WO2021217379A1

WO2021217379A1 - State transition method and apparatus of relay apparatus

Info

Publication number: WO2021217379A1
Application number: PCT/CN2020/087337
Authority: WO
Inventors: 马川; 谭巍; 刘琼; 晋英豪
Original assignee: 华为技术有限公司
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-11-04

Abstract

The present application provides a state transition method and apparatus of a relay apparatus. A network device generates a state transition instruction which is used for instructing the relay apparatus to perform transition between a third state and a first state or between the third state and a second state, and the state transition instruction is sent to the relay apparatus; and the relay apparatus receives the state transition instruction and performs state transition according to the state transition instruction. By using the solution of the present application, a network device can control a relay apparatus to be flexibly transitioned between different energy consumption states, and the energy consumption of the relay apparatus is thus saved as much as possible while a service requirement is met.

Description

State transition method and device of relay device

Technical field

This application relates to the field of communication technology, and in particular to a method and device for state transition of a relay device.

Background technique

Multi-level architecture, also known as multi-hop network or relay network, refers to a cellular network that includes relay nodes. As shown in Figure 1, the multi-level architecture contains two types of nodes: donor node (DN) and relay node (RN) (the figure shows two relay nodes: RN1 and RN2) . The DN is directly connected to the core network (core network, CN); the RN is not directly connected to the core network, but is connected to the DN through one or more hops, and then the DN is transmitted back to the core network. The RN can provide access services for user equipment (UE) (for example, RN1 provides access services for UE1, RN2 provides access services for UE2, etc.), and can also provide relay services for other RNs.

RN logically consists of two parts: RN-U and RN-B (U stands for UE, B stands for base station (BS)): RN-U functions as a user equipment to establish an air interface connection with an upstream node, and Data and control signaling are transmitted on the air interface; the function of RN-B is to establish an air interface connection with downstream nodes and UE as a base station, and transmit data and control signaling on the air interface.

According to the states of RN-U and RN-B, RN can be divided into first state and second state at present.

Among them, the first state (called the normal state):

·RN-U is in radio resource control (RRC) connected state (that is, RRC_CONNECTED state), and performs all the functions of RN-U, that is, as a user equipment to establish an air interface connection with an upstream node, and perform data and control on the air interface Signaling transmission;

RN-B is in the on state, performing all the functions of RN-B, such as broadcasting synchronization signals and system information, establishing connections with user equipment or downstream nodes, and transmitting data and control signaling on the air interface.

The second state (called energy-saving state):

· The RN-U is in the RRC inactive state (that is, the RRC_INACTIVE state), performs the inactive state function of the RN-U, and is in the connection management-connected (CM-Connected) state. RN-U can perform the following operations: save access stratum context, receive system information, receive paging messages, perform radio access network notification area (RNA) updates, and monitor physical downlink control Channel (physical downlink control channel, PDCCH) and paging control channel (paging control channel, PCCH), stop receiving data from the upstream RN node or DN, etc.

·RN-B is in the half-on state, and only performs the functions of the RN-B in the half-on state, such as monitoring the physical random access channel (PRACH), broadcasting synchronization signals and system information.

When the RN is in the first state, all functions can be performed; when the RN is in the second state, only part of the functions are performed. Compared with the first state, the second state can save energy. Therefore, the second state can be called the energy-saving state.

However, when RN is in the second state, RN-B is in a half-on state, and energy is still consumed. How to keep the RN in a proper state, so as to save the energy consumption of the RN as much as possible while meeting service requirements, is a problem to be solved in this application.

Summary of the invention

The embodiments of the present application provide a method and device for state transition of a relay device, so that the relay device is in a proper state, so that the energy consumption of the relay device is saved as much as possible while meeting service requirements.

In a first aspect, a state transition method of a relay device is provided, the method includes: a network device generates a state transition instruction, the state transition instruction is used to instruct the relay device to perform a third state and a first state, Or the transition between the third state and the second state, wherein the relay device includes RN-B and RN-U, and the first state includes that the RN-B is in the on state and the RN-U U is in a radio resource control (radio resource control, RRC) connected state, the second state includes that the RN-B is in a half-on state and the RN-U is in an RRC inactive state, and the third state includes the The RN-B is in the off state and the RN-U is in the RRC inactive state; and the network equipment sends the state transition indication to the relay device. Therefore, the network equipment can control the relay device to switch between different energy consumption states flexibly, and save the energy consumption of the relay device as much as possible while meeting service requirements.

In one implementation, the relay device is in the first state, and the network device sending the state transition indication to the relay device includes: the network device sending an RRC message to the relay device, The RRC message includes the state transition indication, and the state transition indication is used to instruct the relay device to enter the third state. Therefore, the network device can instruct the relay device to switch from the first state to the third state according to the network load, so that the power consumption of the relay device can be saved.

In yet another implementation, the relay device is in the third state, and the method further includes: the network device sends a first paging message to the relay device; and the network device receives The RRC recovery request message of the relay device; and the sending of the state transition instruction by the network device to the relay device includes: the network device sends an RRC recovery response message to the relay device, the RRC recovery response message The state transition instruction is included, and the state transition instruction is used to instruct the relay device to enter the first state. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the first state according to the network load condition to meet service requirements.

In another implementation, the relay device is in the third state, and the network device sending the state transition instruction to the relay device includes: the network device sending a second state to the relay device A paging message, the second paging message includes the state transition indication, and the state transition indication is used to instruct the relay device to enter the first state. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the first state according to the network load condition to meet service requirements.

In another implementation, the relay device is in the second state, and the network device sending the state transition instruction to the relay device includes: the network device sending a third state to the relay device A paging message, the third paging message includes the state transition indication, and the state transition indication is used to instruct the relay device to enter the third state. Therefore, when the relay device is in the second state, the network device can control the relay device to switch to the third state, so as to save power consumption of the relay device.

In another implementation, the relay device is in the third state, and the network device sending the state transition instruction to the relay device includes: the network device sending a fourth state to the relay device A paging message, where the fourth paging message includes the state transition indication, and the state transition indication is used to indicate that the relay device enters the second state. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the second state according to the network load condition to meet service requirements. In another implementation, before the relay device enters the third state, the relay device is in the first state, and the method further includes: the network device sends configuration information to the relay device, and the configuration The information includes one or more of the following information: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located. Therefore, when the relay device receives the configuration information, it can perform one or more of the following operations based on the configuration information: monitor random access channels, broadcast synchronization signals, broadcast system information, that is, ensure that the relay device enters the second state The normal business needs of the time.

In yet another implementation, the method further includes: the network device receives state information from the relay device of the relay device or at least one neighbor node of the relay device; and the network device generates a state The transition instruction includes: the network device generates the state transition instruction according to at least one item of state information in the relay device and at least one neighbor node of the relay device. Therefore, the network equipment can accurately decide the state transition of the relay device according to the network load situation.

In a second aspect, a state transition method of a relay device is provided, the method includes: the relay device receives a state transition instruction from a network device, and the state transition instruction is used to instruct the relay device to perform the first A transition between a three-state and a first state, or a third state and a second state, wherein the relay device includes RN-B and RN-U, and the first state includes that the RN-B is in an on state And the RN-U is in the RRC connected state, the second state includes that the RN-B is in the half-on state and the RN-U is in the RRC inactive state, and the third state includes that the RN-B is in the RRC inactive state. The off state and the RN-U is in the RRC inactive state; and the relay device performs state transition according to the state transition instruction. Therefore, the relay device can flexibly switch between different energy consumption states according to the state transition instructions of the network equipment, and save the energy consumption of the relay device as much as possible while meeting service requirements. In one implementation, the relay device is in the first state, and the relay device receives a state transition indication from a network device, including: the relay device receives an RRC message from the network device, and The RRC message includes the state transition instruction, the state transition instruction is used to instruct the relay device to enter the third state; and the relay device performs state transition according to the state transition instruction, including: The relay device enters the third state according to the first state transition instruction. Therefore, the relay device can switch from the first state to the third state according to the instruction of the network device, so that the power consumption of the relay device can be saved.

In yet another implementation, the relay device is in the third state, and the method further includes: the relay device receives a first paging message from the network device; and the relay device sends the The network device sends an RRC recovery request message; the relay device receiving a state transition indication from the network device includes: the relay device receives an RRC recovery response message from the network device, and the RRC recovery response message includes The state transition instruction, the state transition instruction is used to instruct the relay device to enter the first state; and the relay device performs state transition according to the state transition instruction, including: the relay device according to The RRC recovery response message enters the first state. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the first state according to the network load condition to meet service requirements.

In another implementation, the relay device is in the third state, and the method further includes: the relay device receives a second paging message from the network device, and the second paging message includes The state transition instruction, the state transition instruction is used to instruct the relay device to enter the first state; and the relay device performs state transition according to the state transition instruction, including: the relay device according to The second paging message enters the first state. Therefore, when the relay device is in the third state, the network device controls the relay device to switch to the first state according to the network load condition to meet service requirements, and the relay device can switch to the first state according to the instructions of the network device to meet the requirements. Business needs.

In yet another implementation, the relay device is in the second state, and the relay device receives a state transition indication from the network device, including: the relay device receives a third state transition instruction from the network device. A paging message, the third paging message includes the state transition instruction, the state transition instruction is used to instruct the relay device to enter the third state; and the relay device according to the state transition instruction Performing the state transition includes: the relay device enters the third state according to the third paging message. Therefore, when the relay device is in the second state, the relay device can switch to the third state according to the instruction of the network device, so as to save the power consumption of the relay device.

In yet another implementation, the relay device is in the third state, and the relay device receives a state transition instruction from the network device, including: the relay device receives a fourth state from the network device A paging message, the fourth paging message includes the state transition instruction, the state transition instruction is used to instruct the relay device to enter the second state; and the relay device according to the state transition instruction Performing the state transition includes: the relay device enters the second state according to the fourth paging message. Therefore, when the relay device is in the third state, and the network device needs to control the relay device to switch to the second state according to the network load situation, the relay device can switch to the second state according to the instruction of the network device to meet service requirements. In yet another implementation, before the relay device enters the third state, the relay device is in the first state, and the method further includes: the relay device receives configuration information sent by the network device, and The configuration information includes one or more of the following information: the identity of the cell to be activated, cell system information, time-frequency resource information where the cell synchronization signal block is located; and after the relay device enters the second state, the medium The relay device performs one or more of the following operations according to the configuration information: monitoring a random access channel, broadcasting a synchronization signal, and broadcasting system information. Therefore, when the relay device receives the configuration information, it can perform one or more of the following operations based on the configuration information: monitor random access channels, broadcast synchronization signals, broadcast system information, that is, ensure that the relay device enters the second state The normal business needs of the time.

In yet another implementation, the method further includes: the relay device sending state information of the relay device to the network device.

