CN108023630B - Information transmission method and related equipment - Google Patents

Information transmission method and related equipment Download PDF

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Publication number
CN108023630B
CN108023630B CN201610974785.1A CN201610974785A CN108023630B CN 108023630 B CN108023630 B CN 108023630B CN 201610974785 A CN201610974785 A CN 201610974785A CN 108023630 B CN108023630 B CN 108023630B
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communication node
sending
transmit
receiving
communication
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CN108023630A (en
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苏昕
高秋彬
拉盖施
陈润华
李传军
王蒙军
李辉
黄秋萍
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection

Abstract

The invention discloses an information transmission method and related equipment, which are used for solving the problems that when the existing beam searching and tracking mechanism is blocked, a system enters a beam searching stage again, and traversing searching is needed to be carried out on a receiving and transmitting beam combination, so that a large amount of system resources are consumed, the system delay is caused, and the system efficiency is reduced. The method comprises the following steps: the method comprises the steps that a first communication node determines that communication link recovery needs to be carried out in the process of sending information to a second communication node through a sending wave beam in a first sending and receiving wave beam combination; transmitting information to the second communication node by adopting a transmitting beam in a second transmitting and receiving beam combination; wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of a second communication node.

Description

Information transmission method and related equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information transmission method and a related device.
Background
In view of the important role of Multiple-Input Multiple-Output (MIMO) technology in improving peak rate and system spectrum utilization, wireless access technology standards such as Long Term Evolution (LTE)/Long Term Evolution-Advanced (LTE-Advanced, LTE-a) are constructed based on MIMO + Orthogonal Frequency Division Multiplexing (OFDM) technology.
The performance gain of the MIMO technology comes from the space freedom degree that can be obtained by the multi-antenna system, so that one of the most important evolution directions of the MIMO technology in the standardization development process is the extension of dimension. In LTE Rel-8, MIMO transmission of up to 4 layers can be supported. Rel-9 emphasizes enhancement of Multi-User MIMO (MU-MIMO) technology, and a maximum of 4 downlink data layers can be supported in MU-MIMO Transmission of Transmission Mode (TM) -8. The Rel-10 further improves the spatial resolution of the Channel State Information by introducing 8-port Channel State Information-Reference Signals (CSI-RS), UE-specific Reference Signals (URS) and multiple granularity codebooks, and further extends the transmission capability of Single-User MIMO (SU-MIMO) to at most 8 data layers.
In a base station Antenna System adopting a conventional Passive Antenna System (PAS) structure, a plurality of Antenna ports are horizontally arranged, each port corresponds to an independent rf-if-baseband channel, and a plurality of vertically-oriented arrays corresponding to each port are connected by rf cables. Therefore, the existing MIMO technology can only optimize the spatial characteristics of each terminal (User Equipment, UE) signal in the horizontal dimension by adjusting the relative amplitude and/or phase between different ports in the horizontal dimension, and can only adopt uniform sector-level beamforming in the vertical dimension. After an Active Antenna System (AAS) technology is introduced into a mobile communication System, a base station Antenna System can obtain a greater degree of freedom in a vertical dimension, and can realize signal optimization at a terminal level in a three-dimensional space.
Based on the above research, standardization and antenna technology development, the industry is further advancing the MIMO technology toward three-dimension and large-scale. Currently, 3GPP is developing Full-dimensional MIMO (FD-MIMO) technology research and standardization work. The academic community has conducted research and test work on MIMO technology based on larger-scale antenna arrays more prospectively. Academic research and preliminary channel actual measurement results show that the large-scale (Massive) MIMO technology can greatly improve the utilization efficiency of the system frequency band and support a larger number of access users. Therefore, Massive MIMO technology is considered by various organizations as one of the most potential physical layer technologies in next-generation mobile communication systems.
Massive MIMO technology requires the use of large-scale antenna arrays. Although maximum spatial resolution and optimal MU-MIMO performance can be achieved with all-digital arrays, this architecture requires a large number of AD/DA conversion devices and a large number of complete rf-baseband processing channels, which can be a significant burden in terms of both equipment cost and baseband processing complexity. The problem is particularly obvious in high frequency band and large bandwidth.
