CN113258967A

CN113258967A - Beam recovery method, direct communication link terminal and communication equipment

Info

Publication number: CN113258967A
Application number: CN202010083071.8A
Authority: CN
Inventors: 翟海涛; 赵亚利; 王达
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2021-08-13

Abstract

The invention provides a beam recovery method, a direct communication link terminal and communication equipment, wherein the method comprises the following steps: receiving a beam forming signal sent by a first terminal through a through link, and carrying out beam quality measurement on the received beam forming signal; when the beam forming failure is determined to occur according to the beam measuring result, the beam quality measuring result and/or the beam failure indication are/is sent to the first terminal for beam selection through other carrier links or non-through links on the through link, the other carrier links are carrier links except the carrier link occupied by the beam forming signal on the through link, and the beam recovery process can be rapidly completed after the beam is sent by the direct link communication interface failure by using the method, so that the service continuity can be maintained.

Description

Beam recovery method, direct communication link terminal and communication equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a beam recovery method, a direct communication link terminal, and a communication device.

Background

The devices and the devices which are close to each other allow direct communication between the devices to be performed directly, as shown in fig. 1, a direct communication schematic diagram is shown, for convenience of description, a direct communication link between a device and a device is defined as a Sidelink link, and a corresponding wireless interface is referred to as a direct communication interface (also referred to as a Sidelink interface or a PC5 interface); the cellular communication link between the network and the direct communication device is called a uulink, and its corresponding interface is called a Uu interface.

V2X (vehicle-to-Everything) communication is one of direct communication, and V2X communication mainly includes three aspects:

V2V (Vechile-to-Vechile, car-to-car): communication between On Board Units (OBUs) On the vehicle;

V2I (vehicle-to-Infrastructure): communication between the vehicle and an RSU (Road Side Unit);

V2P (vehicle-to-Pedestrian): communication between the vehicle and the pedestrian.

The V2X technology can sense the surrounding conditions of vehicles in real time, share road information and perform early warning in time by means of wireless communication between vehicles, vehicle and road test infrastructure, and vehicles and pedestrians, and has become a research hotspot for solving the problem of road safety in countries around the world at present.

In the existing LTE V2X technology (Rel-14 LTE V2X technology), PC5 interface broadcast communication for transmitting data between a UE (User Equipment) and the UE can already support transmission of basic road security-based services.

With the further development of the car networking technology, NR V2X now presents some new application scenarios compared to LTE V2X, such as: vehicle formation, advanced driving, sensor information sharing, remote control, and the like. Compared to 4G LTE, the 5G NR defines a broader frequency range, including two broad frequency ranges FR1(450MHz-6GHz, i.e., less than 6GHz band) and FR2(24.25GHz-52.6GHz, i.e., millimeter wave band).

Corresponding to NR V2X unicast, multicast and broadcast services, in order to increase transmission rate, the high frequency FR2 will also be used for PC5 interface, and the FR2 band can provide larger bandwidth but has different propagation characteristics than the low frequency band due to its short wavelength, such as higher propagation loss, poor reflection and diffraction capability, etc. Therefore, a larger-scale antenna array is adopted to form a larger shaped beam, so that the propagation loss is overcome, and the system coverage is ensured. After beamforming, signal energy is concentrated in a narrow range, UE in coverage can receive larger signal energy, and UE out of coverage can receive smaller signal. When the receiving UE moves, a beamforming failure may occur, that is, the beamforming beam of the originating UE does not cover the receiving UE, and at this time, the receiving UE needs to notify the originating UE of the beamforming failure, update the beam, and complete a beam recovery process.

Therefore, the beam recovery becomes a more critical technology after the beam forming fails, currently, a Uu port is adopted for beam recovery, different PRACH channels correspond to different beams, the UE selects the corresponding PRACH channel to initiate a random access process, and the base station can judge the beam selected by the UE after receiving the random access process; however, for the PC5 interface, there is no corresponding solution for the beam recovery procedure after the beam failure.

Disclosure of Invention

The invention provides a beam recovery method, a direct communication link terminal and communication equipment, which are used for solving the problems that the fading of using a high-frequency FR2 to transmit an infinite signal by using a PC5 interface is stronger, the diffraction capability is weakened, and when the signal coverage is improved by using a beam forming technology, the conventional beam recovery technical scheme cannot be directly used due to the absence of a PRACH channel due to the PC5 interface.

A first aspect of the present invention provides a beam recovery method applied to a second terminal, including:

receiving a beam forming signal sent by a first terminal through a through link, and carrying out beam quality measurement on the received beam forming signal;

and when the occurrence of the beamforming failure is determined according to the beam measurement result, the beam quality measurement result and/or the beam failure indication are/is sent to the first terminal for beam selection through other carrier links or non-through links on the through link, wherein the other carrier links are carrier links except the carrier link occupied by the beamforming signal on the through link.