In a third aspect, a network device is provided for executing the foregoing first aspect or any possible implementation method of the first aspect. The network device may be a network device in the foregoing first aspect or any possible implementation of the first aspect, or a module applied to the network device, such as a chip or a chip system. Wherein, the network device includes a module, unit, or means corresponding to the foregoing method, and the module, unit, or means can be implemented by hardware, software, or hardware execution of corresponding software. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

With reference to the above third aspect, in a possible implementation, the network device includes: a transceiver unit and a processing unit; the processing unit is configured to generate a state transition instruction, and the state transition instruction is used to instruct the relay device to perform the first A transition between the three states and the first state, or the third state and the second state, wherein the relay device includes RN-B and RN-U, and the first state includes that the RN-B is in The RN-U is in the on state and the RN-U is in the RRC connected state, the second state includes that the RN-B is in the half-on state and the RN-U is in the RRC inactive state, and the third state includes the RN-U. B is in the off state and the RN-U is in the RRC inactive state; and the transceiver unit is configured to send the state transition indication.

Optionally, the relay device is in the first state, and the transceiving unit is configured to send an RRC message to the relay device, where the RRC message includes the state transition instruction, and the state transition instruction uses To instruct the relay device to enter the third state.

Optionally, the relay device is in the third state, the transceiving unit is configured to send a first paging message to the relay device; the transceiving unit is further configured to receive data from the relay The RRC recovery request message of the device; and the transceiver unit is further configured to send an RRC recovery response message to the relay device, the RRC recovery response message includes the state transition indication, and the state transition indication is used to indicate all The relay device enters the first state.

Optionally, the relay device is in the third state, the transceiving unit is configured to send a second paging message to the relay device, and the second paging information includes the state transition indication, The state transition indication is used to indicate that the relay device enters the first state.

Optionally, the relay device is in the second state, and the transceiving unit is configured to send a third paging message to the relay device, where the third paging message includes the state transition indication, The state transition indication is used to indicate that the relay device enters the third state.

Optionally, the relay device is in the third state, and the transceiving unit is configured to send a fourth paging message to the relay device, where the fourth paging message includes the state transition indication, The state transition indication is used to indicate that the relay device enters the second state.

Optionally, before the relay device enters the third state, the relay device is in the first state, and the transceiving unit is further configured to send configuration information to the relay device, and the configuration information includes the following information One or more of: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located.

Optionally, the transceiving unit is further configured to receive state information from the relay device of the relay device or neighbor nodes of the relay device; and the processing unit is configured to Generating the state transition indication by the state information of at least one of the relay device and the neighbor nodes of the relay device.

In a fourth aspect, a network device is provided. The network device may be a network device in the foregoing first aspect or any possible implementation of the first aspect, or a module applied to the network device, such as a chip or a chip system. Wherein, the network device includes an input interface, an output interface, and a processing circuit; the processing circuit is used to generate a state transition instruction, and the state transition instruction is used to instruct the relay device to perform the third state and the first state, or the Transition between the third state and the second state, wherein the relay device includes RN-B and RN-U, and the first state includes that the RN-B is in the on state and the RN-U is in the RRC Connected state, the second state includes that the RN-B is in the half-on state and the RN-U is in the RRC inactive state, and the third state includes that the RN-B is in the off state and the RN-U In the RRC inactive state; and an output interface for outputting the state transition indication.

Optionally, the output interface is configured to output an RRC message to the relay device when the relay device is in the first state, where the RRC message includes the state transition instruction, and the state transition instruction is used for To instruct the relay device to enter the third state.

Optionally, the output interface is used to output the first paging message to the relay device when the relay device is in the third state; the input interface is also used to input data from the relay device The RRC recovery request message of the device; and the output interface is also used to output an RRC recovery response message to the relay device, the RRC recovery response message includes the state transition indication, and the state transition indication is used to indicate all The relay device enters the first state.

Optionally, the output interface is configured to output a second paging message to the relay device when the relay device is in the third state, and the second paging information includes the state transition indication, The state transition indication is used to indicate that the relay device enters the first state.

Optionally, the output interface is configured to output a third paging message to the relay device when the relay device is in the second state, and the third paging message includes the state transition indication, The state transition indication is used to indicate that the relay device enters the third state.

Optionally, the output interface is configured to output a fourth paging message to the relay device when the relay device is in the third state, where the fourth paging message includes the state transition indication, The state transition indication is used to indicate that the relay device enters the second state.

Optionally, the output interface is also used for outputting configuration information to the relay device when the relay device is in the first state before the relay device enters the third state, and the configuration information includes the following information One or more of: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located.

Optionally, the input interface is also used to input state information from the relay device of the relay device or at least one neighbor node of the relay device; and the processing circuit is used to At least one item of state information in the relay device and at least one neighbor node of the relay device generates the state transition indication.

In a fifth aspect, a network device is provided. The network device may be a network device in the foregoing first aspect or any possible implementation of the first aspect, or a module applied to the network device, such as a chip or a chip system. Wherein, the network device includes at least one processor, configured to execute the foregoing first aspect or any possible implementation method of the first aspect.

Exemplarily, the network device further includes a memory coupled to the at least one processor, and the at least one processor is configured to execute the foregoing first aspect or any possible implementation method of the first aspect.

In a possible implementation, the memory is used to store program instructions and data. The memory is coupled with the at least one processor, and the at least one processor can call and execute the program instructions stored in the memory for executing the foregoing first aspect or any possible implementation method of the first aspect.

Exemplarily, the network device further includes a communication interface, and the communication interface is used for the network device to communicate with other devices. When the network device is a network device, the communication interface is a transceiver, an input/output interface, or a circuit.

In a possible design, the network device includes: at least one processor and a communication interface, configured to execute the foregoing first aspect or any possible implementation method of the first aspect, specifically including: the at least one processing The device uses the communication interface to communicate with the outside; the at least one processor is used to run a computer program, so that the network device executes the foregoing first aspect or any possible implementation method of the first aspect. It can be understood that the exterior may be an object other than the processor, or an object other than the network device.

In another possible design, the network device is a chip or a chip system. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system. The processor can also be embodied as a processing circuit or a logic circuit.

In a sixth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a network device, the network device can execute the first aspect or any one of the possible implementations of the first aspect. method.

In a seventh aspect, a computer program product containing instructions is provided, which when executed by a computer causes a network device to execute the foregoing first aspect or any possible implementation method of the first aspect.

Among them, the technical effects brought about by any one of the design methods of the third aspect to the seventh aspect can be referred to the technical effects brought about by the different design methods in the above-mentioned first aspect, which will not be repeated here.

In an eighth aspect, a relay device is provided for executing the foregoing second aspect or any possible implementation method of the second aspect. The relay device may be a relay device in the foregoing second aspect or any possible implementation of the second aspect, or a module applied to the relay device, such as a chip or a chip system. Wherein, the relay device includes a module, unit, or means corresponding to the foregoing method, and the module, unit, or means can be realized by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

With reference to the above eighth aspect, in a possible implementation, the relay device includes: a transceiving unit and a processing unit; the transceiving unit is configured to receive a state transition instruction from a network device, and the state transition instruction is used to indicate all The relay device performs a transition between a third state and a first state, or a third state and a second state, wherein the relay device includes RN-B and RN-U, and the first state includes the RN -B is in the on state and the RN-U is in the RRC connected state, the second state includes that the RN-B is in the half-on state and the RN-U is in the RRC inactive state, and the third state includes all The RN-B is in the off state and the RN-U is in the RRC inactive state; and the processing unit is configured to perform state transition according to the state transition instruction.

Optionally, the relay device is in the first state, and the transceiving unit is configured to receive an RRC message from the network device, where the RRC message includes the state transition instruction, and the state transition instruction is used for Instructing the relay device to enter the third state; and the processing unit is configured to enter the third state according to a first state transition instruction.

Optionally, the relay device is in the third state; the transceiving unit is further configured to receive a first paging message from the network device; the transceiving unit is further configured to send a message to the network device Sending an RRC recovery request message; the transceiving unit is further configured to receive an RRC recovery response message from the network device, the RRC recovery response message includes the state transition indication, and the state transition indication is used to indicate the middle The subsequent device enters the first state; and the processing unit is configured to enter the first state according to the RRC recovery response message.

Optionally, the relay device is in the third state; the transceiving unit is configured to receive a second paging message from the network device, and the second paging information includes the state transition indication, The state transition indication is used to instruct the relay device to enter the first state; and the processing unit is used to enter the first state according to the second paging message.

Optionally, the relay device is in the second state; the transceiving unit is configured to receive a third paging message from the network device, where the third paging message includes the state transition indication, The state transition indication is used to instruct the relay device to enter the third state; and the processing unit is used to enter the third state according to the third paging message.

Optionally, the relay device is in the third state; the transceiving unit is configured to receive a fourth paging message from the network device, where the fourth paging message includes the state transition indication, The state transition indication is used to instruct the relay device to enter the second state; and the processing unit is used to enter the second state according to the fourth paging message.

Optionally, before the relay device enters the third state, the relay device is in the first state; the transceiver unit is configured to receive configuration information from the network device, and the configuration information includes the following information One or more of: the identity of the cell to be activated, the cell system information, the time-frequency resource information where the cell synchronization signal block is located; and the processing unit is configured to enter the second state and perform the following according to the configuration information One or more of operations: monitoring random access channels, broadcasting synchronization signals, broadcasting system information.

Optionally, the transceiver unit is configured to send the state information of the relay device to the network device.

In a ninth aspect, a relay device is provided. The relay device may be a relay device in the foregoing second aspect or any possible implementation of the second aspect, or a module applied to the relay device, such as a chip Or chip system. Wherein, the relay device includes: an input interface, an output interface, and a processing circuit; the input interface is used to receive a state transition instruction from a network device, and the state transition instruction is used to instruct the relay device to perform the third state and the second state. A state, or a transition between a third state and a second state, wherein the relay device includes RN-B and RN-U, and the first state includes that the RN-B is in the on state and the RN -U is in the RRC connected state, the second state includes that the RN-B is in the half-on state and the RN-U is in the RRC inactive state, and the third state includes that the RN-B is in the off state and all The RN-U is in the RRC inactive state; and the processing circuit is configured to perform state transition according to the state transition instruction.

Optionally, the input interface is used for the relay device in the first state and receiving a first state transition instruction from the network device, where the first state transition instruction includes the state transition instruction, and The state transition instruction is used to instruct the relay device to enter the third state; and the processing circuit is used to enter the third state according to the first state transition instruction.