In order to reduce the implementation cost and the device complexity of the Massive MIMO technology, a digital-analog hybrid beamforming technology has been proposed in recent years. The digital-analog hybrid beamforming is to add a first-level analog beamforming on a radio-frequency signal near the front end of an antenna system based on the traditional digital domain beamforming. Analog beamforming enables a relatively coarse matching of the transmitted signal and the channel to be achieved in a relatively simple manner. The dimensionality of equivalent channels formed after analog beam forming is smaller than the actual number of antennas, so that the number of AD/DA conversion devices, the number of digital channels and corresponding baseband processing complexity required after the analog beam forming are greatly reduced. The residual interference of the analog beam forming part can be processed once again in a digital domain, so that the quality of MU-MIMO transmission is ensured.
Compared with full digital beamforming, digital-analog hybrid beamforming is a compromise between performance and complexity, and has a high practical prospect in a system with a high frequency band and a large bandwidth or a large number of antennas.
In the MIMO technology, especially for the MU-MIMO technology, the accuracy of the channel state information that can be obtained by the network side will directly determine the accuracy of precoding/beamforming and the performance of the scheduling algorithm, thereby affecting the overall system performance. Therefore, the acquisition of channel state information has been one of the most central problems in the standardization of MIMO technology.
According to the current LTE signal structure, the reference signals are all inserted in the baseband, so that the channel state required for digital beamforming can be obtained by channel estimation of the reference signals in the baseband signals. However, since the number of equivalent digital channels formed by analog beamforming is less than the number of actual antennas, the dimensionality of the channel matrix obtained by the reference signals is already much lower than the dimensionality of the complete channel matrix experienced by the antenna ends. Thus, the spatial resolution and interference suppression capability achieved by digital beamforming suffers a certain loss. The processing process of the analog beam forming part is closer to one side of the physical antenna, and the MIMO channel of the digital beam forming has higher degree of freedom. However, since there is no way to estimate the reference signal inserted in the baseband, the analog beamforming part cannot directly utilize the channel state information obtained in the digital domain, regardless of Frequency Division Duplexing (FDD) or Time Division Duplexing (TDD).
Therefore, in general, in a digital-analog hybrid beamforming system, the selection of the analog beam can be generally performed only by a search (or training) method. In this process, the transmitting end transmits a set of beams, and the receiving end also performs tentative reception using a set of predetermined beams to determine the optimal transmit-receive beam combination. The method is suitable for scenes with slow propagation environment changes, but in frequency bands with high frequency, a plurality of uncertain factors exist in the signal propagation process. Wherein the blocking effect is a particular problem in high frequency band communication. Specifically, as the frequency band increases, the radius of the fresnel region where energy is most concentrated during the propagation of the radio signal gradually decreases. Therefore, some very common objects in the propagation environment, such as vehicles, human bodies, pillars, etc., can have a strong influence on the high-frequency communication, and even cause communication interruption.
Based on the existing beam searching and tracking mechanism, when blocking occurs, the system will re-enter the beam searching stage, and traversal searching needs to be performed on a large number of potential receiving and transmitting beam combinations, so that a large amount of system resources will be consumed, a large system delay is caused, and the system efficiency is obviously reduced.
Disclosure of Invention
The embodiment of the invention provides an information transmission method and related equipment, which are used for solving the problems that when the existing beam searching and tracking mechanism is blocked, a system enters a beam searching stage again, and traversing searching is needed to be carried out on a receiving and transmitting beam combination, so that a large amount of system resources are consumed, the system delay is caused, and the system efficiency is reduced.
The embodiment of the invention provides the following specific technical scheme:
in a first aspect, an embodiment of the present invention provides an information transmission method, including:
the method comprises the steps that a first communication node determines that communication link recovery needs to be carried out in the process of sending information to a second communication node through a sending wave beam in a first sending and receiving wave beam combination;
the first communication node adopts a transmitting beam in a second transmitting and receiving beam combination to transmit information to the second communication node;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of a second communication node.
