CN114080055B

CN114080055B - Method, device, terminal and network side equipment for establishing radio resource control connection

Info

Publication number: CN114080055B
Application number: CN202010814277.3A
Authority: CN
Inventors: 郑倩
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2024-04-16
Anticipated expiration: 2040-08-13
Also published as: CN114080055A; WO2022033549A1

Abstract

The application discloses a method, a device, a terminal and network side equipment for establishing radio resource control connection, and belongs to the technical field of wireless communication. The method for establishing the radio resource control connection comprises the following steps: the remote terminal sends a Uu RRC connection establishment request to the relay terminal; receiving a first RRC dedicated configuration returned by the relay terminal, and applying the first RRC dedicated configuration; and sending a Uu RRC connection establishment completion message to the relay terminal.

Description

Method, device, terminal and network side equipment for establishing radio resource control connection

Technical Field

The application belongs to the technical field of wireless communication, and particularly relates to a method, a device, a terminal and network side equipment for establishing wireless resource control connection.

Background

In a long term evolution (Long Term Evolution, LTE) system, a sidelink (sidelink, or a side link, etc.) is used for direct data transmission between terminal equipments (UEs) without a network device.

The wireless relay technology not only can be used for expanding cell coverage and compensating cell coverage blind points, but also can improve cell capacity through space resource multiplexing. For indoor coverage, the Relay technology can also play a role in overcoming the penetration loss and improving the indoor coverage quality.

Taking a simpler two-hop relay as an example, the wireless relay divides a link from a base station to a terminal into two links from the base station to the relay station and from the relay station to the terminal, so that a link with poor quality is replaced by two links with good quality, and higher link capacity and better coverage are obtained.

The relay (relay) already supported in the communication system is a terminal-to-network-side relay, that is, one end of the relay UE (i.e., relay terminal) is connected to a remote UE (i.e., remote terminal), and the other end is connected to the network side.

In a typical sidelink relay scenario, a remote UE needs to transmit data with a network side, but due to poor coverage, the relay UE is found to relay, wherein the relay UE and a base station communicate through a Uu interface, and the relay UE and the remote UE communicate through a sidelink (also referred to as PC 5) interface. In this scenario, data transmission is performed between the remote UE and the base station, and the relay UE plays a role in data transfer.

In the related art, a remote UE can only communicate with a relay UE using a pre-configuration if it is out of network coverage, and cannot communicate through a radio resource control (Radio Resource Control, RRC) connection.

Disclosure of Invention

The embodiment of the application provides a method, a device, a terminal and network side equipment for establishing radio resource control connection, which can solve the problem that a remote terminal outside network coverage cannot communicate through RRC connection.

In a first aspect, a radio resource control connection establishment method is provided, including: the remote terminal sends a Uu RRC connection establishment request to the relay terminal; receiving a first RRC dedicated configuration returned by the relay terminal, and applying the first RRC dedicated configuration; and sending a Uu RRC connection establishment completion message to the relay terminal.

In a second aspect, a radio resource control connection establishment method is provided, including: the relay terminal receives a Uu RRC connection establishment request sent by the remote terminal; forwarding a Uu RRC connection establishment request of the remote terminal to network side equipment; receiving a second RRC dedicated configuration returned by the network side equipment; transmitting a first RRC dedicated configuration to the remote terminal based on the second RRC dedicated configuration; receiving Uu RRC connection establishment completion information sent by the remote terminal; and sending the Uu RRC connection establishment completion message to the network side equipment.

In a third aspect, a radio resource control connection establishment method is provided, including: the network side equipment receives a Uu RRC connection establishment request of a remote terminal forwarded by a relay terminal; based on the Uu RRC connection establishment request, configuring a second RRC dedicated configuration for the remote terminal, wherein the second RRC dedicated configuration carries at least one of the following information: the SRB 1 special configuration of the remote terminal; SRB 2 specific configuration of the remote terminal; the SL-RNTI of the remote terminal; the sl-CS-RNTI of the remote terminal; the resource pool of the remote terminal is configured; transmitting the second RRC dedicated configuration to the relay terminal; and receiving a Uu RRC connection establishment completion message sent by the relay terminal.

In a fourth aspect, a radio resource control connection establishment apparatus is provided, applied to a remote terminal, the apparatus comprising: the first sending module is used for sending a Uu RRC connection establishment request to the relay terminal; the first receiving module is used for receiving a first RRC special configuration returned by the relay terminal and applying the first RRC special configuration; the first sending module is further configured to send a Uu RRC connection establishment complete message to the relay terminal.

In a fifth aspect, a radio resource control connection establishment apparatus is provided, which is applied to a relay terminal, and the apparatus includes: the second receiving module is used for receiving a Uu RRC connection establishment request sent by the remote terminal; a second sending module, configured to forward a Uu RRC connection establishment request of the remote terminal to a network side device; a third receiving module, configured to receive a second RRC dedicated configuration returned by the network side device; a third sending module, configured to send a first RRC dedicated configuration to the remote terminal based on the second RRC dedicated configuration; the second receiving module is further configured to receive a Uu RRC connection setup complete message sent by the remote terminal; the second sending module is further configured to send the Uu RRC connection establishment complete message to the network side device.

In a sixth aspect, a radio resource control connection establishment apparatus is provided, which is applied to a network side device, and the apparatus includes: a fourth receiving module, configured to receive a Uu RRC connection establishment request of the remote terminal forwarded by the relay terminal; a configuration module, configured to configure a second RRC dedicated configuration for the remote terminal based on the Uu RRC connection establishment request, where the second RRC dedicated configuration carries at least one of the following information: the SRB 1 special configuration of the remote terminal; SRB 2 specific configuration of the remote terminal; the SL-RNTI of the remote terminal; the sl-CS-RNTI of the remote terminal; the resource pool of the remote terminal is configured; a fourth transmitting module, configured to transmit the second RRC dedicated configuration to the relay terminal; the fourth receiving module is further configured to receive a Uu RRC connection setup complete message sent by the relay terminal.

In a seventh aspect, there is provided a terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect or implementing the steps of the method according to the second aspect.

In an eighth aspect, there is provided a network side device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the third aspect.

In a ninth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect, or performs the steps of the method according to the second aspect, or performs the steps of the method according to the third aspect.

In an eighth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to run a terminal program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect, or to run a network-side device program or instructions to implement the method according to the third aspect.

In a ninth aspect, there is provided a computer program product comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect or implementing the steps of the method according to the second aspect or implementing the steps of the method according to the third aspect.

In the embodiment of the application, the remote terminal sends the Uu RRC connection establishment request to the relay terminal, the relay terminal forwards the Uu RRC connection establishment request to the network side equipment, the network side equipment configures the RRC special configuration for the remote terminal based on the request, and the network side equipment forwards the RRC special configuration to the remote terminal, so that the remote terminal can be in an RRC connection state even if the remote terminal is out of network coverage, the special radio resource configuration of the network side equipment is obtained, and the communication efficiency of the remote terminal is improved.