Optionally, the input interface is also used for the relay device being in the third state and receiving a first paging message from the network device; the output interface is also used for outputting to the network device RRC recovery request message; the input interface is also used to receive an RRC recovery response message from the network device, the RRC recovery response message includes the state transition indication, and the state transition indication is used to instruct the relay device Entering the first state; and the processing circuit is configured to enter the first state according to the RRC recovery response message. Optionally, the input interface is used for the relay device being in the third state and receiving a second paging message from the network device, the second paging information includes the state transition indication, and The state transition indication is used to instruct the relay device to enter the first state; and the processing circuit is used to enter the first state according to the second paging message.

Optionally, the input interface is used for the relay device being in the second state and receiving a third paging message from the network device, where the third paging message includes the state transition indication, and The state transition indication is used to indicate that the relay device enters the third state; and the processing circuit is used to enter the third state according to the third paging message.

Optionally, the input interface is used for the relay device being in the third state and receiving a fourth paging message from the network device, where the fourth paging message includes the state transition indication, and The state transition indication is used to indicate that the relay device enters the second state; and the processing circuit is used to enter the second state according to the fourth paging message.

Optionally, the input interface is used for before the relay device enters the third state, the relay device is in the first state and receives configuration information output by the network device, the configuration information includes the following information One or more of: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located; and the processing circuit is configured to perform the following according to the configuration information after entering the second state One or more of operations: monitoring random access channels, broadcasting synchronization signals, broadcasting system information.

Optionally, the output interface is used to output the status information of the relay device to the network device.

In a tenth aspect, a relay device is provided. The relay device may be a relay device in the foregoing second aspect or any possible implementation of the second aspect, or a module applied to the relay device, such as a chip or Chip system. Wherein, the relay device includes at least one processor, configured to execute the foregoing second aspect or any possible implementation method of the second aspect.

Exemplarily, the relay device further includes a memory coupled with the at least one processor, and the at least one processor is configured to execute the foregoing second aspect or any possible implementation method of the second aspect.

In a possible implementation, the memory is used to store program instructions and data. The memory is coupled with the at least one processor, and the at least one processor can call and execute the program instructions stored in the memory for executing the foregoing second aspect or any possible implementation method of the second aspect.

Exemplarily, the relay device further includes a communication interface, and the communication interface is used for the relay device to communicate with other devices. When the relay device is a relay device, the communication interface is a transceiver, an input/output interface, or a circuit.

In a possible design, the relay device includes: at least one processor and a communication interface, configured to execute the second aspect or any possible implementation method of the second aspect, specifically including: the at least one The processor uses the communication interface to communicate with the outside; the at least one processor is used to run a computer program, so that the relay device executes the foregoing second aspect or any possible implementation method of the second aspect. It can be understood that the exterior may be an object other than the processor, or an object other than the relay device.

In another possible design, the relay device is a chip or a chip system. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system. The processor can also be embodied as a processing circuit or a logic circuit.

In an eleventh aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a relay device, the relay device executes the second aspect or any one of the possible aspects of the second aspect. Method in implementation.

In a twelfth aspect, a computer program product containing instructions is provided, which when executed by a computer causes a relay device to execute the foregoing second aspect or any possible implementation method of the second aspect.

Among them, the technical effects brought by any one of the design methods of the eighth aspect to the twelfth aspect can be referred to the technical effects brought about by the different design methods in the second aspect, which will not be repeated here.

In a thirteenth aspect, a communication system is provided. The communication system includes a network device for implementing the method described in any one of the first aspect or the first aspect, and a network device for implementing the second aspect or the second aspect. Any one of the aspects implements the relay device of the method.

Description of the drawings

Figure 1 is a schematic diagram of a multi-level architecture;

FIG. 2 is a schematic diagram of the architecture of a communication system to which an embodiment of this application is applicable;

FIG. 3 is a schematic diagram of the internal structure and interfaces of the multi-level architecture shown in FIG. 1;

Figure 4 is a schematic diagram of the control plane protocol stack of the logical Uu interface between RN2-U and DN under a multi-level architecture;

Figure 5 is a schematic diagram of the control plane protocol stack of the logical F1 interface between RN2-B and DN under a multi-level architecture;

FIG. 6 is a schematic flowchart of a state transition method of a relay device according to an embodiment of the application;

FIG. 7 is a schematic diagram of the transition between various states of the relay device;

FIG. 8 is a schematic flowchart of another method for state transition of a relay device according to an embodiment of the application; FIG.

FIG. 9 is a schematic diagram of another flow chart of the state transition method of a relay device according to an embodiment of the application;

FIG. 10 is a schematic diagram of another flow chart of the state transition method of a relay device according to an embodiment of the application;

FIG. 11 is a schematic flowchart of another method for state transition of a relay device according to an embodiment of the application; FIG.

FIG. 12 is a schematic diagram of another flow of the state transition method of a relay device provided by an embodiment of the application; FIG.

FIG. 13 is a schematic structural diagram of a relay device/network device provided by an embodiment of the application;

FIG. 14 is a schematic diagram of another structure of a network device provided by an embodiment of this application;

FIG. 15 is a schematic diagram of another structure of a relay device provided by an embodiment of this application.

Detailed ways

The solution of the present application will be described below in conjunction with the drawings of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: enhanced long term evolution (eLTE) communication system, fifth generation (5G) system or new radio (NR), or next generation communication system, such as 6G, etc., in this application The 5G mobile communication systems involved include non-standalone (NSA) 5G mobile communication systems or standalone (SA) 5G mobile communication systems. The communication system can also be a public land mobile network (PLMN), a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, and the Internet of Things (Internet of Things). of things, IoT), car networking communication system or other communication systems.

In the multi-level architecture communication system shown in FIG. 1, usually the DN is also referred to as a donor base station (donor next generation node B, DgNB) in this application. Base stations include but are not limited to: evolved node B (evolved node base, eNB), radio network controller (RNC), node B (node B, NB), base station controller (base station controller, BSC), Base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home node B, HNB), baseband unit (BBU), enhanced long-term evolution (evolved LTE, eLTE) base station, NR Base station (next generation node B, gNB), etc.

User equipment can refer to access terminal, user unit, user station, mobile station, mobile station, relay station, remote station, remote user equipment, mobile equipment, user terminal, user equipment, terminal, wireless communication equipment , User agents, user devices, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, user equipment in the future 5G network or user equipment in the future evolved PLMN or user equipment in the future Internet of Vehicles Etc., the embodiment of the present application does not limit this.

As an example and not a limitation, in the embodiments of the present application, the user equipment may be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a virtual reality user equipment, an augmented reality user equipment, a wireless user equipment in industrial control, and unmanned driving. Wireless user equipment in the Internet, wireless user equipment in remote surgery, wireless user equipment in smart grids, wireless user equipment in transportation safety, wireless user equipment in smart cities, and wireless user equipment in smart homes.

As an example and not a limitation, in the embodiments of the present application, wearable devices can also be referred to as wearable smart devices. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, Gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

In addition, in the embodiments of this application, the user equipment may also be the user equipment in the Internet of Things (IoT) system. The IoT is an important part of the development of information technology in the future, and its main technical feature is to pass items through communication technology Connect with the network to realize the intelligent network of human-machine interconnection and interconnection of things. In the embodiment of the present application, the IOT technology can achieve massive connections, deep coverage, and power saving for user equipment through, for example, narrowband (narrowband, NB) technology.

In addition, in the embodiments of the present application, user equipment may also include sensors such as smart printers, train detectors, gas stations, etc. The main functions include collecting data (part of user equipment), receiving control information and downlink data from access network equipment, and Send electromagnetic waves to transmit uplink data to the access network equipment.

The RN is a specific name of the relay node, and does not limit the solution of the embodiment of the present application. It may be one of the above-mentioned base stations or user equipment with a forwarding function, or may be an independent device form. It should be understood that the use of RN in this application is only for the purpose of description, and does not mean that the solution of this application is only used in NR scenarios. In this application, RN can generally refer to any node or device with a relay function. The use of RN and relay node in should be understood to have the same meaning.

As shown in FIG. 2, it is a schematic diagram of the architecture of a communication system to which the embodiment of this application is applicable. The communication system 100 includes RN200 and DN300, and both RN200 and DN300 are radio access network equipment. The DN300 is directly connected to the core network; the RN200 is not directly connected to the core network, but is wirelessly connected to the DN300 through one or more hops, and then the DN300 is transmitted back to the core network. The RN200 can provide access services for UEs and can also provide relay services for other RNs.

Fig. 3 is a schematic diagram of the internal structure and interface of the multi-level architecture shown in Fig. 1. The RN is composed of two parts, RN-U and RN-B. The function of RN-U is to establish an air interface connection with the upstream node as a user equipment, and to transmit data and control signaling on the air interface; the function of RN-B is to establish an air interface connection as a base station with downstream nodes and UEs, and to establish an air interface connection on the air interface. Perform data and control signaling transmission.

Among them, between DN and RN1-U, between RN1-B and RN2-U, and between RN2-B and UE, all are connected through a physical interface (air interface Uu). For example, the RRC protocol stack of RN1-U can be connected to the RRC protocol stack of DN through the air interface Uu, and the packet data convergence protocol (PDCP) protocol stack of RN1-U can be connected to the PDCP protocol stack of DN through the air interface Uu. Connected, the radio link control (RLC) protocol stack of RN1-U can be connected with the RLC protocol stack of DN through the air interface Uu, and the media access control (MAC) protocol stack of RN1-U It can be connected with the MAC protocol stack of DN through the air interface Uu.

RN1-U and RN1-B, RN2-U and RN2-B are all connected through internal interfaces.

DN and RN-U and RN-B that are not directly connected are connected through a logical interface. The logic interface includes two kinds of logic Uu interface and logic F1 interface. For example, the connection between DN and RN2-U is through the logical Uu port. Specifically, as shown in Figure 4, it is a schematic diagram of the control plane protocol stack of the logical Uu interface between RN2-U and DN under the multi-level architecture. The RRC protocol stack of RN2-U can be compared with the RRC protocol stack of DN through logical Uu. Connection, and the PDCP protocol stack of RN2-U can be connected with the PDCP protocol stack of DN through logical Uu.

For example, DN and RN2-B are connected through a logical F1 interface. Specifically, as shown in Figure 5, it is a schematic diagram of the control plane protocol stack of the logical F1 interface between RN2-B and DN under the multi-level architecture. The F1 application protocol (F1AP) protocol stack of RN2-B and the DN The F1AP protocol stack can be connected through the F1 interface; the stream control transmission protocol (SCTP) protocol stack of RN2-B and the SCTP protocol stack of DN can be connected through the F1 interface; and the network interconnection protocol of RN2-B ( The internet protocol (IP) protocol stack and the IP protocol stack of the DN can be connected through an F1 interface.