Optionally, the sending, by the non-direct link, the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection includes:

when the first terminal and the second terminal are determined to be in the network coverage range of the base station, the base station sends the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection; or

And when the relay node exists between the first terminal and the second terminal, sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through the relay node.

Optionally, sending, by the relay node, the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection, where the beam selection includes:

sending a beam quality measurement result and/or a beam failure indication to the first terminal for beam selection through a third terminal between the first terminal and the second terminal; or

And sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through the integrated access return IAB between the first terminal and the second terminal.

Optionally, the sending, by another carrier link on the through link, the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection includes:

and transmitting the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through a frequency range FR1 carrier link on the through link.

Optionally, sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection, including:

sending a beam quality measurement result of a beam to a first terminal so that the first terminal determines to select the beam for beam forming; or

And sending the beam quality measurement results of the plurality of beams to the first terminal so that the first terminal performs beam forming according to one beam selected from the plurality of beams.

Optionally, the beam quality measurement comprises at least one of:

reference signal received power, RSRP, of a beam, reference signal received quality, RSRQ, of a beam, channel quality, CQI, of a beam.

A second aspect of the present invention provides a beam recovery method applied to a first terminal, including:

sending the beam forming signal to a second terminal through a direct link;

receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through other carrier links or through a non-through link when the second terminal determines that the beam forming fails, wherein the other carrier links are carrier links except the carrier link occupied by the beam forming signal on the through link;

and selecting the beam according to the beam quality measurement result and/or the beam failure indication, and re-performing beam forming by using the selected beam.

Optionally, the receiving the beam quality measurement result and/or the beam failure indication sent by the second terminal through the non-through link includes:

receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through a base station covering the first terminal and the second terminal; or

And receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through a relay node between the first terminal and the second terminal.

Optionally, receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through a relay node between the first terminal and the second terminal includes:

receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through a third terminal between the first terminal and the second terminal; or

And receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through the integrated access between the first terminal and the second terminal to the IAB base station.

Optionally, the receiving the beam quality measurement result and/or the beam failure indication sent by the second terminal through the other carrier links on the through link includes:

receiving a beam quality measurement and/or a beam failure indication sent by said second terminal over said through-link over a frequency range FR1 carrier link.

Optionally, the beam selection according to the beam quality measurement result and/or the beam failure indication includes:

if the beam quality measurement result is the beam quality measurement result of one beam, determining to select the beam for beam forming; or

And if the beam quality measurement result is the beam quality measurement result of a plurality of beams, selecting one beam from the plurality of beams for beam forming according to the beam quality measurement result of the plurality of beams.

Optionally, the beam quality measurement comprises at least one of:

A third aspect of the present invention provides a beam recovery method applied to a communication device between terminals of a direct communication link, including:

receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal when the second terminal determines that the beam forming fails according to the beam measurement result;

and sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection.

Optionally, the communication device is a base station or a relay node.

Optionally, the relay node is a third terminal between the first terminal and the second terminal, or an integrated access backhaul IAB base station between the first terminal and the second terminal.

A fourth aspect of the present invention provides a direct communication link terminal, comprising:

a memory to store instructions;

a processor for reading the instructions in the memory, performing the following processes:

Optionally, when the processor is configured to execute sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through the non-through link, the method specifically includes:

Optionally, when the processor is configured to execute sending the beam quality measurement result and/or the beam failure indication to the first terminal through the relay node for beam selection, the method specifically includes:

Optionally, the processor is configured to, when the processor is configured to execute sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through another carrier link on the through link, specifically include:

Optionally, when the processor is configured to perform sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection, the method specifically includes:

Optionally, the beam quality measurement comprises at least one of:

A fifth aspect of the present invention provides a direct communication link terminal, comprising:

a memory to store instructions;

sending the beam forming signal to a second terminal through a direct link;

Optionally, when the processor is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a non-direct link, the method specifically includes:

Optionally, when the processor is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a relay node between the first terminal and the second terminal, the method specifically includes:

Optionally, when the processor is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through another carrier link on the through link, the method specifically includes:

Optionally, when the processor is configured to perform beam selection according to the beam quality measurement result and/or the beam failure indication, the method specifically includes:

Optionally, the beam quality measurement comprises at least one of:

A sixth aspect of the present invention provides a communication apparatus between terminals of a direct communication link, the apparatus comprising:

a memory to store instructions;

Optionally, the communication device is a base station or a relay node.

A seventh aspect of the present invention provides a direct communication link terminal, comprising:

the measurement unit is used for receiving a beam forming signal sent by a first terminal through a through link and carrying out beam quality measurement on the received beam forming signal;

and the selection unit is used for sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through other carrier links or non-through links on the through link when the beam forming failure is determined to occur according to the beam measurement result, wherein the other carrier links are carrier links except the carrier link occupied by the beam forming signal on the through link.