Drawings

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a schematic flow chart of a radio resource control connection establishment method according to an embodiment of the present application;

fig. 3 is a schematic flow chart of another method for establishing a radio resource control connection according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a radio resource control connection establishment method according to an embodiment of the present application;

fig. 5 is a schematic flow chart of another method for establishing a radio resource control connection according to an embodiment of the present application;

fig. 6 is a schematic flow chart of another method for establishing a radio resource control connection according to an embodiment of the present application;

Fig. 7 is a schematic structural diagram of a radio resource control connection establishment device according to an embodiment of the present application;

fig. 8 is a schematic diagram illustrating another structure of a radio resource control connection establishment apparatus according to an embodiment of the present application;

fig. 9 is a schematic diagram illustrating another structure of a radio resource control connection establishment apparatus according to an embodiment of the present application;

fig. 10 is a schematic diagram illustrating another structure of a radio resource control connection establishment apparatus according to an embodiment of the present application;

fig. 11 shows a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 12 shows a schematic hardware structure of a terminal according to an embodiment of the present application;

fig. 13 shows a schematic hardware structure of a network side device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the "first" and "second" distinguished objects generally are of the type and do not limit the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. However, the following description describes a New air interface (NR) system for purposes of example, and NR terminology is used in much of the following description, although the techniques are also applicable to applications other than NR system applications, such as generation 6 (6 ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a relay terminal 11, a network device 12, and a remote terminal 13. In the embodiment of the present application, the remote terminal 13 and the relay terminal 11 communicate through a PC5 (sidelink) interface, and the relay terminal 11 and the network side device 12 communicate through a Uu interface.

The relay terminal 11 may also be called a relay (relay) terminal Device or a relay User terminal (UE), the remote terminal 13 may also be called a remote terminal Device or a remote (remote) UE, the relay terminal 11 and the remote terminal 13 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm Computer, a netbook, an ultra mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (VUE), a pedestrian terminal (PUE), and the like, and the Wearable Device includes: a bracelet, earphone, glasses, etc. Note that the specific types of the relay terminal 11 and the remote terminal 13 are not limited in the embodiments of the present application. The network side device 12 may be a base station or a core network, wherein the base station may be referred to as a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The radio resource control connection establishment method provided by the embodiment of the application is described in detail below by means of specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Fig. 2 is a flow chart illustrating a method for establishing a radio resource control connection in an embodiment of the present application, and the method 200 may be performed by a remote terminal. In other words, the method may be performed by software or hardware installed on the remote terminal. As shown in fig. 2, the method may include the following steps.

S210, the remote terminal sends a Uu RRC connection establishment request to the relay terminal.

In this embodiment of the present application, after a PC5 signaling (PC 5-S) link with a relay terminal (relay UE) is successfully established, or after a PC5RRC connection is successfully established, the remote terminal (remote UE) may send the Uu RRC connection establishment request to the relay UE to establish a new RRC connection, so as to obtain a dedicated radio resource configuration on the network side.

The remote terminal may send a Uu RRC connection setup request to the relay terminal through the PC5 interface. In a possible implementation manner, the remote terminal may send the Uu RRC connection establishment request through a first PC5 (sidelink) RRC message, where the first PC5RRC message is dedicated to sending the Uu RRC connection establishment request, that is, in the possible implementation manner, a new PC5RRC message is introduced to send the RRC connection establishment request, and the format of the PC5RRC message may be different from the format of the existing PC5RRC message in the communication system.

Alternatively, in another possible implementation, the remote terminal sends a second sidelink RRC message, wherein a dedicated information element (Information Element, IE) of the second sidelink RRC message carries the Uu RRC connection establishment request. That is, in this possible implementation, the remote terminal sends the Uu RRC connection setup request through a second PC5 RRC message, and the Uu RRC connection setup request is carried in a dedicated IE in the second PC5 RRC message. I.e. introducing a new IE in the PC5 RRC message, sending the Uu RRC connection establishment request through the new IE.

Or in another possible implementation manner, the remote terminal sends a third sidelink RRC message, wherein a dedicated Uu RRC container of the third sidelink RRC message carries the Uu RRC connection establishment request. That is, in this possible implementation, a Uu RRC connection establishment request is sent by introducing a Uu RRC connection in the PC5 RRC message.

In one possible implementation, the Uu RRC connection setup request may carry an identity of the remote terminal, e.g., a 5G S-temporary mobile subscription identity (5G S-Temporary Mobile Subscription Identifier, 5G-S-TMSI).

In another possible implementation, the Uu RRC connection setup request may also carry the reason for the connection setup request. The cause value may multiplex an existing value in the communication system, or may introduce a new value to enable the network side to distinguish whether the Uu RRC connection establishment request requests a normal Uu service or a relay-based Uu service.

S212, receiving a first RRC dedicated configuration returned by the relay terminal, and applying the first RRC dedicated configuration.

In this embodiment of the present application, after receiving the Uu RRC connection establishment request, the relay terminal may forward the Uu RRC connection establishment request of the remote terminal to the network side device, and after receiving the RRC connection establishment request, the network side device may return a second RRC dedicated configuration to the relay terminal, where the relay terminal returns the first RRC dedicated configuration to the remote terminal based on the second RRC dedicated configuration returned by the network side device. Wherein the first RRC-dedicated configuration may be a second RRC-dedicated configuration including part or all of the second RRC.

And the remote terminal applies the first RRC dedicated configuration after receiving the first RRC dedicated configuration, so as to obtain the dedicated radio resource configuration of the network side equipment.

In one possible implementation, the first RRC dedicated configuration carries at least one of the following information:

(1) The signaling radio bearer (Signalling Radio Bearer, SRB) of the remote terminal is configured exclusively.

(2) SRB 2 specific configuration of the remote terminal.

(3) A sidelink radio network temporary identity (Sidelink Radio Network Temporary Identity, SL-RNTI) of the remote terminal.

(4) A sidelink configuration scheduling radio network temporary identity (Sidelink Configured Scheduling Radio Network Temporary Identity, SL-CS-RNTI) of the remote terminal;

(5) And configuring a resource pool of the remote terminal.

The (3) and (4) items may be a configuration for a scheduling mode (mode) 1, i.e., a mode in which a network side device allocates resources, and the (5) item may be a configuration for a scheduling mode 2, i.e., a mode in which a UE selects resources by itself.

In one possible implementation, when the relay terminal returns the first RRC dedicated configuration to the remote terminal, the relay terminal may send the first RRC dedicated configuration through a dedicated PC5 RRC message, may send the first RRC dedicated configuration through a dedicated IE in the PC5 RRC message, or may send the first RRC dedicated configuration through a dedicated Uu RRC container in the PC5 RRC message. Thus, in this possible implementation, S212 may include any of the following:

Receiving the first RRC dedicated configuration sent by the relay terminal through a fourth sidelink RRC message, wherein the fourth sidelink RRC message is dedicated to sending the RRC dedicated configuration;

receiving a fifth sidelink RRC message sent by the relay terminal, wherein a special information unit of the fifth sidelink RRC carries the first RRC special configuration;

and receiving a sixth sidelink RRC message sent by the relay terminal, wherein a special Uu RRC container of the sixth sidelink RRC message carries the first RRC special configuration.

And S214, transmitting a Uu RRC connection establishment completion message to the relay terminal.

In the embodiment of the present application, the remote terminal may send a Uu RRC connection setup complete message to the relay terminal after receiving the first RRC dedicated configuration.