For example, DN and RN1-B are also connected through a logical F1 interface. Specifically, the F1AP protocol stack of RN1-B and the F1AP protocol stack of DN can be connected through the F1 interface; the SCTP protocol stack of RN1-B and the SCTP protocol stack of DN can be connected through the F1 interface; and the IP protocol of RN1-B The IP protocol stack of the stack and the DN can be connected through the F1 interface.

The above-mentioned first state and the second state can be interchanged. The transition from the first state to the second state may be initiated by the network side. The transition from the second state to the first state can be initiated by the network side or the UE side. Exemplarily, when the load of the RN is small, etc., the DN may instruct the RN to transition from the first state to the second state. When receiving the user paging message sent by the DN, or when receiving the random access initiated by the UE, the RN may transition from the second state to the first state.

Faced with the problem that there are only two states, the first state and the second state, and when the RN is in the second state, the RN-B is in the half-on state and still needs to consume energy. The embodiment of the present application provides a state transition of the RN In the method and device, the third state is proposed, and the DN can control the RN to switch between multiple different states flexibly, so as to save the energy consumption of the RN as much as possible while meeting service requirements.

The following describes in detail the state transition scheme of the RN of the present application in conjunction with FIG. 6 to FIG. 12:

As shown in FIG. 6, it is a schematic flow chart of the RN state transition method provided by this embodiment of the application. The method may include the following steps:

S101. The DN generates a state transition indication, which is used to instruct the RN to perform a transition between the third state and the first state, or between the third state and the second state, where the first state includes that the RN-B is in the on state And the RN-U is in the RRC connected state, the second state includes the RN-B in the half-on state and the RN-U in the RRC inactive state, and the third state includes the RN-B in the off state and the RN-U in the RRC inactive state.

RN can be any node with relay function.

This embodiment proposes the third state. The third state is also called the deep energy-saving state. in:

·RN-B is closed and does not provide any communication services. It should be noted that the closed state can be when RN-B stops sending and receiving wireless signals, or when RN-B is powered off.

· The RN-U is in the RRC inactive state and performs the RRC inactive state function of the RN-U.

It can be seen that compared with the second state, the state of RN-U is the same in the third state, and the state of RN-B changes from a half-open state to a closed state. Compared with the second state, the energy consumption of the RN in the third state is lower. Therefore, the second state is a shallow energy-saving state, and the third state is a deep energy-saving state.

When the RN is in the third state, the RN-U therein is in the RRC inactive state, so that the RN can receive such as paging messages and switch to other states.

The characteristics of the three states are shown in Table 1 below:

Table 1 RN status types

The previous embodiments have described that the first state can perform state transitions with the second state. This embodiment mainly describes the transition between the third state and the first state, or between the third state and the second state. As shown in FIG. 7, a schematic diagram of the transition of the three states of the RN, the first state, the second state, and the third state can be interchanged. In this embodiment, the DN controls the state transition of the RN.

The DN may instruct the RN to switch to the first state or the second state according to the service requirements to meet the service requirements, or may instruct the RN to switch to the third state according to the status of the RN and surrounding nodes, so as to save the power consumption of the RN.

Exemplarily, when the RN has no terminal equipment access for a long time, the RN-B detects excessive interference, or the load of the upstream node of the RN is too high, the DN may generate a state transition indication for the RN to change from the first state Or transition from the second state to the third state.

Exemplarily, when the core network pages a terminal device and the RN-B is in the paging area of the terminal device, or the load of the neighboring base station of the RN is too high, the DN may generate a state transition indication, and the state transition indication is used to indicate The RN transitions from the third state to the first state or the second state.

That is, the content of the state transition instruction may include: an instruction for instructing the RN to transition from the first state or the second state to the third state, or an instruction for instructing the RN to transition from the third state to the first state or the second state The indication of is either an indication used to indicate the transition of the RN from the first state to the second state, or an indication used to indicate the transition of the RN from the second state to the first state.

S102. The DN sends the state transition indication to the RN.

Correspondingly, the RN receives the state transition indication.

After the DN generates the state transition instruction, it can select the corresponding method to send the state transition instruction to the RN according to the current state of the RN.

For example, the RN is currently in the first state, and the state transition indication is used to instruct the RN to transition from the first state to the third state. When the RN is in the first state, the RN-U is in the RRC connected state and the RN-B is in the on state, so the DN can carry the state transition indication through the RRC message.

For another example, the RN is currently in the third state, and the state transition indication is used to instruct the RN to transition from the third state to the first state. Because when the RN is in the third state, RN-U is in the RRC inactive state and RN-B is in the off state, the DN can send a paging message to the RN and carry the state transition indication in the paging message.

For another example, the RN is currently in the third state, and the state transition indication is used to instruct the RN to transition from the third state to the second state. Because when the RN is in the third state, RN-U is in the RRC inactive state and RN-B is in the off state, the DN can send a paging message to the RN and carry the state transition indication in the paging message.

For another example, the RN is currently in the second state, and the state transition indication is used to instruct the RN to transition from the second state to the third state. When the RN is in the second state, the RN-U is in the RRC inactive state, and the RN-B is in the half-on state, the DN can send a paging message to the RN and carry the state transition indication in the paging message.

S103. The RN performs state transition according to the state transition instruction.

After receiving the state transition instruction sent by the DN, the RN performs state transition according to the content of the state transition instruction. For example, the state transition indication is used to indicate that the RN transitions from the first state to the third state, and the RN transitions from the first state to the third state. For another example, the state transition indication is used to indicate that the RN transitions from the third state to the second state, and the RN transitions from the third state to the second state.

According to an RN state transition method provided by an embodiment of the present application, the DN can control the RN to flexibly transition between multiple different energy consumption states, and save the energy consumption of the RN as much as possible while meeting service requirements.

The following describes the state transition process of the above RN:

As shown in FIG. 8, another schematic flowchart of the RN state transition method provided by the embodiment of this application. This embodiment exemplarily describes the process in which the DN instructs the RN2 to transition from the first state to the third state. The method can include the following steps:

S201. RN2 is currently in the first state, and RN2-B sends RN2 status information to DN through RN1.

The neighboring nodes of RN2 can also send status information to the DN.

Correspondingly, the DN receives the status information of the neighboring nodes of RN2 and RN1.

This step is optional.

Specifically, RN2 is currently in the first state, that is, RN2-B is in the on state, and RN2-U is in the RRC connected state. RN2-B reports status information to the DN. The status information may include load information and interference information. The load information is, for example, the load of each cell of RN2-B or the average load of each cell; the interference information is, for example, the interference power value detected by RN2-B. The neighboring nodes of RN2 can also send status information to the DN. The load information is, for example, the load of each cell of RN2 or the average load of each cell; the interference information is, for example, the interference power value detected by the neighboring nodes of RN2.

RN2-B reports status information to DN, where DN and RN2-B are connected through a logical F1 interface, that is, F1AP messages can be transferred between DN and RN2-B, and the F1AP messages are forwarded by RN2-U and RN1. Specifically, RN2-B forwards the status information to RN2-U through the internal interface, and RN2-U forwards the status information to RN1-B through the Uu interface. RN1-B forwards the status information to RN1-U through the internal interface. RN1-U reports the status information to the DN through the Uu port.

S202: The DN generates a state transition indication.

Specifically, the DN makes a decision on whether RN2 transitions from the first state to the third state according to the state information of RN2-B. For example, if the load of RN2-B is small for a long time and no terminal equipment is connected, or RN2 detects that the interference is large for a long time, DN2 can generate a state transition indication, which is used to instruct RN2 to transition from the first state For the third state. Optionally, when the DN makes a state transition decision on RN2, it is also based on other related information (for example, state information of neighboring nodes of RN2).

S203. The DN sends an RRC message to the RN2-U through the RN1, where the RRC message includes the state transition indication.

Since RN2 is currently in the first state, the DN can send an RRC message, such as an RRC release (RRCRelease) message, to RN2-U. Specifically, an information element (information element, IE) can be added to the RRCRelease message, and the IE is used to indicate whether RN2 transitions to the third state. For example, the Transfer to State 3 indication information element shown in Table 2 below is added to the RRCRelease message:

Table 2

When the cell exists in the RRCRelease message and its value is "True", it indicates that RN2 is instructed to transition to the third state. When the cell does not exist in the RRCRelease message, it indicates that RN2 is instructed to maintain the original state.

Among them, DN sends an RRC message to RN2-U through RN1. Specifically, DN and RN2-U are connected through a logical Uu port, that is, DN forwards the RRC message to RN1-U through Uu port; RN1-U passes through RN1 The internal interface forwards the RRC message to RN1-B or sends an indication message to instruct RN1-B to regenerate the RRC message; RN1-B forwards the RRC message to RN2-U through the Uu interface.

For another example, the State Transfer Indication information element shown in the following Table 3 can be added to the RRCRelease message:

table 3

When the cell exists in the RRCRelease message and its value is "toState1", it indicates that the node is instructed to transition to the first state; when its value is "toState2", it indicates that the node is instructed to transition to the second state; its value is "toState3" When it indicates that the node is instructed to transition to the third state. When the cell does not exist in the RRCRelease message, it indicates that the node is instructed to maintain the original state. In this embodiment, the information element may take the value "toState3", which indicates that RN2 is instructed to transition to the third state.

S204. RN2 executes the state transition instruction according to the RRC message, and enters the third state.

Specifically, RN2-U enters the RRC inactive state according to the RRC message. And RN2-U sends an internal command to RN2-B, which is used to instruct RN2-B to enter the closed state. Correspondingly, the RN2-B enters the closed state according to the internal instruction, so that RN2 enters the third state.

In another embodiment, the DN may also send the above F1AP message to RN2-B through RN1. Then, RN2-B sends an internal command to RN2-U, which is used to instruct RN2-U to enter the RRC inactive state; and RN2-B enters the off state according to the RRC message or F1AP message, so that RN2 enters the third state .

For example, the DN may send an F1AP message, such as a GNB-DU CONFIGURATION UPDATE message, to RN2-B through RN1. The F1AP message includes the above-mentioned state transition indication. Specifically, an information element can be added to the GNB-DU CONFIGURATION UPDATE message, and the information element is used to indicate whether RN2 transitions to the third state. For example, the Transfer to State 3 indication information element shown in Table 1 is added to the GNB-DU CONFIGURATION UPDATE message. When this cell exists in the GNB-DU CONFIGURATION UPDATE message, and its value is "True", it indicates that RN2 is instructed to transition to the third state. When the cell does not exist in the above message, it indicates that RN2 is instructed to maintain the original state.

It should be noted that the above exemplarily describes the process in which the DN instructs the RN2 to transition from the first state to the third state. The solution of this embodiment can also be applied to the process in which the DN instructs RN1 to transition from the first state to the third state. In this process, since the DN and RN1 are directly connected, the DN can directly send a state transition instruction to RN1 without Transit through other RNs; or assuming that there are other RNs, such as RN3, connect to DN through RN2 and RN1, this method can also be applied to the process in which DN instructs RN3 to transition from the first state to the third state through RN1/RNE2, etc. And so on, DN needs to send state transition instructions to RN3 through RN1 and RN2.