Optionally, the selecting unit is configured to send, by the base station, a beam quality measurement result and/or a beam failure indication to the first terminal for beam selection when it is determined that both the first terminal and the second terminal are within a network coverage of the base station; or

Optionally, the selecting unit is configured to send the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through a third terminal between the first terminal and the second terminal; or

Optionally, the selecting unit is configured to send the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through the frequency range FR1 carrier link on the through link.

Optionally, the selecting unit is configured to send a beam quality measurement result of a beam to the first terminal, so that the first terminal determines to select the beam for beamforming; or

Optionally, the beam quality measurement in the selection unit comprises at least one of:

An eighth aspect of the present invention provides a direct communication link terminal, including:

the transmitting unit is used for transmitting the beam forming signal to the second terminal through the direct link;

an indicating unit, configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through another carrier link or through a non-through link when it is determined that beamforming failure occurs, where the other carrier link is a carrier link on the through link except a carrier link occupied by the beamforming signal;

and the selecting unit is used for selecting the beam according to the beam quality measuring result and/or the beam failure indication and re-forming the beam by using the selected beam.

Optionally, the indication unit is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a base station covering the first terminal and the second terminal; or

Optionally, the indication unit is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a third terminal between the first terminal and the second terminal; or

Optionally, the apparatus further comprises an indicating unit, configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a carrier link of frequency range FR1 over the through link.

Optionally, in the indicating unit, if the beam quality measurement result is a beam quality measurement result of one beam, determining to select the beam for beam forming; or

Optionally, the beam quality measurement result in the indicating unit includes at least one of:

A ninth aspect of the present invention provides a communication device between direct communication link terminals, comprising:

the receiving unit is used for receiving a beam quality measurement result and/or a beam failure indication which are sent when the second terminal determines that the beam forming fails according to the beam measurement result;

a sending unit, configured to send the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection.

Optionally, the communication device is a base station or a relay node.

A tenth aspect of the invention provides a computer storage medium having stored thereon a computer program which, when executed by a processor, performs the method of any one of the first aspects of the invention, or the method of any one of the second aspects of the invention, or the method of any one of the third aspects of the invention.

By using the beam recovery method, the direct communication link terminal and the communication equipment provided by the invention, after the beam transmission failure of the direct link communication interface, the beam recovery process can be rapidly completed by the second terminal through other carrier links or through the data beam quality measurement result and/or the beam failure indication transmitted by the non-direct link, and the continuity of the service can be maintained.

Drawings

FIG. 1 is a system diagram of beam recovery;

fig. 2 is a complete flow diagram of the second terminal sending beam quality measurements and/or beam failure indications to the first terminal via the base station;

fig. 3 is a complete flow diagram of the second terminal sending a beam quality measurement and/or a beam failure indication to the first terminal via the third terminal;

fig. 4 is a complete flow diagram of the second terminal sending a beam quality measurement and/or a beam failure indication to the first terminal via the IAB base station;

fig. 5 is a complete flow diagram of the second terminal sending beam quality measurements and/or beam failure indications to the first terminal over the FR1 carrier link;

fig. 6 is a beam recovery method applied to a receiving end;

fig. 7 is a beam recovery method applied to a transmitting end;

fig. 8 is a beam recovery method applied to a node of a non-through link;

FIG. 9 is a schematic diagram of a direct communication link terminal structure;

FIG. 10 is a schematic diagram of a direct communication link termination structure;

FIG. 11 is a schematic diagram of a communication device between terminals of a direct communication link;

FIG. 12 is a schematic diagram of a direct communication link termination module;

FIG. 13 is a schematic diagram of a direct communication link termination module;

fig. 14 is a block diagram of a communication device between terminals of a direct communication link.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.

(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In order to improve the transmission rate of NR V2X, in the future, the high frequency band FR2 will be used for the PC5 interface, but in the FR2 frequency band, the fading of wireless signals is strong, the diffraction capability is weak, and a beamforming technology is required to improve the signal coverage. Under the beam forming technology, the beam recovery after the beam failure becomes a more critical technology, the Uu port beam recovery of the base station can correspond to different beams through different PRACH channels, the UE selects the corresponding PRACH channel to initiate a random access process, and the base station can judge the beam selected by the UE after receiving the random access process.

The NR Uu port supports multiple PRACH, and when SSB-per-RACH-occase (SSB single sideband number) < ═ 1, one RO (RACH occupancy, random access time) or multiple ROs correspond to one SSB (different SSBs use beams in different transmission directions to transmit broadcast information), the terminal can inform the base station of the most appropriate downlink beam transmission direction through the selected RO;

when ssb-perRACH-occupancy >1, the terminal needs to combine the RO and the preamble code to inform the base station of the most appropriate downlink beam transmission direction.