Similar to the Uu RRC connection establishment request, the remote terminal may send a Uu RRC connection establishment complete message through a dedicated PC5RRC message, or may also send a dedicated IE in the PC5RRC message, or may also send a dedicated Uu RRC container of the PC5RRC message. Thus, in one possible implementation, S214 may include any of the following:

The remote terminal sends the Uu RRC connection establishment completion message through a seventh sidelink RRC message, wherein the seventh sidelink RRC message is specially used for sending the Uu RRC connection establishment completion message;

the remote terminal sends an eighth sidelink RRC message, wherein a special information unit of the eighth sidelink RRC message carries the Uu RRC connection establishment completion message; or,

and the remote terminal sends a ninth sidelink RRC message, wherein a dedicated Uu RRC container of the ninth sidelink RRC message carries the Uu RRC connection establishment completion message.

The remote terminal sends Uu RRC connection establishment completion information to the network side equipment through the relay terminal, so that the network side equipment can know that the remote terminal has successfully received the RRC dedicated configuration.

According to the method provided by the embodiment of the application, the remote terminal forwards the request to the network side equipment through establishing the Uu RRC connection to the relay terminal, the network side equipment configures the RRC special configuration for the remote terminal after receiving the request, and the relay terminal sends the RRC special configuration to the remote terminal, so that the remote terminal can establish a new RRC connection, the special radio resource configuration of the network side equipment is obtained, and the communication efficiency of the remote terminal is improved.

Fig. 3 shows another flow diagram of a radio resource control connection establishment method in an embodiment of the present application, and the method 300 may be performed by a relay terminal. In other words, the method may be performed by software or hardware installed on the relay terminal. As shown in fig. 3, the method may include the following steps.

S310, the relay terminal receives a Uu RRC connection establishment request sent by the remote terminal.

The remote terminal may send the Uu RRC connection establishment request in the manner described in the method 200, and the description of S210 in the method 200 may be referred to specifically, and will not be repeated here.

S312, the Uu RRC connection establishment request of the remote terminal is forwarded to the network side equipment.

After receiving the PC5 RRC message sent by the remote terminal, the relay terminal forwards the RRC connection establishment request of the remote UE to the network side equipment according to the information analyzed in the PC5 RRC message.

In one possible implementation, the relay terminal may initiate a random access channel (Random Access Channel, RACH) procedure to enter a connected state and then forward the RRC connection setup request of the remote UE to the network side device. Thus, in this possible implementation, S312 may include: if the relay terminal configures RACH resources special for relay service, initiating a RACH process based on contention resolution, and after successful access, sending a Uu RRC connection establishment request of the remote terminal to the network side equipment.

Or in another possible implementation manner, if the relay terminal is not configured with RACH resources dedicated to relay service, the remote terminal may initiate a contention-based RACH procedure, and after the access is successful, send a Uu RRC connection establishment request of the remote terminal to the network side device.

In the above possible implementation manner, if contention resolution is successful in the contention-based RACH procedure, the relay terminal sets a temporary Cell radio network temporary identity (Cell RNTI, C-RNTI) of a random access response (Random Access Response, RAR) as the C-RNTI of the remote terminal. By the possible implementation manner, the temporary C-RNTI in the RAP is set as the C-RNTI of the remote UE, so that the network side can know that the RACH process is the RACH triggered by the remote UE, and the scheduled resources are used for the remote UE.

In another possible implementation manner, the relay terminal may also use a dedicated RRC procedure to enter a connected state, and forward the Uu RRC connection establishment request of the remote terminal to the network side device. Thus, in this possible implementation, S312 may include: and forwarding the Uu RRC connection establishment request of the remote terminal to the network side equipment through the SRB1 of the relay terminal. That is, in this possible implementation, the relay terminal does not need the RACH procedure, which corresponds to that the RRC connection establishment request is a message transmission by SRB1 directly multiplexed with the relay UE.

S314, receiving a second RRC dedicated configuration returned by the network side equipment.

In one possible implementation manner, if the relay terminal initiates a RACH procedure to enter a connected state, and forwards the Uu RRC connection establishment request to the network side device, the received second RRC dedicated configuration carries at least one of the following information:

(1) The SRB 1 special configuration of the remote terminal;

(2) SRB 2 specific configuration of the remote terminal;

(3) The SL-RNTI of the remote terminal;

(4) The SL-CS-RNTI of the remote terminal;

(5) And configuring a resource pool of the remote terminal.

Wherein, items (3) and (4) above may be directed to the allocation scheduling mode using mode1, and item (5) may be directed to the allocation scheduling mode of mode2, and reference may be made specifically to the related description in method 200 above.

In another possible implementation manner, if the relay terminal uses a dedicated RRC procedure to enter a connected state and forwards a Uu RRC connection establishment request of the remote terminal to the network side device, the received second RRC dedicated configuration carries at least one of the following information:

(1) A C-RNTI of the remote terminal; the C-RNTI is used for receiving and transmitting Uu data and/or signaling later, and if the remote terminal is out of network coverage, the relay terminal replaces the remote terminal to perform scheduling and monitoring of network side equipment.

(2) SRB 1 specific configuration of the remote terminal.

(3) SRB 2 specific configuration of the remote terminal.

(4) And the SL-RNTI of the remote terminal.

(5) And the SL-CS-RNTI of the remote terminal.

(6) And configuring a resource pool of the remote terminal.

Wherein, items (4) and (5) above may be directed to the allocation scheduling mode using mode1, and item (6) may be directed to the allocation scheduling mode of mode2, and specific reference may be made to the related description in method 200 above.

In one possible implementation, the network side device may send through a dedicated RRC message or may send through a dedicated IE of the RRC message when returning to the second RRC dedicated configuration. Thus, in this possible implementation, S314 may include: receiving the second RRC dedicated configuration sent by the network side equipment through a dedicated RRC message; or receiving an RRC message sent by the network side equipment, wherein a special information unit of the RRC message carries the second RRC special configuration.

And S316, based on the second RRC dedicated configuration, sending a first RRC dedicated configuration to the remote terminal.

In the embodiment of the present application, the relay terminal sends the first RRC dedicated configuration to the remote terminal based on the received second RRC dedicated configuration, where the first RRC dedicated configuration may include part or all of the information carried in the second RRC dedicated configuration.

In one possible implementation, corresponding to S212 in the above method 200, the relay terminal may send the first RRC dedicated configuration through a dedicated PC5 RRC message, or a dedicated IE in a PC5 RRC message, or a dedicated Uu RRC container of a PC5 RRC message, and thus, in this possible implementation, S316 may include at least one of:

transmitting the first RRC dedicated configuration through a fourth sidelink RRC message, wherein the fourth sidelink RRC message is dedicated to transmitting an RRC dedicated configuration;

a fifth sidelink RRC message is sent, wherein a special information unit of the fifth sidelink RRC carries the special configuration of the first RRC;

and sending a sixth sidelink RRC message, wherein a special Uu RRC container of the sixth sidelink RRC message carries the first RRC special configuration.

S318, receiving a Uu RRC connection establishment completion message sent by the remote terminal.

In one possible implementation, corresponding to S214 in the method 200 described above, S318 may include at least one of:

receiving the Uu RRC connection establishment completion message sent by the remote terminal through a seventh sidelink RRC message, wherein the seventh sidelink RRC message is specially used for sending the Uu RRC connection establishment completion message;

Receiving an eighth sidelink RRC message sent by the remote terminal, wherein a special information unit of the eighth sidelink RRC message carries the Uu RRC connection establishment completion message; or,

and receiving a ninth sidelink RRC message sent by the remote terminal, wherein a dedicated Uu RRC container of the ninth sidelink RRC message carries the Uu RRC connection establishment completion message.

And S320, transmitting the Uu RRC connection establishment completion message to the network side equipment.