According to an RN state transition method provided by an embodiment of the present application, the DN can instruct the RN to transition from the first state to the third state according to the network load, so that the power consumption of the RN can be saved.

As shown in FIG. 9, it is a schematic flowchart of another RN state transition method provided by an embodiment of this application. This embodiment exemplarily describes the process in which the DN instructs the RN2 to transition from the third state to the first state. The method can include the following steps:

S301. The DN generates a state transition indication.

RN2 is currently in the third state, that is, RN2-B is in the off state, and RN2-U is in the RRC inactive state. At this time, RN2-B cannot communicate with other RNs and DNs.

Before step S301, optionally, it further includes: the neighboring nodes of RN2 can send status information to the DN. The status information may include load information and interference information. The load information is, for example, the load of each cell of the RN-B in the neighboring nodes of RN2 or the average load of each cell; the interference information is, for example, the interference power value detected by the RN-B in the neighboring nodes of RN2.

Specifically, the DN makes a decision on whether RN2 transitions from the third state to the first state according to the state information of the neighboring nodes of RN2, and generates a state transition instruction. Wherein, the state transition indication is used to instruct RN2 to transition from the third state to the first state.

For example, if the load of the neighboring nodes of RN2 is too large, the DN may decide to change the RN2 from the third state to the first state, so as to offload the load of the neighboring nodes of RN2.

S302. The DN sends the first paging message to the RN2-U.

Correspondingly, RN2-U receives the first paging message.

Since RN2 is currently in the third state, RN2-B cannot receive the RRC message of DN, so DN sends the first paging message to RN2-U. The first paging message is used to page RN2-U to wake up RN-U for RRC connection recovery.

Wherein, the DN sends the first paging message to RN2-U through RN1. Specifically, the DN and RN2-U are connected through a logical Uu port, that is, the DN sends the first paging message to RN1-U through the Uu port; RN1-U forwards the first paging message to RN1-B through the internal interface of RN1 or sends an indication message to instruct RN1-B to regenerate the first paging message; RN1-B forwards the first paging message to RN2-U through the Uu interface The first paging message. The format of the first paging message may be the same as the format of the paging message sent by a normal radio access network device to the terminal device, and the item ue-Identity in the first paging message is the identifier of RN2-U.

S303. The RN2-U sends an RRC recovery request message to the DN.

Correspondingly, the DN receives the RRC recovery request message.

After receiving the first paging message of the DN, the RN2-U performs RRC connection recovery, and sends an RRC recovery request (RRCResumeRequest) message to the DN.

Specifically, the DN and RN2-U are connected through a logical Uu port, that is, RRC messages can be transferred between the DN and RN2-U, and the RRC messages are forwarded by RN1. The RN2-U sends the RRC recovery request message to the RN1-B through the Uu port, and the RN1-B forwards the RRC recovery request message to the RN1-U through the internal interface. RN1-U forwards the RRC recovery request message to the DN through the Uu port. Correspondingly, the DN receives the RRC recovery request message sent by the RN2-U.

S304. The DN sends an RRC recovery response message to the RN2-U, where the RRC recovery response message carries the above state transition indication.

Correspondingly, RN2-U receives the RRC recovery response message.

After receiving the RRC recovery request message sent by RN2-U, the DN allows RN2-U to recover the RRC connection. And send an RRC recovery response message to the RN2-U, where the RRC recovery response message is used to indicate the recovery of the RRC connection of the RN2-U. Wherein, the RRC recovery response message carries the above state transition indication, and the state transition indication is used to instruct RN2 to transition from the third state to the first state.

Exemplarily, an IE is added to the RRC recovery response message, and the IE is used to indicate whether RN2 transitions to the first state. For example, the Transfer to State 1 indication cell is added to the RRC recovery response message, as shown in Table 4 below:

Table 4

When the cell exists in the above message and its value is "True", it indicates that RN2 is instructed to transition to the first state. When the cell does not exist in the above message, it indicates that RN2 is instructed to maintain the original state.

For another example, the State Transfer Indication information element shown in Table 2 can be added to the RRC recovery response message. When the cell exists in the RRC recovery response message and its value is "toState1", it indicates that the node is transitioning to the first state; when its value is "toState2", it indicates that the node is transitioning to the second state; its value is " "toState3" indicates that the node is instructed to transition to the third state. When the information element does not exist in the RRC recovery response message, it indicates that the node is instructed to maintain the original state. In this embodiment, the information element may take the value "toState1", which indicates that RN2 is instructed to transition to the first state.

Specifically, the DN and RN2-U are connected through a logical Uu port, that is, RRC messages can be transferred between the DN and RN2-U, and the RRC messages are forwarded by RN1. The DN sends an RRC recovery response message to RN1-U through the Uu port, and RN1-U forwards the RRC recovery response message to RN1-B through the internal interface or sends an indication message to instruct RN1-B to regenerate the RRC recovery response message, RN1- B forwards the RRC recovery response message to RN2-U through the Uu port. Correspondingly, the RN2-U receives the RRC recovery response message sent by the DN.

S305. RN2 performs state transition according to the RRC recovery response message, and enters the first state.

Specifically, the RN2-U enters the RRC connected state according to the RRC recovery response message; and the RN2-U sends an internal command to the RN2-B, and the internal command is used to instruct the RN2-B to enter the on state. RN2-B enters the on state according to the internal command, and thus, RN2 enters the first state.

It should be noted that the above exemplarily describes the process in which the DN instructs the RN2 to transition from the third state to the first state. The solution of this embodiment can also be applied to the process in which the DN instructs RN1 to transition from the third state to the first state. In this process, since the DN and RN1 are directly connected, the DN can directly send a state transition instruction to RN1 without Transit through other RNs; or assuming that there are other RNs, such as RN3, connect to DN through RN2 and RN1, this method can also be applied to the process in which DN instructs RN3 to transition from the third state to the first state through RN1/RN2, etc. And so on, DN needs to send state transition instructions to RN3 through RN1 and RN2.

According to an RN state transition method provided by an embodiment of the present application, when the RN is in the third state, the DN can control the RN to transition to the first state according to the network load condition to meet service requirements.

As shown in FIG. 10, it is a schematic diagram of another flow of the RN state transition method provided by an embodiment of this application. This embodiment exemplarily describes the process in which the DN instructs the RN2 to transition from the third state to the first state. The method can include the following steps:

S401: The DN generates a state transition indication.

Before step S401, optionally, the method further includes: the neighboring nodes of RN2 send status information to the DN.

Correspondingly, the DN receives the status information sent by the neighboring nodes of RN2.

Exemplarily, the DN generates a state transition indication according to the state information of the neighboring nodes of RN2. Wherein, the state transition indication is used to instruct RN2 to transition from the third state to the first state.

For the specific implementation of this step, refer to step S301 of the embodiment shown in FIG. 9.

S402. The DN sends a second paging message to the RN2-U.

Correspondingly, the RN-U receives the second paging message.

Wherein, the second paging message carries the above state transition indication.

The main difference between this embodiment and the embodiment shown in FIG. 9 lies in that, in this embodiment, the above-mentioned state transition indication is carried in the second paging message. The item ue-Identity of the second paging message is the identity of RN2-U.

Exemplarily, an IE is added to the second paging message, and the IE is used to indicate whether RN2 transitions to the first state. For example, the Transfer to State 1 indication cell is added to the second paging message, as shown in Table 3 above. When the cell exists in the above message and its value is "True", it indicates that RN2 is instructed to transition to the first state. When the cell does not exist in the above message, it indicates that RN2 is instructed to maintain the original state.

Specifically, DN and RN2-U are connected through a logical Uu port. The DN sends the second paging message to RN1-U through the Uu port, and RN1-U forwards the second paging message to RN1-B through the internal interface or sends an indication message to instruct RN1-B to regenerate the second paging message RN1-B forwards the second paging message to RN2-U through the Uu port. Correspondingly, RN2-U receives the second paging message sent by DN.

For another example, the State Transer Indication information element shown in Table 2 may be added to the second paging message. When the cell exists in the second paging message and its value is "toState1", it indicates that the node has transitioned to the first state; when its value is "toState2", it indicates that the node has transitioned to the second state; its value is When "toState3", it indicates that the node is instructed to transition to the third state. When the cell does not exist in the RRCRelease message, it indicates that the node is instructed to maintain the original state. In this embodiment, the information element may take the value "toState1", which indicates that RN2 is instructed to transition to the first state.

S403. The RN2-U sends an RRC recovery request message to the DN.

Correspondingly, the DN receives the recovery request message.

For the specific implementation of this step, refer to step S303 of the embodiment shown in FIG. 9.

S404. The DN sends an RRC recovery response message to the RN2-U.

Correspondingly, RN2-U receives the RRC recovery response message.

The main difference from step S304 of the embodiment shown in FIG. 9 is that the RRC recovery response message does not carry the above-mentioned state transition indication, and is only used to indicate the RRC connection recovery.

S405. RN2 performs state transition according to the RRC recovery response message, and enters the first state.

As shown in FIG. 11, it is a schematic diagram of another flow of the RN state transition method provided by the embodiment of this application. This embodiment exemplarily describes the process in which the DN instructs the RN2 to transition from the second state to the third state. The method can include the following steps:

S501: The DN generates a state transition indication.

Currently RN2 is in the second state, that is, RN2-B is in the half-on state, and RN2-U is in the RRC inactive state. RN2-B performs RN2-B half-on functions, such as monitoring PRACH, broadcasting synchronization signals and system information.

The neighboring nodes of RN2 can send status information to the DN. The status information may include load information and interference information. The load information is, for example, the load of each cell of the RN-B in the neighboring nodes of RN2 or the average load of each cell; the interference information is, for example, the interference power value detected by the RN-B in the neighboring nodes of RN2.

In step S501, the DN makes a decision based on the status information of the RN2 and/or the neighboring nodes of the RN2, whether RN2 transitions from the second state to the third state, and generates a state transition instruction. Wherein, the state transition indication is used to instruct RN2 to transition from the second state to the third state.

For example, if the load of the neighboring nodes of RN2 is too small, RN2 does not need to perform offloading, or RN2 has no terminal equipment access for a long time, and the load of RN2 itself is too small, then DN can decide to make RN2 transition from the second state to the third state. In order to save the power consumption of RN2.

S502. The DN sends a third paging message to the RN2-U.

Correspondingly, the RN2-U receives the third paging message.

Wherein, the third paging message carries the above-mentioned state transition indication.