However, for the PC5 interface, there is no PRACH channel design at present, and the beam recovery process after the beam failure cannot directly follow the previous technical solution to perform beam recovery.

The core idea of the embodiment of the invention for beam recovery is as follows: the first terminal is used as a transmitting end of the through link, the second terminal is used as a receiving end of the through link, and the first terminal or the second terminal performs beam selection, which may be but is not limited to performing beam selection based on channel quality of a beam between the first terminal and the second terminal, where the second terminal determines whether a beamforming failure occurs, and sends a beam quality measurement result and/or a beam failure indication to the first terminal for beam selection.

Example one

As shown in fig. 1, a beam recovery system provided for the implementation of the present invention includes:

a first terminal 101, configured to send a beamforming signal to a second terminal through a direct link; receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through other carrier links or through a non-through link when the second terminal determines that the beam forming fails, wherein the other carrier links are carrier links except the carrier link occupied by the beam forming signal on the through link; selecting a wave beam according to the wave beam quality measuring result and/or the wave beam failure indication, and re-forming the wave beam by using the selected wave beam;

the second terminal 102 is configured to receive a beam-forming signal sent by the first terminal through the direct link, and perform beam quality measurement on the received beam-forming signal; and when the occurrence of the beamforming failure is determined according to the beam measurement result, the beam quality measurement result and/or the beam failure indication are/is sent to the first terminal for beam selection through other carrier links or non-through links on the through link, wherein the other carrier links are carrier links except the carrier link occupied by the beamforming signal on the through link.

As an optional implementation manner, when the second terminal 102 determines that beamforming failure occurs according to the beam measurement result, and sends the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through the non-through link, any one of the following manners may be adopted:

in a first manner, when it is determined that both the first terminal 101 and the second terminal 102 are within the network coverage of the base station 103, the base station 103 sends a beam quality measurement result and/or a beam failure indication to the first terminal 101 for beam selection, and the first terminal 101 receives the beam quality measurement result and/or the beam failure indication sent by the second terminal 102 through the base station 103 covering the first terminal 101 and the second terminal 102;

in this embodiment, the second terminal 102 transmits the beam quality measurement result and/or the beam failure indication to the base station 103 through the Uu port, and the base station 103 transmits the beam quality measurement result and/or the beam failure indication to the first terminal 101 through the Uu port.

As shown in fig. 2, it is a complete procedure for the second terminal 102 to send the beam quality measurement result and/or the beam failure indication to the first terminal 101 through the base station 103;

step 201, a first terminal sends data and/or control information to a second terminal by adopting beamforming;

step 202, the second terminal judges whether the beam forming failure occurs according to the beam measuring result;

step 203, if the beamforming failure occurs, the second terminal sends a beamforming failure indication and/or an alternative beamforming measurement result to the base station;

step 204, the base station forwards the beam failure indication and/or the alternative beam measurement result to the first terminal;

step 205, after the first terminal reselects the beam, the first terminal continues to transmit data and/or control information by using new beam forming.

In a second mode, when a relay node exists between a first terminal and a second terminal, the second terminal sends a beam quality measurement result and/or a beam failure indication to the first terminal through the relay node, and the first terminal receives the beam quality measurement result and/or the beam failure indication sent by the second terminal through the relay node between the first terminal and the second terminal;

in this embodiment, the relay node is a node having a relay function between the first terminal and the second terminal, and may be, but is not limited to, a relay node of the following form:

and a third terminal between the first terminal and the second terminal or an integrated access backhaul IAB between the first terminal and the second terminal.

Specifically, the second terminal sends the beam quality measurement result and/or the beam failure indication to a third terminal between the first terminal and the second terminal through a PC5 interface, the third terminal sends the beam quality measurement result and/or the beam failure indication to the first terminal through a PC5 interface for beam selection, and the first terminal receives the beam quality measurement result and/or the beam failure indication sent by the second terminal through the third terminal between the first terminal and the second terminal;

as shown in fig. 3, it is a complete procedure for the second terminal to send the beam quality measurement result and/or the beam failure indication to the first terminal through the third terminal;

step 301, a first terminal sends data and/or control information to a second terminal by using beamforming;

step 302, the second terminal judges whether beam failure occurs according to the beam measurement result;

step 303, if a beam failure occurs, the second terminal sends a beam failure indication and/or an alternative beam measurement result to the third terminal;

step 304, the third terminal forwards the beam failure indication and/or the alternative beam measurement result to the first terminal;

step 305, after the first terminal reselects the beam, the first terminal continues to transmit data and/or control information by using new beam forming.

Or the second terminal sends the beam quality measurement result and/or the beam failure indication to the integrated access backhaul IAB base station between the first terminal and the second terminal, the IAB base station sends the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection, and the first terminal receives the beam quality measurement result and/or the beam failure indication sent by the second terminal through the integrated access backhaul IAB base station between the first terminal and the second terminal.