And the relay terminal forwards the Uu RRC connection establishment completion message to the network side equipment according to the information analyzed in the received PC5 RRC message. In one possible implementation, S320 may include: and sending the Uu RRC connection establishment completion message on the SRB1 of the remote terminal. I.e. in this possible implementation, the Uu RRC connection setup complete message is sent on SRB1 configured by the network side device for the remote terminal.

Alternatively, in another possible implementation manner, in order for the network side device to identify the Uu RRC connection setup complete message currently transmitted for the remote terminal, S320 may include: and sending the Uu RRC connection establishment completion message, wherein the Uu RRC connection establishment completion message carries indication information, and the indication information indicates that the Uu RRC connection establishment completion message is of the remote terminal. For example, a 1bit indication differentiation may be introduced into the RRC connection setup complete message to distinguish between RRC connection setup complete messages for remote UEs. In this possible implementation, if the second RRC-dedicated configuration includes an SRB 1-dedicated configuration of the remote terminal, sending the Uu RRC connection setup complete message on SRB1 of the remote terminal; and if the second RRC dedicated configuration does not comprise the SRB1 dedicated configuration of the remote terminal, sending the Uu RRC connection setup complete message on the SRB1 of the relay terminal.

Through the method provided by the embodiment of the application, after receiving the Uu RRC connection establishment request message of the remote terminal, the relay terminal forwards the Uu RRC connection establishment request message to the network side equipment, and after receiving the RRC special configuration fed back by the network side equipment, the relay terminal sends the RRC special configuration to the remote terminal, so that the remote terminal can obtain the special radio resource configuration of the network side equipment, and the relay communication efficiency is improved.

Fig. 4 shows a schematic flow chart of a radio resource control connection establishment method in an embodiment of the present application, and the method 400 may be performed by a network side device. In other words, the method may be performed by software or hardware installed on the network-side device. As shown in fig. 4, the method may include the following steps.

S410, the network side equipment receives the Uu RRC connection establishment request of the remote terminal forwarded by the relay terminal.

A possible implementation manner of forwarding the Uu RRC connection establishment request by the relay terminal may be referred to the description in S312 of the method 300, and will not be described herein.

S412, configuring a second RRC dedicated configuration for the remote terminal based on the Uu RRC connection establishment request, wherein the second RRC dedicated configuration carries at least one of the following information: the SRB 1 special configuration of the remote terminal; SRB 2 specific configuration of the remote terminal; the SL-RNTI of the remote terminal; the sl-CS-RNTI of the remote terminal; and configuring a resource pool of the remote terminal.

And after receiving the Uu RRC connection establishment request of the remote terminal, the network side equipment configures a second RRC special configuration for the remote terminal, namely configures special radio resource configuration for the remote terminal.

And S414, the second RRC dedicated configuration is sent to the relay terminal.

The network side device may send the second RRC dedicated configuration through a dedicated RRC message, or may send the second RRC dedicated configuration through a dedicated IE of the RRC message, so in one possible implementation, S414 may include: the network side equipment sends the second RRC special configuration through special RRC message; or the network side equipment sends an RRC message, wherein a special information unit of the RRC message carries the second RRC special configuration.

S416, receiving a Uu RRC connection setup completion message sent by the relay terminal.

For a possible implementation manner of the relay terminal sending the Uu RRC connection setup complete message, reference may be made to the related description in the method 300, which is not described herein.

After receiving the Uu RRC connection setup complete message, the network side device may learn that the remote terminal has received and applied the RRC dedicated configuration configured by the network side device for the remote terminal, so that the network side device may apply the configured RRC dedicated configuration to provide communications for the remote terminal.

Fig. 5 shows a further flowchart of a radio resource control connection establishment method in an embodiment of the present application, and the method 500 may be performed by a remote terminal, a relay terminal, and a network-side device (e.g., a base station). In other words, the method may be performed by software or hardware installed on the remote terminal, the relay terminal, and the network-side device. As shown in fig. 5, the method may include the following steps.

S510, after the remote UE successfully establishes a PC5-S link (link) with a relay UE or a PC5 RRC connection (connection) is successfully established, a Uu RRC connection establishment request is initiated to the relay UE.

In one possible implementation, the remote UE sending the Uu RRC connection setup request on the PC5 interface may include:

(1) The communication system introduces a new PC5 RRC message to send the RRC connection establishment request, and the remote UE sends the RRC connection establishment request through the new PC5 RRC message; or (b)

(2) Introducing a new IE into the PC5 RRC message to send the RRC connection establishment request, and enabling the remote UE to send the RRC connection establishment request through the new IE of the PC5 RRC message; or (b)

(3) The RRC connection establishment request is sent by introducing a Uu RRC container (container) in the PC5 RRC message, and the remote UE sends the RRC connection establishment request through the Uu RRC container in the PC5 RRC message.

In one possible implementation, the Uu RRC connection setup request may carry the following information:

(1) Identity of remote UE, e.g. 5G-S-TMSI

(2) The cause of the connection establishment request may multiplex the cause value existing in the communication system, or may introduce a new value so that the network side may distinguish whether the connection establishment request is a normal Uu service or a relay-based Uu service.

S512, the relay UE forwards the RRC connection establishment request of the remote UE to the base station according to the information analyzed in the PC5 RRC message.

In this embodiment, if the relay UE is previously preconfigured or the network is configured with random access channel (Random Access Channel, RACH) resources dedicated to the relay service, a contention resolution based RACH procedure is initiated, followed by a RRC connection establishment request of the remote UE to the base station; if RACH resources dedicated to the relay service are not configured, the relay UE initiates a contention-based RACH procedure and then transmits an RRC connection setup request of the remote UE to the base station.

In addition, in one possible implementation, if contention resolution is successful, the relay UE sets the temporary C-RNTI in the RAR to the C-RNTI used by the remote UE.

S514, the relay UE receives the RRC dedicated configuration fed back by the base station.

Wherein the base station may feed back the RRC dedicated configuration through feedback signaling of any of:

(1) A new RRC message introduced by the communication system, the RRC message being used for transmitting the RRC-dedicated configuration;

(2) Introducing a new IE into the existing RRC message of the communication system to send the RRC dedicated configuration.

In one possible implementation, the RRC dedicated configuration may carry at least one of the following information:

(1) SRB 1 and/or SRB2 specific configuration of remote UE.

(2) SL-RNTI and/or SL-CS-RNTI for remote UE. This item is a configuration of the resource scheduling allocation scheme for mode 1.

(3) resource pool configuration for remote UE. This item is the configuration of the source schedule allocation for mode 2.

S516, the relay UE forwards part or all of the RRC dedicated configuration in S514 to the remote UE.

The relay UE forwarding signaling of the RRC-dedicated configuration may include any of the following:

(1) A new PC5 RRC message introduced by the communication system, the new PC5 RRC message being used for transmitting the RRC dedicated configuration;

(2) A PC5 RRC message, wherein a new IE is introduced into the PC5 RRC message, and the RRC dedicated configuration is sent through the new IE;

(3) And the PC5 RRC message is introduced into a Uu RRC container, and the RRC special configuration is sent through the Uu RRC container.

S518, the remote UE sends Uu RRC connection establishment completion message to the relay UE.