In a possible embodiment, the determining, by the first communication node, that communication link recovery is required includes:
the first communication node determines that the number of beams capable of communicating in the first sending and receiving beam group is smaller than a preset threshold according to the notification of the second communication node or the network side, and determines that communication link recovery is required; or
The first communication node monitors and obtains that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and then the communication link needs to be recovered; or
The first communication node determines that the communication quality between the first communication node and the second communication node is lower than a preset threshold according to the notification of the second communication node or the network side, and then determines that communication link recovery is required; or
And the first communication node determines that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and then determines that communication link recovery is required.
In a possible implementation, before the first communication node transmits information to the second communication node through the transmission beam in the first transmission and reception beam combination, the method further includes:
the first communication node determines the set of transmit receive beam combinations, which includes at least two transmit receive beam combinations.
In a possible embodiment, the method further comprises:
and the first communication node updates the set of the sending and receiving beam combinations by taking a preset duration as a period.
In a possible embodiment, before the first communication node transmits information to the second communication node by using a transmission beam in a second transmission and reception beam combination after determining that the communication link needs to be recovered, the method further includes:
the first communication node determines to switch to an alternative transmit receive beam combination to transmit information to the second communication node.
In a second aspect, an embodiment of the present invention provides an information transmission method, including:
the second communication node determines that communication link recovery is needed in the process of receiving the information sent by the first communication node through the receiving wave beam in the first sending wave beam combination;
the second communication node receives the information sent by the first communication node by adopting a receiving beam in a second sending and receiving beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of a second communication node.
In a possible embodiment, the determining, by the second communication node, that the communication link recovery is required includes:
the second communication node monitors and obtains that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and then the communication link needs to be recovered; or
And the second communication node determines that the communication quality between the second communication node and the first communication node is lower than a preset threshold through monitoring, and then determines that communication link recovery is required.
In a possible implementation, before the second communication node receives information transmitted by the first communication node through the receive beam in the first transmit and receive beam combination, the method further includes:
the second communication node determines a set of the transmit receive beam combinations, where the set of transmit receive beam combinations includes at least two transmit receive beam combinations.
In a possible embodiment, the method further comprises:
and the second communication node updates the set of the sending and receiving beam combinations by taking a preset time length as a period.
In a possible embodiment, the determining, by the second communications node, the set of transmit and receive beam combinations includes:
the second communication node determines multiple groups of sending and receiving beam combinations between a transmitter of the first communication node and a receiver of the second communication node, sorts the multiple groups of sending and receiving beam combinations according to the sequence of communication quality from high to low, and takes the top N groups of sending and receiving beam combinations after sorting as a set of the sending and receiving beam combinations, wherein N is a positive integer greater than or equal to 2.
In a possible implementation manner, after the second communication node determines that the communication link needs to be recovered, before receiving the information sent by the first communication node by using the receiving beam in the second sending and receiving beam combination, the method further includes:
the second communication node determines to switch to an alternative sending and receiving beam combination to receive the information sent by the first communication node.
In a third aspect, an embodiment of the present invention provides a communication node, including:
the processing module is used for determining that communication link recovery needs to be carried out in the process of sending information to the second communication node through the sending wave beam in the first sending and receiving wave beam combination;
a sending module, configured to send information to the second communication node by using a sending beam in a second sending and receiving beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the communication node and a receiver of a second communication node.
In a possible embodiment, the processing module is specifically configured to:
determining that the number of beams capable of communicating in the first sending and receiving beam group is smaller than a preset threshold according to the notification of the second communication node or the network side, and determining that communication link recovery is required; or
Monitoring to obtain that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and determining that communication link recovery is required; or
Determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold according to the notification of the second communication node or the network side, and determining that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible embodiment, the processing module is further configured to:
before the sending module sends information to a second communication node through a sending beam in a first sending and receiving beam combination, determining a set of the sending and receiving beam combinations, wherein the set of the sending and receiving beam combinations comprises at least two sending and receiving beam combinations.