The IAB base station is a base station integrating a wireless access link and a wireless return link, wherein the access link is a communication link between a terminal and the IAB base station, and the wireless return link is a communication link between the IAB base stations for returning data, so that the IAB base station does not need a wired transmission network for returning the data. Based on the method, the IAB base station is easier to be deployed in a dense scene, and the burden of deploying a wired transmission network is reduced.

An IAB donor base station in the IAB base station provides a wireless return function for the IAB base station and provides interfaces of a first terminal, a second terminal and a core network, the IAB donor base station is in wired connection with the core network, the IAB base station is not in wired connection with the core network, and the IAB base station is connected to the IAB donor base station through a wireless return link, so that the terminals are connected with the core network.

As shown in fig. 4, it is a complete procedure for the second terminal to send the beam quality measurement result and/or the beam failure indication to the first terminal through the IAB base station;

step 401, a first terminal sends data and/or control information to a second terminal by using beamforming;

step 402, the second terminal judges whether beam failure occurs according to the beam measurement result;

step 403, if the beam failure occurs, the second terminal wirelessly transmits the beam failure indication and/or the alternative beam measurement result to the IAB base station;

step 404, the IAB base station wirelessly transmits the beam failure indication and/or the alternative beam measurement result to the first terminal;

step 405, after the first terminal reselects the beam, the first terminal continues to transmit data and/or control information by using new beam forming.

In the embodiment of the invention, the first terminal, the second terminal and the third terminal are devices with wireless communication functions, can be deployed on land and comprise indoor or outdoor, handheld or vehicle-mounted devices; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., an airplane or balloon, etc.). The terminal may have different expression forms, and may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiving function, a VR (virtual reality) terminal, an AR (augmented reality) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like; various forms of UE, Mobile Station (MS), and other terminal equipment (terminal device) are also possible. The terminal is used for realizing the setting and the acquisition of a communication state of a terminal user through the installed wireless transceiving antenna to finish communication.

As another optional implementation, when the second terminal determines that beamforming failure occurs according to the beam measurement result, and sends the beam quality measurement result and/or the beam failure indication to the first terminal through another carrier link on the through link for beam selection, the another carrier link may be a Frequency range FR1 carrier link, where the FR1 carrier link is Frequency range 1: frequency bands below 6GHz, frequency range: 450MHz to 6.0GHz, and a maximum channel bandwidth of 100MHz, which may also be an FR2 carrier link in which beamforming failure does not occur according to a channel quality measurement result, where the FR2 carrier link is Frequency range 2, and a Frequency range is as follows: 24.25GHz-52.6GHz and maximum channel bandwidth of 400 MHz.

Specifically, the second terminal sends the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through the frequency range FR1 carrier link on the through link, and the first terminal receives the beam quality measurement result and/or the beam failure indication sent by the second terminal through the frequency range FR1 carrier link on the through link.

As shown in fig. 5, the complete procedure for the second terminal to send the beam quality measurement result and/or the beam failure indication to the first terminal through the FR1 carrier link includes:

step 501, a first terminal sends data and/or control information to a second terminal by adopting beamforming;

step 502, the second terminal judges whether the beam forming failure occurs according to the beam measuring result;

in step 503, if a beamforming failure occurs, the second terminal sends a beam failure indication and/or an alternative beam measurement result to the first terminal through the FR1 carrier link.

Step 504, after the first terminal reselects the beam, the first terminal continues to transmit data and/or control information by using new beam forming.

In the embodiment of the present invention, the second terminal performs channel quality measurement on all carrier links on the through link, determines a carrier link in which beamforming failure occurs according to a channel quality measurement result, and performs channel quality measurement, where the channel quality measurement may be performed on at least one of the following: reference signal received power, RSRP, of a beam, reference signal received quality, RSRQ, of a beam, channel quality, CQI, of a beam. And determining whether beamforming failure occurs according to the corresponding threshold value.

As an optional implementation manner, when the second terminal determines that beamforming failure occurs, the first terminal may send only the beam quality measurement result to the first terminal through another carrier link on the direct link or through a non-direct link, and the first terminal receives the beam quality measurement result sent by the second terminal.

In this embodiment, the beam quality measurement result includes at least one of: reference signal received power, RSRP, of a beam, reference signal received quality, RSRQ, of a beam, channel quality, CQI, of a beam. Further, the beam quality measurement may also include an identification of the beam.

In this manner, the first terminal may select a beam, or the second terminal may select a beam with better quality and lighter load, and send the identifier of the beam, RSRP, RSRQ, and CQI of the beam to the first terminal if the second terminal selects a beam according to the beam quality measurement results of the multiple beams, or only send the identifier of the selected beam to the first terminal as the beam quality measurement result, and the first terminal determines that the beam quality measurement result is the beam quality measurement result of one beam according to the received beam quality measurement result, and then determines to select the beam for beamforming according to the identifier of the beam, or determines to select the beam for beamforming according to the identifier of the selected beam.

