is made to the base station to establish an information transmission bearer so as to forward signal data through the information transmission bearer.

2. The method according to claim 1, characterized in that, The determination of the first temporary identifier corresponding to each terminal during the first access response process and the second temporary identifier allocated by the base station during the second access response process includes: Receive a first message sent by the at least one terminal, determine the time-frequency location of the first message, and the random access network temporary identifier used in the first access response process; In response to the first message, a second message is fed back to the at least one terminal, and the downlink control channel is scrambled according to the random access network temporary identifier. The downlink shared channel carrying the first access response is scheduled through the downlink control channel. The first access response includes the first temporary identifier assigned to each of the at least one terminal, and uplink scheduling authorization information that feeds back the third message sent by the at least one terminal. The first message is sent to the base station, and the second access response issued by the base station is received to determine the second temporary identifier allocated by the base station during the second access response process. The second access response includes the second temporary identifier allocated by the base station and the uplink scheduling authorization information of the third message fed back by the base station.

3. The method according to claim 1, characterized in that, The step of generating the binding relationship between each of the first temporary identifier and the second temporary identifier based on the access results of the first access response and the second access response includes: Based on the uplink scheduling authorization information of the third message fed back by the base station during the second access response process, the system receives the third message sent by the at least one terminal at a specified time-frequency resource location, and forwards the third message to the base station at the specified uplink time-frequency resource location of the base station. Upon receiving the downlink control channel scheduling fourth message from the base station, the fourth message is forwarded to the at least one terminal. If the terminal contention resolution address (MAC CE) contained in the fourth message is the same as that in the third message, the at least one terminal is considered to have successfully accessed the network. The first temporary identifier corresponding to the at least one terminal is changed to the first cell identifier, and the second temporary identifier allocated by the base station is changed to the second cell identifier. If the access result of at least one terminal is successful, the first cell identifier corresponding to each of the at least one terminal that successfully accessed the forwarding station is bound to the second cell identifier sent by the base station.

4. The method according to claim 3, characterized in that, The step of generating the binding relationship between each of the first temporary identifier and the second temporary identifier based on the access results of the first access response and the second access response further includes: If the Terminal Contention Resolution Address (MAC CE) contained in the fourth message is different from that in the third message, then the random access of at least one terminal is considered to have failed. The historically stored mapping relationship between the first temporary identifier and the second temporary identifier is deleted. Upon receiving a notification that at least one terminal has re-initiated the first access response process and the second access response process, the access results of the first access response and the second access response are re-determined to regenerate the binding relationship between each of the first temporary identifiers and the second temporary identifiers.

5. The method according to claim 1, characterized in that, The information transmission bearer includes a wireless signaling bearer; correspondingly, the forwarding of signal data through the information transmission bearer includes: Based on the number of corresponding first cell identifiers bound to the second cell identifier, apply to the base station to establish at least two radio signaling bearers, wherein there is a one-to-one mapping relationship between the radio signaling bearers with the base station and the radio signaling bearers with the at least one terminal; When the signal data is uplink data, the downlink control channel allocates time-frequency resources corresponding to the uplink shared channel to the at least one terminal, and receives and saves the uplink shared channel at the specified time-frequency position; wherein, the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check. Based on the mapping relationship between the radio signaling bearer between the at least one terminal and the radio signaling bearer between the terminal and the base station, the uplink data of the at least one terminal is mapped to the corresponding radio signaling bearer between the terminal and the base station, and the uplink data is sent to the base station on the uplink shared channel time-frequency resources allocated by the base station through the downlink control channel, wherein the downlink control channel uses the second cell identifier to scramble the cyclic redundancy check.

6. The method according to claim 1, characterized in that, The information transmission bearer includes a wireless signaling bearer, and correspondingly, the forwarding of signal data through the information transmission bearer further includes: Based on the number of corresponding first cell identifiers bound to the second cell identifier, apply to the base station to establish at least two radio signaling bearers, wherein there is a one-to-one mapping relationship between the radio signaling bearers with the base station and the radio signaling bearers with the at least one terminal; When the signal data is downlink data, in response to the base station scheduling the downlink shared channel through the downlink control channel, the downlink data transmitted by the downlink shared channel is received and buffered, wherein the downlink control channel uses a second cell identifier to scramble the cyclic redundancy check; Based on the mapping relationship between the radio signaling bearer with the at least one terminal and the radio signaling bearer with the base station, the downlink data is mapped to the radio signaling bearer with the at least one terminal. The downlink shared channel is scheduled through the downlink control channel to send the downlink data on the corresponding bearer to the at least one terminal. The downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

7. The method according to claim 1, characterized in that, The information transmission bearer includes a data wireless bearer, and correspondingly, the forwarding of signal data through the information transmission bearer includes: At least two data radio bearers are established with the base station; wherein the maximum number of data radio bearers is 8; wherein there is a one-to-one mapping relationship between the data radio bearers with the base station and the data radio bearers with the at least one terminal; When the signal data is uplink data, the downlink control channel allocates time-frequency resources corresponding to the uplink shared channel to the at least one terminal, and receives and saves the uplink shared channel at the specified time-frequency position; wherein, the downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check. Based on the mapping relationship between the data radio bearer with the at least one terminal and the data radio bearer with the base station, the uplink data of the at least one terminal is mapped to the corresponding data radio bearer with the base station, and the uplink data is sent to the base station on the uplink shared channel time-frequency resources allocated by the base station through the downlink control channel, wherein the downlink control channel uses a second cell identifier to scramble the cyclic redundancy check.

8. The method according to claim 1, characterized in that, The information transmission bearer includes a data wireless bearer, and correspondingly, the forwarding of signal data through the information transmission bearer includes: At least two data radio bearers are established with the base station; wherein the maximum number of data radio bearers is 8; wherein there is a one-to-one mapping relationship between the data radio bearers with the base station and the data radio bearers with the at least one terminal; When the signal data is downlink data, in response to the base station scheduling the downlink shared channel through the downlink control channel, the downlink data transmitted by the downlink shared channel is received and buffered, wherein the downlink control channel uses a second cell identifier to scramble the cyclic redundancy check; Based on the mapping relationship between the data radio bearer with the at least one terminal and the data radio bearer with the base station, the downlink data is mapped to the data radio bearer with the at least one terminal. The downlink shared channel is scheduled through the downlink control channel to send the downlink data on the corresponding bearer to the at least one terminal. The downlink control channel uses the first cell identifier corresponding to each of the at least one terminal to scramble the cyclic redundancy check.

9. A signal relay device, characterized in that, include: An access establishment module is used to establish a first access response with at least one terminal and a second access response with a base station; The identifier allocation module is used to determine the first temporary identifier corresponding to each terminal during the first access response process and the second temporary identifier allocated by the base station during the second access response process. The relationship determination module is used to generate the binding relationship between each of the first temporary identifier and the second temporary identifier based on the access results of the first access response and the second access response; The signal forwarding module is used to apply to the base station to establish an information transmission bearer according to the binding relationship, so as to forward signal data through the information transmission bearer.

10. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the signal forwarding method according to any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the signal forwarding method according to any one of claims 1-8.

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