In a possible embodiment, the processing module is further configured to:
and updating the set of the sending and receiving beam combinations by taking a preset duration as a period.
In a possible embodiment, the processing module is further configured to:
after the processing module determines that communication link recovery is required, before the transmitting module transmits information to the second communication node by using a transmission beam in a second transmission and reception beam combination, determining to switch to an alternative transmission and reception beam combination to transmit information to the second communication node.
In a fourth aspect, an embodiment of the present invention provides a communication node, including:
the processing module is used for determining that communication link recovery needs to be carried out in the process of receiving information sent by the first communication node through the receiving wave beam in the first sending wave beam combination;
a receiving module, configured to receive information sent by the first communication node by using a receiving beam in a second sending and receiving beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of the communication node.
In a possible embodiment, the processing module is specifically configured to:
monitoring to obtain that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and determining that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible embodiment, the processing module is further configured to:
before the sending module receives information sent by a first communication node through a receiving beam in a first sending and receiving beam combination, determining a set of the sending and receiving beam combinations, wherein the set of the sending and receiving beam combinations comprises at least two sending and receiving beam combinations.
In a possible embodiment, the processing module is further configured to:
and updating the set of the sending and receiving beam combinations by taking a preset duration as a period.
In a possible embodiment, the processing module is specifically configured to:
determining multiple groups of sending and receiving beam combinations between a transmitter of the first communication node and a receiver of the communication node, sequencing the multiple groups of sending and receiving beam combinations according to the sequence from high communication quality to low communication quality, and taking the top N groups of sending and receiving beam combinations after sequencing as a set of the sending and receiving beam combinations, wherein N is a positive integer greater than or equal to 2.
In a possible embodiment, the processing module is further configured to:
after the processing module determines that communication link recovery is required, before the receiving module receives information sent by the first communication node by using a receiving beam in a second sending and receiving beam combination, determining to switch to an alternative sending and receiving beam combination to receive the information sent by the first communication node.
In a fifth aspect, an embodiment of the present invention provides a communication node, including a processor, a memory, and a transmitter, where the transmitter is configured to send data under control of the processor, the memory stores a preset program, and the processor reads the program in the memory and executes the following processes according to the program:
determining that communication link recovery is needed in the process of indicating a transmitter to transmit information to a second communication node through a transmitting beam in a first transmitting and receiving beam combination;
transmitting information to the second communication node through a transmitter using a transmit beam in a second transmit receive beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the communication node and a receiver of a second communication node.
In a possible implementation manner, the processor determines, according to the notification of the second communication node or the network side, that the number of beams capable of performing communication in the first transmit receive beam group is smaller than a preset threshold, and determines that communication link recovery is required; or
Monitoring to obtain that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and determining that communication link recovery is required; or
Determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold according to the notification of the second communication node or the network side, and determining that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible embodiment, before instructing the transmitter to transmit information to the second communication node through a transmission beam in the first transmission and reception beam combination, the processor determines the set of transmission and reception beam combinations, where the set of transmission and reception beam combinations includes at least two transmission and reception beam combinations.
In a possible embodiment, the processor updates the set of transmit and receive beam combinations with a preset duration as a period.
In a possible embodiment, after determining that the communication link needs to be recovered, the processor determines to switch to an alternative transmit-receive beam combination to transmit information to the second communication node before instructing the transmitter to transmit information to the second communication node using a transmit beam in the second transmit-receive beam combination.
Based on the same inventive concept, an embodiment of the present invention provides a communication node, including a processor, a memory, and a receiver, where the receiver is configured to send data under control of the processor, the memory stores a preset program, the processor reads the program in the memory, and executes the following processes according to the program:
in the process of indicating a receiver to receive information sent by a first communication node through a receiving beam in a first sending beam combination, determining that communication link recovery is needed;
instructing a receiver to receive information transmitted by the first communication node by using a receiving beam in a second transmitting and receiving beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of the communication node.