In addition, the first terminal may select a beam, and the second terminal sends the beam quality measurement results of the multiple beams to the first terminal according to the beam quality measurement results of the multiple beams, where the multiple beams may be all beams or some beams with better quality, and if all beams are, the beam quality measurement result includes an identifier of the beam and a corresponding RSRP, RSRQ, and/or CQI, and if a beam with better quality is selected, the beam quality measurement result includes an identifier of the beam and may or may not carry a corresponding RSRP, RSRQ, and/or CQI. After receiving the beam quality measurement result, the first terminal determines that the beam quality measurement result is a beam quality measurement result of a plurality of beams, and selects one beam from the plurality of beams for beam forming according to the beam quality measurement result of the plurality of beams. Specifically, if the beam quality measurement result includes RSRP, RSRQ, and/or CQI, a beam with better quality is selected according to RSRP, RSRQ, and/or CQI, and if the beam quality measurement result only includes an identifier of a beam, a beam identifier may be randomly selected from a plurality of beam identifiers, and the selected beam is determined to be selected for beamforming according to the identifier of the selected beam.

As another optional implementation, when determining that beamforming failure occurs, the second terminal may send only a beam failure indication to the first terminal through another carrier link on the direct link or through a non-direct link, where the beam failure indication may be a newly defined symbol, or may also use an existing reserved symbol, and further, may send the identifier of the beam to the first terminal as the beam failure indication.

As another optional implementation, when the second terminal determines that the beamforming failure occurs, the second terminal may send the beam failure indication and the beam quality measurement result to the first terminal through another carrier link on the direct link or through a non-direct link at the same time.

The system architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the system architecture and the appearance of a new service scenario.

Example two

The present invention provides a beam recovery method, which is applied to a second terminal as a receiving end, as shown in fig. 6, and includes:

601, receiving a beam forming signal sent by a first terminal through a through link, and performing beam quality measurement on the received beam forming signal;

step 602, when it is determined that beamforming failure occurs according to the beam measurement result, sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through another carrier link or through a non-through link on the through link, where the another carrier link is a carrier link on the through link except for a carrier link occupied by the beamforming signal.

Optionally, the beam quality measurement comprises at least one of:

The present invention further provides a beam recovery method, when applied to a first terminal as a transmitting end, as shown in fig. 7, including:

step 701, sending a beam forming signal to a second terminal through a direct link;

step 702, receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through another carrier link or through a non-through link when determining that the beam forming failure occurs, where the other carrier link is a carrier link on the through link except a carrier link occupied by the beam forming signal;

and 703, selecting a beam according to the beam quality measurement result and/or the beam failure indication, and performing beamforming again by using the selected beam.

Optionally, the beam quality measurement comprises at least one of:

An embodiment of the present invention provides a method for recovering a beam, which is applied to a communication device located between a first terminal and a second terminal, and as shown in fig. 8, the method includes:

step 801, receiving a beam quality measurement result and/or a beam failure indication sent by a second terminal when determining that beam forming failure occurs according to a beam measurement result;

step 802, sending the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection.

Alternatively, the communication device may be a base station or a relay node.

The invention provides a beam forming recovery method, which can quickly complete the beam recovery process by the second terminal through other carrier links or through the beam quality measurement result and/or beam failure indication sent by a non-direct link after the beam sending failure of a direct link communication interface, and can keep the continuity of the service.

For a specific implementation of the beam recovery method provided in the embodiment of the present invention, reference may be made to the beam recovery methods at the first terminal side and the second terminal side in the first embodiment, and details thereof are not repeated here.

EXAMPLE III

As shown in fig. 9, an embodiment of the present invention provides a direct communication link terminal, which includes one or more processors (CPU) 901 (e.g., one or more processors) and a memory 902, and one or more storage media 903 (e.g., one or more mass storage devices) for storing applications 904 or data 906. Memory 902 and storage medium 903 may be, among other things, transient storage or persistent storage. The program stored in the storage medium 903 may include one or more modules (not shown), and each module may include a series of instruction operations in the information processing apparatus. Further, the processor 901 may be configured to communicate with the storage medium 903, and execute a series of instruction operations in the storage medium 903 on the terminal 900.

Terminal 900 can also include one or more power supplies 910, one or more wired or wireless network interfaces 907, one or more input-output interfaces 908, and/or one or more operating systems 905, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc.

The terminal is used for receiving a beam forming signal sent by the first terminal through the through link and carrying out beam quality measurement on the received beam forming signal;

Optionally, the beam quality measurement comprises at least one of:

The direct communication link terminal provided in the embodiment of the present invention belongs to the same inventive concept as the beam recovery method provided in the first embodiment, and specific embodiments may refer to the beam recovery methods of the first terminal side and the second terminal side in the first embodiment, which are not repeated here.