Specifically, an IE is added to the third paging message. This IE is used to indicate whether RN2 transitions to the third state. For example, the Transfer to State 3 indication cell is added to the third paging message, as shown in Table 1 above. When the cell exists in the above message and its value is "True", it indicates that RN2 is instructed to transition to the third state. When the cell does not exist in the above message, it indicates that RN2 is instructed to maintain the original state.

The ue-Identity item of the third paging message is the identity of the RN2-U.

Specifically, DN and RN2-U are connected through a logical Uu port. The DN sends the third paging message to RN1-U through the Uu port, and RN1-U forwards the third paging message to RN1-B through the internal interface or sends an indication message to instruct RN1-B to regenerate the third paging message RN1-B forwards the third paging message to RN2-U through the Uu port. Correspondingly, RN2-U receives the third paging message sent by DN.

For another example, the State Transfer Indication information element shown in Table 2 may be added to the third paging message. When the cell exists in the third paging message and its value is "toState1", it indicates that the node has transitioned to the first state; when its value is "toState2", it indicates that the node has transitioned to the second state; its value is When "toState3", it indicates that the node is instructed to transition to the third state. When the cell does not exist in the third paging message, it indicates that the node is instructed to maintain the original state. In this embodiment, the information element may take the value "toState3", which indicates that RN2 is instructed to transition to the third state.

S503: RN2 enters the third state according to the third paging message.

After RN2 receives the third paging message and finds that the third paging message contains the above-mentioned IE for instructing RN2 to transition to the third state, then RN2-U does not perform the RRC recovery procedure, but keeps it in the RRC inactive state. The RN2-U sends an internal command to the RN2-B, and the internal command is used to instruct the RN2-B to enter the closed state. Correspondingly, the RN2-B enters the closed state according to the internal instruction, so that RN2 enters the third state.

It should be noted that the above exemplarily describes the process in which the DN instructs the RN2 to transition from the second state to the third state. The solution of this embodiment can also be applied to the process in which the DN instructs RN1 to transition from the second state to the third state. In this process, since DN and RN1 are directly connected, the DN can directly send a state transition instruction to RN1 without Transit through other RNs; or assuming that there are other RNs, such as RN3, connect to DN through RN2 and RN1, this method can also be applied to the process in which DN instructs RN3 to transition from the second state to the third state through RN1/RN2, etc. And so on, DN needs to send state transition instructions to RN3 through RN1 and RN2.

According to an RN state transition method provided by an embodiment of the present application, when the RN is in the second state, the DN can control the RN to transition to the third state according to the state of the RN and/or surrounding nodes, so as to save the power consumption of the RN.

As shown in FIG. 12, another schematic flowchart of the RN state transition method provided by the embodiment of this application. This embodiment exemplarily describes the process of transitioning from the third state to the second state. The method can include the following steps:

S601: When RN2 is in the first state, DN sends configuration information to RN2-B.

Correspondingly, the RN-B receives the configuration information.

This step is optional. The configuration information is used to pre-configure RN2-B after RN2 transitions from the third state to the second state. The configuration information includes information about one or more cells to be activated. Wherein, the information of each cell to be activated includes one or more of the following information: cell identity (such as NR physical cell identity (physical cell identity, PCI)), cell system information, cell synchronization signal/physical broadcast channel block ( sychronization singal/physical broadcast channel, SS/PBCH) time-frequency resource information.

Then, RN2 enters the third state through the process of transitioning from the first state to the third state. For the transition process, refer to the description of the foregoing embodiment.

Optionally, when RN2 is in the third state, that is, RN2-B is in the off state, and RN2-U is in the RRC inactive state. The neighboring nodes of RN2 can send status information to the DN. For example, RN1-B can send status information to the DN. The status information may include load information and interference information. The load information is, for example, the load of each cell of RN1-B or the average load of each cell; the interference information is, for example, the interference power value detected by RN1-B.

S602. The DN generates a state transition indication.

The DN receives the state information of the neighboring nodes of RN2, and makes a decision on whether RN2 will transition from the third state to the second state. For example, if the load of the neighboring nodes of RN2 gradually increases, the DN can generate a state transition indication, which is used to instruct RN2 to transition from the third state to the second state, so as to allow the terminal device to initiate a random connection to RN2-B. enter.

S603. The DN sends a fourth paging message to the RN2-U, where the fourth paging message includes a state transition indication.

Correspondingly, the RN2-U receives the fourth paging message.

Specifically, an IE is added to the fourth paging message. This IE is used to indicate whether RN2 transitions to the second state. For example, the Transfer to State 2 indication cell is added to the fourth paging message, as shown in Table 5 below:

table 5

When the cell exists in the above message and its value is "True", it indicates that RN2 is instructed to transition to the second state. When the cell does not exist in the above message, it indicates that RN2 is instructed to maintain the original state.

The item ue-Identity of the fourth paging message is the identity of RN2-U.

Specifically, DN and RN2-U are connected through a logical Uu port. The DN sends the fourth paging message to RN1-U through the Uu port, and RN1-U forwards the fourth paging message to RN1-B through the internal interface or sends an indication message to instruct RN1-B to regenerate the fourth paging message RN1-B forwards the fourth paging message to RN2-U through the Uu port. Correspondingly, RN2-U receives the fourth paging message sent by DN.

For another example, the State Transform Indication information element shown in Table 2 may be added to the fourth paging message. When the cell exists in the fourth paging message and its value is "toState1", it indicates that the node is instructed to transition to the first state; when its value is "toState2", it indicates that the node is instructed to transition to the second state; its value is When "toState3", it indicates that the node is instructed to transition to the third state. When the cell does not exist in the fourth paging message, it indicates that the node is instructed to maintain the original state. In this embodiment, the information element can take the value "toState2", which indicates that RN2 is instructed to transition to the second state.

S604: RN2 enters the second state according to the fourth paging message.

Specifically, the RN2-U keeps the RRC inactive state according to the fourth paging message. And the RN2-U also sends an internal command to the RN2-B, and the internal command is used to instruct the RN2-B to enter the half-open state. The RN2-B enters the half-open state according to the internal instruction, and thus, the RN2 enters the second state.

S605. After RN2 enters the second state, RN2-B performs one or more of the following operations according to the configuration information: monitoring the physical random access channel, broadcasting SS/PBCH, and broadcasting system information.

Specifically, RN2 enters the second state, that is, RN2-B is in a half-on state, and RN2-U is in an RRC inactive state. RN2-B performs one or more of the following operations according to the configuration information: monitoring the physical random access channel, broadcasting SS/PBCH, and broadcasting system information. In a possible implementation manner, in step S601, the DN performs the pre-configuration on the RN2-B after transitioning from the third state to the second state, and then the RN2-B can perform the foregoing operations according to the pre-configured information. In another possible implementation manner, the RN2-B may perform the foregoing operations according to the configuration parameters of the RN2-B when the RN2-B is in the first state and saved by the RN2-B. For example, the RN2-B broadcasts the SS/PBCH at the time-frequency resource location where the SS/PBCH of the cell is located; another example, the RN2-B broadcasts the configured cell system information; and so on.

It should be noted that the above exemplarily describes the process in which the DN instructs the RN2 to transition from the third state to the second state. The solution of this embodiment can also be applied to the process in which the DN instructs RN1 to transition from the third state to the second state. In this process, since DN and RN1 are directly connected, the DN can directly send a state transition instruction to RN1 without Transit through other RNs; or assuming that there are other RNs, such as RN3, connect to DN through RN2 and RN1, this method can also be applied to the process in which DN instructs RN3 to transition from the third state to the second state through RN1/RN2, etc. And so on, DN needs to send state transition instructions to RN3 through RN1 and RN2.

According to an RN state transition method provided by an embodiment of the present application, when the RN is in the third state, the DN can control the RN to transition to the second state according to the network load condition to meet service requirements.

In the embodiment of the present application, the network device or relay device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application. For example, the execution subject of the method provided in the embodiments of the present application may be a network device or a relay device, or a functional module in the network device or a relay device that can call and execute the program.

In other words, the related functions of the network device or the relay device in the embodiments of this application can be implemented by one device, or can be implemented by multiple devices together, or can be implemented by one or more functional modules in one device. The embodiment does not specifically limit this. It is understandable that the above functions can be network elements in hardware devices, software functions running on dedicated hardware, or a combination of hardware and software, or instantiated on a platform (for example, a cloud platform) Virtualization function.

For example, the related functions of the network device or the relay device in the embodiment of the present application may be implemented by the device 1000 in FIG. 13. FIG. 13 is a schematic structural diagram of an apparatus 1000 provided by an embodiment of the application. The device 1000 includes one or more processors (the processor 11 and the processor 17 are exemplified in FIG. 13), a communication line 12, and at least one communication interface (in FIG. 13 only for example, the communication interface 14 is included for example. Note), optionally, the memory 13 may also be included.

The processor 11 may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of this application. Circuit.

The communication line 12 may include a path for connecting different components.

The communication interface 14 may be a transceiver module for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), and so on. For example, the transceiver module may be a device such as a transceiver or a transceiver. Optionally, the communication interface 14 may also be a transceiver circuit located in the processor 11 to implement signal input and signal output of the processor.

The memory 13 may be a device having a storage function. For example, it can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions Dynamic storage devices can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disk storage, optical disc storage ( Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be stored by a computer Any other media taken, but not limited to this. The memory can exist independently and is connected to the processor through the communication line 12. The memory can also be integrated with the processor.

The memory 13 is used to store computer-executed instructions for executing the solution of the present application, and the processor 11 controls the execution. The processor 11 is configured to execute the computer-executable instructions stored in the memory 13, so as to implement the state transition method of the relay device provided in the embodiment of the present application.

Alternatively, in the embodiment of the present application, the processor 11 may also perform processing related functions in the state transition method of the relay device provided in the following embodiments of the present application, and the communication interface 14 is responsible for communicating with other devices or communication networks. The application embodiment does not specifically limit this.

The computer execution instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 11 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 13.

In a specific implementation, as an embodiment, the apparatus 1000 may include multiple processors, such as the processor 11 and the processor 17 in FIG. 13. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

In a specific implementation, as an embodiment, the apparatus 1000 may further include an output device 15 and an input device 16. The output device 15 communicates with the processor 11 and can display information in a variety of ways.

The above-mentioned device 1000 may be a general-purpose device or a special-purpose device. For example, the apparatus 1000 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal, an embedded device, or a device with a similar structure in FIG. 12. The embodiment of the present application does not limit the type of the device 1000.

It should be noted that one or more of the above units or units can be implemented by software, hardware or a combination of both. When any of the above units or units are implemented in software, the software exists in the form of computer program instructions and is stored in the memory, and the processor can be used to execute the program instructions and implement the above method flow. The processor can be built in a system on chip (system on chip, SoC) or ASIC, or it can be an independent semiconductor chip. The processor's internal processing is used to execute software instructions for calculations or processing, and may further include necessary hardware accelerators, such as field programmable gate arrays (FPGA) and programmable logic devices (programmable logic devices). device, PLD), or a logic circuit that implements dedicated logic operations.