The specific signaling for sending the Uu RRC connection setup complete message on the PC5 interface includes any one of the following:

(1) A new PC5 RRC message introduced by the communication system, wherein the new PC5 RRC message is used for sending the RRC connection establishment completion message;

(2) A PC5 RRC message, wherein a new IE is introduced into the PC5 RRC message, and the RRC connection establishment completion message is sent through the new IE;

(3) And the PC5 RRC message is introduced into a Uu RRC container, and the RRC connection establishment completion message is sent through the Uu RRC container.

S520, the relay UE forwards the RRC connection establishment completion message of the remote UE to the base station according to the information analyzed in the PC5 RRC message.

In one possible implementation, the relay UE may send the RRC connection setup complete message on the dedicated configuration SRB1 of the Remote UE; alternatively, the relay UE may introduce 1bit indication information into the RRC connection setup complete message, and indicate that the RRC connection setup complete message is a completion message of the remote UE through the indication information.

Fig. 6 shows a further flowchart of a radio resource control connection establishment method in an embodiment of the present application, and the method 600 may be performed by a remote terminal, a relay terminal, and a network-side device (e.g., a base station). In other words, the method may be performed by software or hardware installed on the remote terminal, the relay terminal, and the network-side device. As shown in fig. 6, the method may include the following steps.

S610, after the remote UE successfully establishes the PC5-S link or the PC5 RRC connection with a relay UE, the remote UE initiates an RRC connection establishment request to the relay UE.

This step is the same as S510 in method 500.

S612, the relay UE forwards the RRC connection establishment request of the remote UE to the base station according to the information analyzed in the PC5 RRC message.

In this embodiment, the relay UE does not need to perform the RACH procedure, i.e. the RRC connection establishment request of the remote UE directly multiplexes SRB1 of the relay UE for message transmission.

S614, the relay UE receives the RRC dedicated configuration fed back by the base station.

The signaling of the base station to feed back the RRC dedicated configuration is the same as S514.

In this embodiment, the RRC dedicated configuration may carry at least one of the following information:

(1) The C-RNTI of the Remote UE can be used for subsequent transceiving of Uu data and/or signaling, and if the Remote UE is out of network coverage, the Remote UE replaces the Remote UE to perform scheduling monitoring of the base station.

(2) SRB1 and/or SRB2 specific configuration of remote UE

(3) SL-RNTI and/or SL-CS-RNTI of the remote UE, which is a configuration of the resource scheduling allocation scheme for mode 1.

(4) resource pool configuration of remote UE, which is configuration of resource scheduling allocation manner for mode 2

S616 to S620: s516 to S520 are the same as those of S516 to S520, and are not described in detail herein.

In the embodiment of the application, the RRC connection establishment method in the Sidelink relay scene is applied to remote UE (remote UE), so that the remote UE can acquire the special radio resource configuration of the base station even if the remote UE is out of network coverage, and relay communication efficiency is improved.

It should be noted that, in the radio resource control connection establishment method provided in the embodiments of the present application, the execution body may be a radio resource control connection establishment device, or a control module in the radio resource control connection establishment device, which is configured to execute the radio resource control connection establishment method. In the embodiment of the present application, a method for executing a radio resource control connection establishment by a radio resource control connection establishment device is taken as an example, and the radio resource control connection establishment device provided in the embodiment of the present application is described.

Fig. 7 is a schematic diagram of a radio resource control connection establishment apparatus applied to a remote terminal according to an embodiment of the present application, where, as shown in fig. 7, an apparatus 700 may include: a first transmitting module 701 and a first receiving module 702.

In this embodiment of the present application, a first sending module 701 is configured to send a Uu RRC connection establishment request to a relay terminal; a first receiving module 702, configured to receive a first RRC dedicated configuration returned by the relay terminal, and apply the first RRC dedicated configuration; the first sending module 701 is further configured to send a Uu RRC connection establishment complete message to the relay terminal.

In one possible implementation manner, the first sending module 701 sends a Uu radio resource control RRC connection establishment request to a relay terminal, including any one of the following:

the Uu RRC connection establishment request is sent through a first sidelink RRC message, wherein the first sidelink RRC message is exclusively used for sending the Uu RRC connection establishment request;

sending a second auxiliary link RRC message, wherein a special information unit of the second auxiliary link RRC message carries the first Uu RRC connection establishment request;

and sending a third sidelink RRC message, wherein a special Uu RRC container of the third sidelink RRC message carries the Uu RRC connection establishment request.

In one possible implementation manner, the Uu RRC connection establishment request carries at least one of the following information:

the identity of the remote terminal;

the reason for the connection establishment request.

In one possible implementation manner, the first receiving module 702 receives a first RRC dedicated configuration returned by the relay terminal, including any one of the following:

In one possible implementation manner, the first sending module 701 sends a Uu RRC connection setup complete message to the relay terminal, including any one of the following:

transmitting the Uu RRC connection setup completion message through a seventh sidelink RRC message, wherein the seventh sidelink RRC message is dedicated to transmitting the Uu RRC connection setup completion message;

an eighth sidelink RRC message is sent, wherein a special information unit of the eighth sidelink RRC message carries the Uu RRC connection establishment completion message; or,

and sending a ninth sidelink RRC message, wherein a dedicated Uu RRC container of the ninth sidelink RRC message carries the Uu RRC connection establishment completion message.

the signaling radio bearer SRB 1 of the remote terminal is specially configured;

SRB 2 specific configuration of the remote terminal;

a side link radio network temporary identifier SL-RNTI of the remote terminal;

the secondary link of the remote terminal is configured with a scheduling radio network temporary identifier sl-CS-RNTI;

and configuring a resource pool of the remote terminal.

According to the RRC connection establishment request device provided by the embodiment of the application, the first sending module 701 forwards the request to the relay terminal Uu for RRC connection establishment to the network side device, after the network side device receives the request, the network side device configures the RRC dedicated configuration for the remote terminal, the relay terminal sends the RRC dedicated configuration to the remote terminal, and the first receiving module 702 receives and applies the RRC dedicated configuration, so that the remote terminal can establish a new RRC connection, obtain the dedicated radio resource configuration of the network side device, and improve the communication efficiency of the remote terminal.

The radio resource control connection establishment device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile terminal or a non-mobile terminal. By way of example, mobile terminals may include, but are not limited to, the types of remote terminals 13 listed above, and non-mobile terminals may be servers, network attached storage (Network Attached Storage, NAS), personal computers (personal computer, PCs), televisions (TVs), teller machines, self-service machines, etc., and embodiments of the present application are not limited in particular.

The radio resource control connection establishment device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

The radio resource control connection establishment device provided in the embodiment of the present application can implement each process implemented by the remote terminal in the method embodiments of fig. 2 to 6, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted here.

Fig. 8 is a schematic diagram of another structure of a radio resource control connection establishment apparatus provided in an embodiment of the present application, where the radio resource control connection establishment apparatus is applied to a relay terminal, as shown in fig. 8, the apparatus 800 may include: a second receiving module 801, a second transmitting module 802, a third receiving module 803, and a third transmitting module 804.

In this embodiment of the present application, the second receiving module 801 is configured to receive a Uu RRC connection establishment request sent by a remote terminal; a second sending module 802, configured to forward, to a network side device, a Uu RRC connection establishment request of the remote terminal; a third receiving module 803, configured to receive a second RRC dedicated configuration returned by the network side device; a third sending module 804, configured to send a first RRC dedicated configuration to the remote terminal based on the second RRC dedicated configuration; the second receiving module 801 is further configured to receive a Uu RRC connection setup complete message sent by the remote terminal; the second sending module 802 is further configured to send the Uu RRC connection setup complete message to the network device.