As shown in fig. 10, a direct communication link terminal according to an embodiment of the present invention includes one or more processors (CPU) 1001 (e.g., one or more processors) and a memory 1002, and one or more storage media 1003 (e.g., one or more mass storage devices) storing an application 1004 or data 1006. Wherein the memory 1002 and the storage medium 1003 may be transient storage or persistent storage. The program stored in the storage medium 1003 may include one or more modules (not shown), and each module may include a series of instruction operations in the information processing apparatus. Further, the processor 1001 may be configured to communicate with the storage medium 1003, and execute a series of instruction operations in the storage medium 1003 on the terminal 1000.

Terminal 1000 can also include one or more power supplies 1010, one or more wired or wireless network interfaces 1007, one or more input-output interfaces 1008, and/or one or more operating systems 1005 such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc.

The terminal is used for sending the beam forming signal to a second terminal through a direct link;

Optionally, the beam quality measurement comprises at least one of:

The direct communication link terminal provided in the embodiment of the present invention and the beam recovery method provided in the first embodiment belong to the same inventive concept, and specific implementation manners may refer to the beam recovery methods of the first terminal side and the second terminal side in the first embodiment, which are not repeated here.

As shown in fig. 11, an embodiment of the present invention provides a communication device between terminals of a direct communication link, where the communication device is a base station or a relay node, where the relay node is a third terminal between a first terminal and a second terminal, or an integrated access backhaul IAB base station between the first terminal and the second terminal, the device 1100 includes one or more processors (CPU) 1101 (for example, one or more processors) and a memory 1102, and one or more storage media 1103 (for example, one or more mass storage devices) that store an application 1104 or data 1106. The memory 1102 and the storage medium 1103 may be, among other things, transient storage or persistent storage. The program stored in the storage medium 1103 may include one or more modules (not shown), and each module may include a series of instruction operations on the information processing apparatus. Further, the processor 1101 may be configured to communicate with the storage medium 1103 to execute a series of instruction operations in the storage medium 1103 on the device 1100.

Device 1100 may also include one or more power supplies 1110, one or more wired or wireless network interfaces 1107, one or more input-output interfaces 1108, and/or one or more operating systems 1105, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc.

The device is used for receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal when the second terminal determines that the beam forming fails according to the beam measurement result;

Optionally, the communication device is a base station or a relay node.

The communication device between terminals of a direct communication link according to the embodiment of the present invention is the same as the beam recovery method according to the first embodiment of the present invention, and the specific implementation manner may refer to the beam recovery method of the first terminal side and the beam recovery method of the second terminal side according to the first embodiment of the present invention, which is not repeated here.

As shown in fig. 12, a direct communication link terminal according to an embodiment of the present invention includes:

a measurement unit 1201, configured to receive a beamforming signal sent by a first terminal through a direct link, and perform beam quality measurement on the received beamforming signal;

a selecting unit 1202, configured to send a beam quality measurement result and/or a beam failure indication to a first terminal for beam selection through another carrier link or a non-through link on the through link when it is determined that a beamforming failure occurs according to a beam measurement result, where the another carrier link is a carrier link on the through link except a carrier link occupied by the beamforming signal.

Optionally, the selecting unit 1202 is configured to, when it is determined that both the first terminal and the second terminal are within a network coverage of a base station, send, by the base station, a beam quality measurement result and/or a beam failure indication to the first terminal for beam selection; or

Optionally, the selecting unit 1202 is configured to send the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through a third terminal between the first terminal and the second terminal; or

Optionally, the selecting unit 1202 is configured to send the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection through the frequency range FR1 carrier link on the through link.

Optionally, the selecting unit 1202 is configured to send a beam quality measurement result of a beam to the first terminal, so that the first terminal determines to select the beam for beamforming; or

Optionally, the beam quality measurement in the selection unit 1202 comprises at least one of:

As shown in fig. 13, a direct communication link terminal according to an embodiment of the present invention includes:

a sending unit 1301, configured to send a beamforming signal to a second terminal through a direct link;

an indicating unit 1302, configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through another carrier link or through a non-through link when it is determined that the beamforming failure occurs, where the other carrier link is a carrier link on the through link except a carrier link occupied by the beamforming signal;

and a selecting unit 1303, configured to select a beam according to the beam quality measurement result and/or the beam failure indication, and perform beamforming again by using the selected beam.

Optionally, the indicating unit 1302 is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a base station covering the first terminal and the second terminal; or

Optionally, the indicating unit 1302 is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a third terminal between the first terminal and the second terminal; or

Optionally, the indicating unit 1302 is configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal through a carrier link passing through a frequency range FR1 on the through link.