When the above units or units are implemented in hardware, the hardware can be a central processing unit (CPU), a microprocessor, a digital signal processing (digital signal processing, DSP) chip, and a microcontroller unit (MCU) ), artificial intelligence processor, ASIC, SoC, FPGA, PLD, dedicated digital circuit, hardware accelerator, or any one or any combination of non-integrated discrete devices, which can run necessary software or do not rely on software to perform the above Method flow.

It can be understood that, in each of the above embodiments, the methods and/or steps implemented by the network equipment can also be implemented by components (such as chips or circuits) that can be used in the network equipment; the methods and/or steps implemented by the relay device It can also be implemented by components (such as chips or circuits) that can be used in relay devices.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. Correspondingly, an embodiment of the present application also provides a device, which is used to implement the above-mentioned various methods. The device may be the network device in the foregoing method embodiment, or a device including the foregoing network device, or a component that can be used in the network device; or, the device may be the relay device in the foregoing method embodiment, or may include the foregoing A device that is a relay device, or a component that can be used as a relay device. It can be understood that, in order to realize the above-mentioned functions, the device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiments of the present application may divide the device into functional modules according to the foregoing method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

FIG. 14 shows a schematic structural diagram of a network device 2000. The network device 2000 includes a transceiver unit 21 and a processing unit 22. The transceiving unit 21 may also be referred to as a transceiving unit to implement a transceiving function, for example, it may be a transceiving circuit, a transceiver, a transceiver or a communication interface.

The processing unit 22 is configured to generate a state transition instruction, and the state transition instruction is used to instruct the relay device to perform a transition between the third state and the first state, or between the third state and the second state, wherein, The relay device includes RN-B and RN-U, the first state includes that the RN-B is in the on state and the RN-U is in the RRC connected state, and the second state includes the RN-B Is in the half-on state and the RN-U is in the RRC inactive state, the third state includes the RN-B in the off state and the RN-U in the RRC inactive state; and the transceiver unit 21 is configured to The relay device sends the state transition instruction. Therefore, the network equipment can control the relay device to switch between different energy consumption states flexibly, and save the energy consumption of the relay device as much as possible while meeting service requirements.

In one implementation, the relay device is in the first state, and the transceiver unit 21 is configured to send an RRC message to the relay device, where the RRC message includes the state transition indication, and the state transition The indication is used to indicate that the relay device enters the third state. Therefore, the network device can instruct the relay device to switch from the first state to the third state according to the network load, so that the power consumption of the relay device can be saved.

In another implementation, the relay device is in the third state, and the transceiving unit 21 is configured to send a first paging message to the relay device; and the transceiving unit 21 is also configured to receive data from The RRC recovery request message of the relay device; and the transceiving unit 21 is further configured to send an RRC recovery response message to the relay device, the RRC recovery response message including the state transition indication, and the state transition The indication is used to indicate that the relay device enters the first state. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the first state according to the network load condition to meet service requirements.

In another implementation, the relay device is in the third state, and the transceiving unit 21 is configured to send a second paging message to the relay device, and the second paging message includes the state A transition instruction, where the state transition instruction is used to instruct the relay device to enter the first state. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the first state according to the network load condition to meet service requirements.

In another implementation, the relay device is in the second state, and the transceiving unit 21 is configured to send a third paging message to the relay device, and the third paging message includes the state A transition instruction, where the state transition instruction is used to instruct the relay device to enter the third state. Therefore, when the relay device is in the second state, the network device can control the relay device to switch to the third state, so as to save power consumption of the relay device.

In another implementation, the relay device is in the third state, and the transceiving unit 21 is configured to send a fourth paging message to the relay device, and the fourth paging message includes the state A transition instruction, where the state transition instruction is used to instruct the relay device to enter the second state. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the second state according to the network load condition to meet service requirements.

In another implementation, before the relay device enters the third state, the relay device is in the first state, and the transceiving unit 21 is further configured to send configuration information to the relay device. It includes one or more of the following information: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located. Therefore, when the relay device receives the configuration information, it can perform one or more of the following operations based on the configuration information: monitor random access channels, broadcast synchronization signals, broadcast system information, that is, ensure that the relay device enters the second state The normal business needs of the time.

In another implementation, the transceiving unit 21 is further configured to receive state information from the relay device of the relay device or at least one neighbor node of the relay device; and the processing unit 22, And configured to generate the state transition indication according to at least one item of state information in the relay device and at least one neighbor node of the relay device. Therefore, the network equipment can accurately decide the state transition of the relay device according to the network load situation.

According to a network device provided by an embodiment of the present application, the relay device can be controlled to switch between multiple different states, and the energy consumption of the relay device can be saved as much as possible while ensuring the normal communication of the relay device.

FIG. 15 shows a schematic structural diagram of a relay device 3000. The relay device 3000 includes a transceiver unit 31 and a processing unit 32. The transceiving unit 31 may also be referred to as a transceiving unit to implement a transceiving function, for example, it may be a transceiving circuit, a transceiver, a transceiver or a communication interface.

The transceiver unit 31 is configured to receive a state transition instruction from a network device, where the state transition instruction is used to instruct the relay device to perform a transition between the third state and the first state, or between the third state and the second state, Wherein, the relay device includes RN-B and RN-U, the first state includes that the RN-B is in the on state and the RN-U is in the RRC connected state, and the second state includes the RN -B is in a half-open state and the RN-U is in the RRC inactive state, the third state includes the RN-B is in the off state and the RN-U is in the RRC inactive state; and the processing unit 32 uses The state transition is performed according to the state transition instruction. Therefore, the relay device can flexibly switch between different states according to the state transition instruction of the network device, and save the energy consumption of the relay device as much as possible while meeting service requirements.

In one implementation, the relay device is in the first state, and the transceiving unit 31 is configured to receive an RRC message from the network device, where the RRC message includes the state transition indication, and the state transition The indication is used to instruct the relay device to enter the third state; and the processing unit 32 is used to enter the third state according to the first state transition instruction. Therefore, the relay device can switch from the first state to the third state according to the instruction of the network device, so that the power consumption of the relay device can be saved.

In another implementation, the relay device is in the third state; the transceiving unit 31 is further configured to receive the first paging message from the network device; the transceiving unit 31 is further configured to The network device sends an RRC recovery request message; the transceiving unit 31 is further configured to receive an RRC recovery response message from the network device, the RRC recovery response message includes the state transition instruction, and the state transition instruction is used Instructing the relay device to enter the first state; and the processing unit 32 is configured to enter the first state according to the RRC recovery response message. Therefore, when the relay device is in the third state, the network device can control the relay device to switch to the first state according to the service requirement, so as to meet the service requirement.

In another implementation, the relay device is in the third state; the transceiving unit 31 is configured to receive a second paging message from the network device, and the second paging information includes the state A transition instruction, the state transition instruction is used to instruct the relay device to enter the first state; and the processing unit 32 is used to enter the first state according to the second paging message. Therefore, when the relay device is in the third state, the network equipment controls the relay device to switch to the first state according to the service requirements to meet the service requirements, and the relay device can switch to the first state according to the instructions of the network equipment to meet the service requirements. need.

In another implementation, the relay device is in the second state; the transceiving unit 31 is configured to receive a third paging message from the network device, and the third paging message includes the state A transition instruction, the state transition instruction is used to instruct the relay device to enter the third state; and the processing unit 32 is used to enter the third state according to the third paging message. Therefore, when the relay device is in the second state, the relay device can switch to the third state according to the instruction of the network device, so as to save the power consumption of the relay device.

In another implementation, the relay device is in the third state; the transceiving unit 31 is configured to receive a fourth paging message from the network device, and the fourth paging message includes the state A transition instruction, the state transition instruction is used to instruct the relay device to enter the second state; and the processing unit 32 is used to enter the second state according to the fourth paging message. Therefore, when the relay device is in the third state and the network device needs to control the relay device to switch to the second state according to service requirements, the relay device can switch to the second state according to the instructions of the network device to meet the service requirements.

In another implementation, before the relay device enters the third state, the relay device is in the first state; the transceiving unit 31 is configured to receive configuration information from the network device, and the configuration information includes One or more of the following information: the identity of the cell to be activated, the cell system information, the time-frequency resource information where the cell synchronization signal block is located; and the processing unit 32 is configured to enter the second state according to the The configuration information performs one or more of the following operations: monitoring random access channels, broadcasting synchronization signals, and broadcasting system information. Therefore, when the relay device receives the configuration information, it can perform one or more of the following operations based on the configuration information: monitor random access channels, broadcast synchronization signals, broadcast system information, that is, ensure that the relay device enters the second state The normal business needs of the time.

In another implementation, the transceiver unit 31 is configured to send the state information of the relay device to the network device.

According to a relay device provided by an embodiment of the present application, it can switch between a variety of different states according to the state switch instruction of the network equipment. While ensuring the normal communication of the relay device, save the relay device as much as possible. Energy consumption.

Optionally, an embodiment of the present application further provides a chip system, including: at least one processor and an interface, the at least one processor is coupled to the memory through the interface, and when the at least one processor executes a computer program or instruction in the memory At this time, the method in any of the foregoing method embodiments is executed. Optionally, the chip system may be composed of chips, or may include chips and other discrete devices, which are not specifically limited in the embodiment of the present application.

Optionally, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a network device, the network device executes the method in any of the foregoing method embodiments.

Optionally, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a relay device, the relay device executes the method in any of the above-mentioned method embodiments. .

Optionally, an embodiment of the present application further provides a computer program product containing instructions, which when executed by a computer, cause a network device to execute the method in any of the foregoing method embodiments.

Optionally, the embodiments of the present application further provide a computer program product containing instructions, which when executed by a computer, cause the relay device to execute the method in any of the foregoing method embodiments.

Optionally, an embodiment of the present application further provides a communication system, which includes the aforementioned network equipment and a relay device.

It should be understood that, in the description of this application, unless otherwise specified, "/" means that the associated objects before and after are in an "or" relationship, for example, A/B can mean A or B; where A and B can be singular Or plural. Also, in the description of this application, unless otherwise specified, "plurality" means two or more than two. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple . In addition, in order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner to facilitate understanding.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or includes one or more data storage devices such as servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital versatile disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)) Wait.