In one possible implementation manner, the forwarding, by the second sending module 802, the Uu RRC connection establishment request of the remote terminal to a network side device includes:

if the relay terminal configures RACH resources special for relay service, initiating a RACH process based on contention resolution, and after successful access, sending a Uu RRC connection establishment request of the remote terminal to the network side equipment.

if the relay terminal is not configured with RACH resources special for relay service, initiating a contention-based RACH process, and after successful access, sending a Uu RRC connection establishment request of the remote terminal to the network side equipment.

In one possible implementation, as shown in fig. 9, the apparatus may further include: a setting module 805, configured to set the temporary C-RNTI of the random access response RAR to the C-RNTI of the remote terminal if the contention resolution is successful in the contention based RACH procedure.

In one possible implementation, the second RRC dedicated configuration carries at least one of the following information:

The SRB1 special configuration of the remote terminal;

SRB 2 specific configuration of the remote terminal;

the SL-RNTI of the remote terminal;

the sl-CS-RNTI of the remote terminal;

and configuring a resource pool of the remote terminal.

and forwarding the Uu RRC connection establishment request of the remote terminal to the network side equipment through the SRB1 of the relay terminal.

In one possible implementation, the second RRC dedicated configuration includes at least one of the following information:

a C-RNTI of the remote terminal;

the SRB1 special configuration of the remote terminal;

SRB 2 specific configuration of the remote terminal;

the SL-RNTI of the remote terminal;

the sl-CS-RNTI of the remote terminal;

and configuring a resource pool of the remote terminal.

In one possible implementation manner, the third receiving module 803 receives the second RRC dedicated configuration returned by the network side device, including:

receiving the second RRC dedicated configuration sent by the network side equipment through a dedicated RRC message; or,

and receiving an RRC message sent by the network side equipment, wherein a special information unit of the RRC message carries the second RRC special configuration.

In one possible implementation manner, the second sending module 802 sends the Uu RRC connection setup complete message to the network device, including:

transmitting the Uu RRC connection setup complete message on SRB 1 of the remote terminal; or,

and sending the Uu RRC connection establishment completion message, wherein the Uu RRC connection establishment completion message carries indication information, and the indication information indicates that the Uu RRC connection establishment completion message is of the remote terminal.

In one possible implementation, the first RRC-dedicated configuration includes some or all of the information in the second RRC-dedicated configuration.

The radio resource control connection establishment device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminals may include, but are not limited to, the types of relay terminals 11 listed above, and the non-mobile terminals may be servers, network attached storage (Network Attached Storage, NAS), personal computers (personal computer, PCs), televisions (TVs), teller machines, self-service machines, etc., and the embodiments of the present application are not limited in particular.

The radio resource control connection establishment device provided in the embodiment of the present application can implement each process implemented by the relay terminal in the method embodiments of fig. 2 to 6, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted here.

Fig. 10 is a schematic structural diagram of a radio resource control connection establishment apparatus according to an embodiment of the present application, where the apparatus may be applied to a network side device. As shown in fig. 10, the apparatus 1000 may include: a fourth receiving module 1001, a configuring module 1002, and a fourth transmitting module 1003.

In this embodiment of the present application, a fourth receiving module 1001 is configured to receive a Uu RRC connection establishment request of a remote terminal forwarded by a relay terminal; a configuration module 1002, configured to configure a second RRC dedicated configuration for the remote terminal based on the Uu RRC connection establishment request, where the second RRC dedicated configuration carries at least one of the following information: the SRB 1 special configuration of the remote terminal; SRB 2 specific configuration of the remote terminal; the SL-RNTI of the remote terminal; the sl-CS-RNTI of the remote terminal; the resource pool of the remote terminal is configured; a fourth transmitting module 1003, configured to transmit the second RRC dedicated configuration to the relay terminal; the fourth receiving module 1001 is further configured to receive a Uu RRC connection setup complete message sent by the relay terminal.

In one possible implementation manner, the fourth sending module 1003 sends the second RRC dedicated configuration to the relay terminal, including:

the second RRC dedicated configuration sent by a dedicated RRC message; or,

and sending an RRC message, wherein a special information unit of the RRC message carries the second RRC special configuration.

The radio resource control connection establishment device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a network side device. The apparatus may be a network side device. By way of example, the network-side devices may include, but are not limited to, the types of network-side devices 12 listed above, and embodiments of the present application are not specifically limited.

The radio resource control connection establishment apparatus provided in the embodiment of the present application can implement each process implemented by the network side device (e.g., the base station) in the method embodiments of fig. 2 to 6, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 11, the embodiment of the present application further provides a communication device 1100, including a processor 1101, a memory 1102, and a program or an instruction stored in the memory 1102 and capable of being executed on the processor 1101, where, for example, the communication device 1100 is a terminal, the program or the instruction is executed by the processor 1101 to implement each process of the radio resource control connection establishment method embodiment, and achieve the same technical effect. When the communication device 1100 is a network side device, the program or the instruction, when executed by the processor 1101, implements the respective processes of the above-described radio resource control connection establishment method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Fig. 12 is a schematic hardware structure of a terminal implementing an embodiment of the present application.

The terminal 1200 includes, but is not limited to: radio frequency unit 1201, network module 1202, audio output unit 1203, input unit 1204, sensor 1205, display unit 1206, user input unit 1207, interface unit 1208, memory 1209, and processor 1210.

Those skilled in the art will appreciate that the terminal 1200 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically connected to the processor 1210 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. Drawing of the figure 12The terminal structure shown in (c) does not constitute a limitation of the terminal, and the terminal may comprise more or less components than shown in the figures, or may combine certain components, or may be arranged in different components, which are not described in detail herein.

It should be understood that in the embodiment of the present application, the input unit 1204 may include a graphics processor (Graphics Processing Unit, GPU) 12041 and a microphone 12042, and the graphics processor 12041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts, a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 1201 processes the downlink data with the processor 1210; in addition, the uplink data is sent to the network side equipment. Typically, the radio frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1209 may be used to store software programs or instructions as well as various data. The memory 1209 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 1209 may include a high-speed random access Memory, and may also include a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable EPROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

Processor 1210 may include one or more processing units; alternatively, processor 1210 may integrate an application processor that primarily processes operating systems, user interfaces, and applications or instructions, etc., with a modem processor that primarily processes wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1210.

The radio frequency unit 1201 is configured to send a Uu radio resource control RRC connection establishment request to the relay terminal; receiving a first RRC dedicated configuration returned by the relay terminal; transmitting Uu RRC connection setup completion message to the relay terminal

A processor 1210 is configured to apply the first RRC-dedicated configuration.

Or,

the radio frequency unit 1201 is configured to:

receiving a Uu RRC connection establishment request sent by a remote terminal;

forwarding a Uu RRC connection establishment request of the remote terminal to network side equipment;

receiving a second RRC dedicated configuration returned by the network side equipment;

transmitting a first RRC dedicated configuration to the remote terminal based on the second RRC dedicated configuration;

receiving Uu RRC connection establishment completion information sent by the remote terminal;

and sending the Uu RRC connection establishment completion message to the network side equipment.