Optionally, in the indicating unit 1302, if the beam quality measurement result is a beam quality measurement result of a beam, it is determined to select the beam for beamforming; or

Optionally, the beam quality measurement result in the indicating unit 1302 includes at least one of:

As shown in fig. 14, an embodiment of the present invention provides a communication device between terminals of a direct communication link, including:

a receiving unit 1401, configured to receive a beam quality measurement result and/or a beam failure indication sent by the second terminal when determining that beamforming failure occurs according to the beam measurement result;

a sending unit 1402, configured to send the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection.

Optionally, the communication device is a base station or a relay node.

The embodiment of the present invention further provides a computer storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement any one of the methods provided in the second embodiment, and the specific implementation process refers to the description of the foregoing embodiment, and is not repeated here.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on at least one computer-usable storage medium (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for recovering a beam, applied to a second terminal, includes:

2. The method of claim 1, wherein sending the beam quality measurement and/or the beam failure indication to the first terminal for beam selection via the non-direct link comprises:

3. The method of claim 2, wherein sending, by the relay node, the beam quality measurement and/or the beam failure indication to the first terminal for beam selection comprises:

4. The method of claim 1, wherein sending the beam quality measurement and/or the beam failure indication to the first terminal for beam selection via the other carrier links on the through link comprises:

5. The method of claim 1, wherein sending the beam quality measurement and/or the beam failure indication to the first terminal for beam selection comprises:

6. The method of claim 5, wherein the beam quality measurements comprise at least one of:

7. A method for beam recovery, applied to a first terminal, includes:

sending the beam forming signal to a second terminal through a direct link;

8. The method of claim 7, wherein receiving the beam quality measurement and/or beam failure indication sent by the second terminal through the non-through link comprises:

9. The method of claim 8, wherein receiving the beam quality measurement and/or the beam failure indication sent by the second terminal through the relay node between the first terminal and the second terminal comprises:

10. The method of claim 7, wherein receiving the beam quality measurement and/or beam failure indication sent by the second terminal through the other carrier links on the through link comprises:

11. The method of claim 10, wherein performing beam selection based on beam quality measurements and/or beam failure indications comprises:

12. The method of claim 11, wherein the beam quality measurements comprise at least one of:

13. A method for beam recovery applied to a communication node between a first terminal and a second terminal, comprising:

14. The method of claim 13, wherein the communication node is a base station or a relay node.

15. The method of claim 14, wherein the relay node is a third terminal between the first terminal and the second terminal or an integrated access backhaul IAB base station between the first terminal and the second terminal.

16. A direct communication link terminal, characterized in that the terminal comprises:

a memory to store instructions;

17. The terminal according to claim 16, wherein the processor is configured to, when the beam quality measurement result and/or the beam failure indication are sent to the first terminal through the non-through link for beam selection, specifically include:

18. The terminal according to claim 17, wherein the processor is configured to, when the relay node sends the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection, specifically, to include:

19. The terminal according to claim 16, wherein the processor is configured to, when the beam quality measurement result and/or the beam failure indication are sent to the first terminal for beam selection through another carrier link on the through link, specifically include:

20. The terminal according to claim 16, wherein the processor, when performing the sending of the beam quality measurement result and/or the beam failure indication to the first terminal for beam selection, specifically includes:

21. The terminal of claim 20, wherein the beam quality measurements comprise at least one of:

22. A direct communication link terminal, characterized in that the terminal comprises:

a memory to store instructions;

sending the beam forming signal to a second terminal through a direct link;

23. The terminal according to claim 22, wherein the processor is configured to, when receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through a non-through link, specifically include:

24. The terminal according to claim 23, wherein the processor is configured to, when receiving a beam quality measurement result and/or a beam failure indication sent by the second terminal through a relay node between the first terminal and the second terminal, specifically include:

25. The terminal according to claim 22, wherein the processor is configured to, when receiving the beam quality measurement result and/or the beam failure indication sent by the second terminal through the other carrier links on the through link, specifically include:

26. The terminal according to claim 25, wherein the processor is configured to, when performing beam selection according to the beam quality measurement result and/or the beam failure indication, specifically include:

27. The terminal of claim 26, wherein the beam quality measurements comprise at least one of:

28. A device for communicating between terminals of a direct communication link, the device comprising:

a memory to store instructions;

29. The apparatus of claim 28, wherein the communication device is a base station or a relay node.

30. The apparatus of claim 29, wherein the relay node is a third terminal between the first terminal and the second terminal or an integrated access backhaul IAB base station between the first terminal and the second terminal.

31. A direct communication link terminal, comprising:

32. A direct communication link terminal, comprising:

33. A communication device for direct communication link termination, comprising:

34. A computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements a method according to any of claims 1-6, or implements a method according to any of claims 7-12, or implements a method according to any of claims 13-15.