Although this application has been described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and understand by viewing the drawings, the disclosure, and the appended claims in the process of implementing the claimed application. Implement other changes of the disclosed embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit may implement several functions listed in the claims. Certain measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Correspondingly, the specification and drawings are merely exemplary descriptions of the application as defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims

A state transition method of a relay device, characterized in that the method includes:

The network device generates a state transition instruction, and the state transition instruction is used to instruct the relay device to perform transition between the third state and the first state, or the third state and the second state, wherein the relay The device includes RN-B and RN-U, the first state includes that the RN-B is in an on state and the RN-U is in a radio resource control RRC connected state, and the second state includes that the RN-B is in an RRC connection state. A half-open state and the RN-U is in an RRC inactive state, and the third state includes that the RN-B is in an off state and the RN-U is in the RRC inactive state;

The network device sends the state transition instruction to the relay device.
The method according to claim 1, wherein the relay device is in the first state, and the network device sends the state transition instruction to the relay device, comprising: the network device sends the The relay device sends an RRC message, and the RRC message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the third state.
The method according to claim 1, wherein the relay device is in the third state, and the method further comprises:

Sending, by the network device, a first paging message to the relay device;

Receiving, by the network equipment, an RRC recovery request message from the relay device;

The sending, by the network device, the state transition instruction to the relay device includes: the network device sending an RRC recovery response message to the relay device, the RRC recovery response message including the state transition instruction, and The state transition indication is used to indicate that the relay device enters the first state.
The method according to claim 1, wherein the relay device is in the third state, and the network device sending the state transition instruction to the relay device comprises: the network device sends the state transition instruction to the relay device. The relay device sends a second paging message, the second paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the first state.
The method according to claim 1, wherein the relay device is in the second state, and the network device sending the state transition instruction to the relay device comprises: the network device sends the state transition instruction to the relay device. The relay device sends a third paging message, the third paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the third state.
The method according to claim 1, wherein the relay device is in the third state, and the network device sending the state transition instruction to the relay device comprises: the network device sends the state transition instruction to the relay device. The relay device sends a fourth paging message, where the fourth paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the second state.
7. The method according to claim 6, wherein the relay device is in the first state before the relay device enters the third state, and the method further comprises:

The network device sends configuration information to the relay device, where the configuration information includes one or more of the following information: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located.
The method according to any one of claims 1-7, wherein the method further comprises:

Receiving, by the network equipment, state information from the relay device of the relay device or at least one neighbor node of the relay device;

The generation of the state transition indication by the network device includes:

The network device generates the state transition indication according to at least one item of state information in the relay device and at least one neighbor node of the relay device.
A state transition method of a relay device, characterized in that the method includes:

The relay device receives a state transition instruction from a network device, and the state transition instruction is used to instruct the relay device to perform a transition between a third state and a first state, or a third state and a second state, wherein , The relay device includes RN-B and RN-U, the first state includes that the RN-B is in an on state and the RN-U is in a radio resource control RRC connection state, and the second state includes all The RN-B is in a half-on state and the RN-U is in an RRC inactive state, and the third state includes that the RN-B is in an off state and the RN-U is in the RRC inactive state;

The relay device performs state transition according to the state transition instruction.
The method according to claim 9, wherein the relay device is in the first state, and the relay device receives a state transition instruction from a network device, comprising: the relay device receives from the An RRC message of a network device, where the RRC message includes the state transition indication, and the state transition indication is used to instruct the relay device to enter the third state;

The relay device performing state transition according to the state transition instruction includes: the relay device enters the third state according to a first state transition instruction.
The method according to claim 9, wherein the relay device is in the third state, and the method further comprises:

The relay device receives the first paging message from the network device;

Sending, by the relay device, an RRC recovery request message to the network device;

The relay apparatus receiving the state transition instruction from the network device includes: the relay apparatus receives an RRC recovery response message from the network device, the RRC recovery response message includes the state transition instruction, and The state transition indication is used to indicate that the relay device enters the first state;

The relay device performing state transition according to the state transition instruction includes: the relay device enters the first state according to the RRC recovery response message.
The method according to claim 9, wherein the relay device is in the third state, and the method further comprises:

The relay apparatus receives a second paging message from the network device, the second paging message includes the state transition indication, and the state transition indication is used to instruct the relay apparatus to enter the first state;

The relay device performing state transition according to the state transition instruction includes: the relay device enters the first state according to the second paging message.
The method according to claim 9, wherein the relay device is in the second state, and the relay device receives a state transition indication from the network device, comprising: the relay device receives from A third paging message of the network device, where the third paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the third state;

The relay device performing state transition according to the state transition instruction includes: the relay device enters the third state according to the third paging message.
The method according to claim 9, wherein the relay device is in the third state, and the relay device receives a state transition instruction from the network device, comprising: the relay device receives from A fourth paging message of the network device, where the fourth paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the second state;

The relay device performing state transition according to the state transition instruction includes: the relay device enters the second state according to the fourth paging message.
The method according to claim 14, wherein the relay device is in the first state before the relay device enters the third state, and the method further comprises:

The relay device receives configuration information from the network equipment, where the configuration information includes one or more of the following information: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located;

After the relay device enters the second state, the relay device performs one or more of the following operations according to the configuration information: monitoring a random access channel, broadcasting a synchronization signal, and broadcasting system information.
The method according to any one of claims 9-15, wherein the method further comprises:

The relay device sends the status information of the relay device to the network device.
A network device, characterized in that it comprises:

A processing unit, configured to generate a state transition instruction, the state transition instruction being used to instruct the relay device to perform a transition between the third state and the first state, or the third state and the second state, wherein The relay device includes an RN-B and an RN-U, the first state includes that the RN-B is in an on state and the RN-U is in a radio resource control RRC connected state, and the second state includes the RN -B is in a half-open state and the RN-U is in an RRC inactive state, and the third state includes that the RN-B is in an off state and the RN-U is in the RRC inactive state;

The transceiver unit is used to send the state transition indication.
The network device according to claim 17, wherein the relay device is in the first state, and the transceiving unit is configured to send an RRC message to the relay device, and the RRC message includes the A state transition indication, where the state transition indication is used to indicate that the relay device enters the third state.
The network device according to claim 17, wherein the relay device is in the third state, and the transceiver unit is configured to send a first paging message to the relay device;

The transceiving unit is further configured to receive an RRC recovery request message from the relay device;

The transceiver unit is further configured to send an RRC recovery response message to the relay device, where the RRC recovery response message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the first One state.
The network device according to claim 17, wherein the relay device is in the third state, and the transceiving unit is configured to send a second paging message to the relay device, and the second The paging information includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the first state.
The network device according to claim 17, wherein the relay device is in the second state, and the transceiving unit is configured to send a third paging message to the relay device, and the third The paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the third state.
The network device according to claim 17, wherein the relay device is in the third state, and the transceiving unit is configured to send a fourth paging message to the relay device, and the fourth The paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the second state.
The network device according to claim 22, wherein before the relay device enters the third state, the relay device is in the first state, and the transceiving unit is further configured to send to the relay device Configuration information, the configuration information includes one or more of the following information: the identity of the cell to be activated, cell system information, and time-frequency resource information where the cell synchronization signal block is located.
The network device according to any one of claims 17 to 23, characterized in that:

The transceiving unit is further configured to receive state information from the relay device of the relay device or at least one neighbor node of the relay device;

The processing unit is configured to generate the state transition indication according to at least one item of state information of at least one of the relay device and at least one neighbor node of the relay device.
A relay device, characterized in that the relay device includes:

The transceiver unit is configured to receive a state transition instruction from a network device, the state transition instruction is used to instruct the relay device to perform a transition between the third state and the first state, or between the third state and the second state, wherein , The relay device includes RN-B and RN-U, the first state includes that the RN-B is in an on state and the RN-U is in a radio resource control RRC connection state, and the second state includes all The RN-B is in a half-on state and the RN-U is in an RRC inactive state, and the third state includes that the RN-B is in an off state and the RN-U is in the RRC inactive state;

The processing unit is configured to perform state transition according to the state transition instruction.
The relay device according to claim 25, wherein the relay device is in the first state, and the transceiving unit is configured to receive an RRC message from the network device, and the RRC message includes all The state transition instruction, where the state transition instruction is used to indicate that the relay device enters the third state;

The processing unit is configured to enter the third state according to the first state transition instruction.
The relay device according to claim 25, wherein the relay device is in the third state;

The transceiving unit is further configured to receive a first paging message from the network device;

The transceiving unit is further configured to send an RRC recovery request message to the network device;

The transceiver unit is further configured to receive an RRC recovery response message from the network device, where the RRC recovery response message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the second A state

The processing unit is configured to enter the first state according to the RRC recovery response message.
The relay device according to claim 27, wherein the relay device is in the third state;

The transceiving unit is configured to receive a second paging message from the network device, the second paging information includes the state transition indication, and the state transition indication is used to instruct the relay device to enter the First state

The processing unit is configured to enter the first state according to the second paging message.
The relay device according to claim 27, wherein the relay device is in the second state;

The transceiving unit is configured to receive a third paging message from the network device, where the third paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the Third state

The processing unit is configured to enter the third state according to the third paging message.
The relay device according to claim 27, wherein the relay device is in the third state;

The transceiving unit is configured to receive a fourth paging message from the network device, where the fourth paging message includes the state transition instruction, and the state transition instruction is used to instruct the relay device to enter the Second state

The processing unit is configured to enter the second state according to the fourth paging message.
The relay device of claim 30, wherein the relay device is in the first state before the relay device enters the third state;

The transceiver unit is configured to receive configuration information from the network device, the configuration information includes one or more of the following information: the identity of the cell to be activated, cell system information, and time-frequency resource where the cell synchronization signal block is located information;

The processing unit is configured to perform one or more of the following operations according to the configuration information after entering the second state: monitoring a random access channel, broadcasting a synchronization signal, and broadcasting system information.
The method according to any one of claims 25 to 31, characterized in that:

The transceiver unit is configured to send the status information of the relay device to the network device.
A network device, characterized by comprising: a processor, configured to execute a program stored in a memory, and when the program is executed, the network device is caused to execute the network device according to any one of claims 1 to 8. method.
The network device according to claim 33, wherein the memory is located outside the network device.
A relay device, comprising: a processor, configured to execute a program stored in a memory, and when the program is executed, the relay device is caused to execute the relay device as described in any one of claims 9 to 16 The method described.
The relay device according to claim 35, wherein the memory is located outside the relay device.
A network device, characterized in that the network device includes a processor, a memory, and a computer program stored on the memory and running on the processor, and when the computer program is run, it executes as claimed in claims 1-8 The method of any one of.
A relay device, characterized in that the relay device includes a processor, a memory, and a computer program stored on the memory and running on the processor, and when the computer program is run, it executes as claimed in claim 9. The method of any one of ~16.
A computer-readable storage medium, which is characterized by comprising a computer program, which when running on a computer, is the method according to any one of claims 1-16.
A computer program product, characterized in that, when it runs on a computer, the method described in any one of claims 1 to 16 is executed.