Through the terminal provided by the embodiment of the application, as the far-end terminal, the Uu RRC connection establishment request can be sent to the relay terminal, the relay terminal forwards the Uu RRC connection establishment request to the network side equipment, the network side equipment configures RRC special configuration for the far-end terminal based on the request, and the network side equipment forwards the RRC special configuration to the far-end terminal, so that the far-end terminal can be in an RRC connection state even if the far-end terminal is out of network coverage, the special radio resource configuration of the network side equipment is obtained, and the communication efficiency of the far-end terminal is improved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 13, the network device 1300 includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303. The antenna 1301 is connected to a radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information via the antenna 1301, and transmits the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes information to be transmitted, and transmits the processed information to the radio frequency device 1302, and the radio frequency device 1302 processes the received information and transmits the processed information through the antenna 1301.

The above-described band processing apparatus may be located in the baseband apparatus 1303, and the method performed by the network-side device in the above embodiment may be implemented in the baseband apparatus 1303, where the baseband apparatus 1303 includes the processor 1304 and the memory 1305.

The baseband apparatus 1303 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 13, where one chip, for example, a processor 1304, is connected to the memory 1305 to call a program in the memory 1305 to perform the network device operation shown in the above method embodiment.

The baseband device 1303 may further include a network interface 1306, such as a common public radio interface (common public radio interface, CPRI for short), for interacting with the radio frequency device 1302.

Specifically, the network side device of the embodiment of the present invention further includes: instructions or programs stored in the memory 1305 and executable on the processor 1304, the processor 1304 invokes the instructions or programs in the memory 1305 to perform the methods performed by the modules shown in fig. 10 and achieve the same technical effects, and are not repeated here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the embodiments of the radio resource control connection establishment method shown in fig. 2 to 6 are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a network side device program or instruction, to implement each process of the radio resource control connection establishment method embodiments shown in fig. 2 to 6, and to achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program product, where the computer program product includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, and when the program or the instruction is executed by the processor, the program or the instruction implements each process of the embodiments of the radio resource control connection establishment method shown in fig. 2 to fig. 6, and the same technical effects can be achieved, so that repetition is avoided and no further description is given here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A radio resource control connection establishment method, comprising:

the remote terminal sends a Uu Radio Resource Control (RRC) connection establishment request to the relay terminal;

receiving a first RRC dedicated configuration returned by the relay terminal, and applying the first RRC dedicated configuration;

transmitting Uu RRC connection establishment completion message to the relay terminal;

the remote terminal sends a Uu Radio Resource Control (RRC) connection establishment request to the relay terminal, which comprises any one of the following steps:

the remote terminal sends the Uu RRC connection establishment request through a first sidelink RRC message, wherein the first sidelink RRC message is specially used for sending the Uu RRC connection establishment request;

the remote terminal sends a second auxiliary link RRC message, wherein a special information unit of the second auxiliary link RRC message carries the Uu RRC connection establishment request;

and the remote terminal sends a third sidelink RRC message, wherein a special Uu RRC container of the third sidelink RRC message carries the Uu RRC connection establishment request.

2. The method according to claim 1, wherein the Uu RRC connection setup request carries at least one of the following information:

the identity of the remote terminal;

The reason for the connection establishment request.

3. The method according to claim 1, wherein receiving the first RRC dedicated configuration returned by the relay terminal includes any one of:

4. The method according to claim 1, wherein sending a Uu RRC connection setup complete message to the relay terminal comprises any one of:

the remote terminal sends an eighth sidelink RRC message, wherein a special information unit of the eighth sidelink RRC message carries the Uu RRC connection establishment completion message;

5. The method according to any of claims 1 to 4, wherein the first RRC dedicated configuration carries at least one of the following information:

SRB 2 specific configuration of the remote terminal;

a side link radio network temporary identifier SL-RNTI of the remote terminal;

the secondary link of the remote terminal configures a scheduling radio network temporary identifier SL-CS-RNTI;

and configuring a resource pool of the remote terminal.

6. A radio resource control connection establishment method, comprising:

the relay terminal receives a Uu RRC connection establishment request sent by the remote terminal;

transmitting the Uu RRC connection establishment completion message to the network side equipment;

The relay terminal receives a Uu RRC connection establishment request sent by the remote terminal, and the request comprises any one of the following steps:

the relay terminal receives the Uu RRC connection establishment request sent by the remote terminal through a first sidelink RRC message, wherein the first sidelink RRC message is specially used for sending the Uu RRC connection establishment request;

the relay terminal receives the Uu RRC connection establishment request sent by the remote terminal through a second auxiliary link RRC message, wherein a special information unit of the second auxiliary link RRC message carries the Uu RRC connection establishment request;

and the relay terminal receives the Uu RRC connection establishment request sent by the remote terminal through a third sidelink RRC message, wherein a special Uu RRC container of the third sidelink RRC message carries the Uu RRC connection establishment request.

7. The method according to claim 6, wherein forwarding the Uu RRC connection establishment request of the remote terminal to a network side device comprises:

if the relay terminal configures random access channel RACH resources special for relay service, initiating a RACH process based on contention resolution, and after successful access, sending a Uu RRC connection establishment request of the remote terminal to the network side equipment.

8. The method according to claim 7, wherein forwarding the Uu RRC connection establishment request of the remote terminal to a network side device comprises:

9. The method of claim 8, wherein the method further comprises:

if the contention resolution is successful in the contention-based RACH procedure, the relay terminal sets a temporary cell radio network temporary identity C-RNTI of a random access response RAR as the C-RNTI of the remote terminal.

10. The method of claim 7, wherein the second RRC-dedicated configuration carries at least one of the following information:

the SRB 1 special configuration of the remote terminal;

SRB 2 specific configuration of the remote terminal;

the SL-RNTI of the remote terminal;

SL-CS-RNTI of the remote terminal;

and configuring a resource pool of the remote terminal.

11. The method according to claim 6, wherein forwarding the Uu RRC connection establishment request of the remote terminal to a network side device comprises:

12. The method of claim 11, wherein the second RRC-dedicated configuration includes at least one of the following information:

a C-RNTI of the remote terminal;

the SRB1 special configuration of the remote terminal;

SRB 2 specific configuration of the remote terminal;

the SL-RNTI of the remote terminal;

the SL-CS-RNTI of the remote terminal;

and configuring a resource pool of the remote terminal.

13. The method according to any of the claims 6 to 12, wherein receiving the second RRC dedicated configuration returned by the network side device comprises:

14. The method according to any one of claims 6 to 12, wherein sending the Uu RRC connection setup complete message to the network side device comprises:

transmitting the Uu RRC connection setup complete message on SRB1 of the remote terminal; or,

15. The method according to any of claims 6 to 12, wherein the first RRC-dedicated configuration comprises part or all of the information in the second RRC-dedicated configuration.

16. A radio resource control connection establishment method, comprising:

the network side equipment receives a Uu RRC connection establishment request of a remote terminal forwarded by a relay terminal;

based on the Uu RRC connection establishment request, configuring a second RRC dedicated configuration for the remote terminal, wherein the second RRC dedicated configuration carries at least one of the following information: the SRB 1 special configuration of the remote terminal; SRB 2 specific configuration of the remote terminal; the SL-RNTI of the remote terminal; SL-CS-RNTI of the remote terminal; the resource pool of the remote terminal is configured;

transmitting the second RRC dedicated configuration to the relay terminal;

receiving a Uu RRC connection establishment completion message sent by the relay terminal;

the network side equipment receives a Uu RRC connection establishment request of a remote terminal forwarded by a relay terminal, wherein the Uu RRC connection establishment request comprises any one of the following steps:

The network side equipment receives a Uu RRC connection establishment request transmitted by the remote terminal through a first sidelink RRC message by the relay terminal, wherein the first sidelink RRC message is specially used for transmitting the Uu RRC connection establishment request;

the network side equipment receives a Uu RRC connection establishment request transmitted by the remote terminal through a second auxiliary link RRC message and forwarded by the relay terminal, wherein a special information unit of the second auxiliary link RRC message carries the Uu RRC connection establishment request;

and the network side equipment receives a Uu RRC connection establishment request transmitted by the remote terminal through a third sidelink RRC message and forwarded by the relay terminal, wherein a special Uu RRC container of the third sidelink RRC message carries the Uu RRC connection establishment request.

17. The method of claim 16, wherein transmitting the second RRC-dedicated configuration to the relay terminal comprises:

the network side equipment sends the second RRC special configuration through special RRC message; or,

and the network side equipment sends an RRC message, wherein a special information unit of the RRC message carries the second RRC special configuration.

18. A radio resource control connection establishment apparatus for use in a remote terminal, the apparatus comprising:

the first sending module is used for sending a Uu RRC connection establishment request to the relay terminal;

the first receiving module is used for receiving a first RRC special configuration returned by the relay terminal and applying the first RRC special configuration;

the first sending module is further configured to send a Uu RRC connection establishment complete message to the relay terminal;

the first sending module sends a Uu radio resource control RRC connection establishment request to a relay terminal, including any one of the following:

19. The apparatus of claim 18, wherein the first receiving module receives a first RRC dedicated configuration returned by the relay terminal, comprising any one of:

20. The apparatus of claim 18, wherein the first sending module sends a Uu RRC connection setup complete message to the relay terminal, comprising any one of:

21. The apparatus according to any of claims 18 to 20, wherein the first RRC dedicated configuration carries at least one of the following information:

SRB 2 specific configuration of the remote terminal;

a side link radio network temporary identifier SL-RNTI of the remote terminal;

and configuring a resource pool of the remote terminal.

22. A radio resource control connection establishment apparatus applied to a relay terminal, the apparatus comprising:

the second receiving module is used for receiving a Uu RRC connection establishment request sent by the remote terminal;

a second sending module, configured to forward a Uu RRC connection establishment request of the remote terminal to a network side device;

a third receiving module, configured to receive a second RRC dedicated configuration returned by the network side device;

a third sending module, configured to send a first RRC dedicated configuration to the remote terminal based on the second RRC dedicated configuration;

the second receiving module is further configured to receive a Uu RRC connection setup complete message sent by the remote terminal;

the second sending module is further configured to send the Uu RRC connection establishment complete message to the network side device;

Receiving a Uu RRC connection establishment request sent by a remote terminal, wherein the Uu RRC connection establishment request comprises any one of the following:

receiving the Uu RRC connection establishment request sent by the remote terminal through a first sidelink RRC message, wherein the first sidelink RRC message is exclusively used for sending the Uu RRC connection establishment request;

receiving the Uu RRC connection establishment request sent by the remote terminal through a second auxiliary link RRC message, wherein a special information unit of the second auxiliary link RRC message carries the Uu RRC connection establishment request;

and receiving the Uu RRC connection establishment request sent by the remote terminal through a third sidelink RRC message, wherein a special Uu RRC container of the third sidelink RRC message carries the Uu RRC connection establishment request.

23. The apparatus of claim 22, wherein the forwarding, by the second sending module, the Uu RRC connection establishment request of the remote terminal to a network side device includes:

24. The apparatus of claim 23, wherein the forwarding, by the second sending module, the Uu RRC connection establishment request of the remote terminal to a network side device includes:

25. The apparatus as recited in claim 24, further comprising:

and the setting module is used for setting the temporary C-RNTI of the random access response RAR as the C-RNTI of the remote terminal if the contention resolution is successful in the contention-based RACH process.

26. The apparatus of claim 23, wherein the second RRC-dedicated configuration carries at least one of the following information:

the SRB 1 special configuration of the remote terminal;

SRB 2 specific configuration of the remote terminal;

the SL-RNTI of the remote terminal;

SL-CS-RNTI of the remote terminal;

and configuring a resource pool of the remote terminal.

27. The apparatus of claim 22, wherein the forwarding, by the second sending module, the Uu RRC connection establishment request of the remote terminal to a network side device includes:

28. The apparatus of claim 27, wherein the second RRC-dedicated configuration includes at least one of the following information:

a C-RNTI of the remote terminal;

the SRB1 special configuration of the remote terminal;

SRB 2 specific configuration of the remote terminal;

the SL-RNTI of the remote terminal;

SL-CS-RNTI of the remote terminal;

and configuring a resource pool of the remote terminal.

29. The apparatus according to any one of claims 22 to 28, wherein the third receiving module receives a second RRC dedicated configuration returned by the network side device, including:

30. The apparatus according to any one of claims 22 to 28, wherein the second sending module sends the Uu RRC connection setup complete message to the network side device, including:

31. A radio resource control connection establishment apparatus applied to a network side device, the apparatus comprising:

a fourth receiving module, configured to receive a Uu RRC connection establishment request of the remote terminal forwarded by the relay terminal;

a configuration module, configured to configure a second RRC dedicated configuration for the remote terminal based on the Uu RRC connection establishment request, where the second RRC dedicated configuration carries at least one of the following information: the SRB 1 special configuration of the remote terminal; SRB 2 specific configuration of the remote terminal; the SL-RNTI of the remote terminal; SL-CS-RNTI of the remote terminal; the resource pool of the remote terminal is configured;

a fourth transmitting module, configured to transmit the second RRC dedicated configuration to the relay terminal;

the fourth receiving module is further configured to receive a Uu RRC connection setup complete message sent by the relay terminal;

Receiving a Uu RRC connection establishment request of a remote terminal forwarded by a relay terminal, wherein the Uu RRC connection establishment request comprises any one of the following steps:

receiving a Uu RRC connection establishment request transmitted by the remote terminal through a first sidelink RRC message by the relay terminal, wherein the first sidelink RRC message is specially used for transmitting the Uu RRC connection establishment request;

receiving a Uu RRC connection establishment request transmitted by the remote terminal through a second auxiliary link RRC message and forwarded by the relay terminal, wherein a special information unit of the second auxiliary link RRC message carries the Uu RRC connection establishment request;

and receiving a Uu RRC connection establishment request transmitted by the remote terminal through a third sidelink RRC message and forwarded by the relay terminal, wherein a special Uu RRC container of the third sidelink RRC message carries the Uu RRC connection establishment request.

32. The apparatus of claim 31, wherein the fourth transmitting module transmits the second RRC-dedicated configuration to the relay terminal, comprising:

the second RRC dedicated configuration sent by a dedicated RRC message; or,

33. A terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the radio resource control connection establishment method of any one of claims 1 to 5 or the steps of the radio resource control connection establishment method of any one of claims 6 to 15.

34. A network side device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the radio resource control connection establishment method of any of claims 16 to 17.

35. A readable storage medium having stored thereon a program or instructions which when executed by a processor:

implementing a radio resource control connection establishment method as claimed in any one of claims 1 to 5; or alternatively

The steps of implementing a radio resource control connection establishment method as claimed in any of claims 6 to 15; or alternatively

The steps of implementing a radio resource control connection establishment method as claimed in any of claims 16 to 17.