In a possible implementation manner, if the number of beams capable of performing communication in the first transmit and receive beam group is smaller than a preset threshold, the processor determines that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible implementation, before instructing the receiver to receive information transmitted by the first communication node through a receive beam of the first transmit and receive beam combination, the processor determines the set of transmit and receive beam combinations, where the set of transmit and receive beam combinations includes at least two transmit and receive beam combinations.
In a possible embodiment, the processor updates the set of transmit and receive beam combinations with a preset duration as a period.
In a possible implementation manner, the processor determines multiple sets of transmit and receive beam combinations between the transmitter of the first communication node and the receiver of the communication node, and sorts the multiple sets of transmit and receive beam combinations in order of high communication quality, and uses the top N sorted sets of transmit and receive beam combinations as the set of transmit and receive beam combinations, where N is a positive integer greater than or equal to 2.
In a possible embodiment, after determining that the communication link needs to be recovered, the processor determines to switch to an alternative transmit-receive beam combination to receive the information transmitted by the first communication node before instructing the receiver to receive the information transmitted by the first communication node using the receive beam in the second transmit-receive beam combination.
Based on the above technical solution, in the embodiment of the present invention, when it is determined that a communication link needs to be recovered in a process of sending information to a second communication node through a sending beam of a first sending and receiving beam combination, a sending beam of a second sending and receiving beam combination in a set of candidate sending and receiving beam combinations is used to send information to the second communication node, so that a system is prevented from re-accessing a beam search stage when communication link recovery is needed, and only a second sending and receiving beam combination is directly selected from the set of candidate sending and receiving beam combinations, and traversal search for the sending and receiving beam combinations is not needed, which reduces consumption of system resources, avoids system delay caused by re-performing beam search, and improves system efficiency.
Drawings
Fig. 1 is a schematic diagram of a process of information transmission performed by a transmitting end in an embodiment of the present invention;
fig. 2 is a schematic diagram of a process of information transmission performed by a receiving end in the embodiment of the present invention;
FIG. 3 is a diagram illustrating a process for determining a set of transmit and receive beam combinations according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a communication node according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another communication node according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another communication node according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another communication node according to an embodiment of the present invention.
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.
In order to solve the problems that in the existing beam searching and tracking mechanism, when blocking occurs, a system re-enters a beam searching stage, traversing searching needs to be carried out on a receiving and transmitting beam combination, a large amount of system resources are consumed, system delay is caused, and system efficiency is reduced, the embodiment of the invention provides a channel transmission method. The core idea of the method is as follows: in the beam searching stage, a plurality of candidate transmitting and receiving beam combinations are recorded simultaneously, when the communication link recovery is determined to be needed, a spare transmitting and receiving beam combination is selected from the recorded candidate transmitting and receiving beam combinations, and the selected transmitting and receiving beam combination is adopted for information transmission.
It should be noted that, in the embodiment of the present invention, one transmission/reception beam combination includes a combination of a transmission beam and a reception beam, and the number of the combinations of the transmission beam and the reception beam included is at least one.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the first embodiment of the present invention, as shown in fig. 1, a specific process for performing information transmission as a transmitting-end communication node is as follows:
step 101: and the first communication node determines that the communication link needs to be recovered in the process of transmitting information to the second communication node through the transmission beam in the first transmission and reception beam combination.
In a specific embodiment, before the first communication node transmits information to the second communication node through a transmission beam in the first transmission and reception beam combination, it needs to determine a set of transmission and reception beam combinations, where the set of transmission and reception beam combinations includes at least two transmission and reception beam combinations.
Preferably, the first communication node updates the set of transmit and receive beam combinations periodically with a preset duration.
Specifically, specific implementations of the first communication node determining that the communication link needs to be recovered include, but are not limited to, the following:
first, the first communication node determines, according to the notification of the second communication node or the network side, that the number of beams capable of communicating in the first transmit receive beam group is smaller than a preset threshold, and then determines that communication link recovery is required.
In a specific implementation, the number of beams capable of performing communication in the first transmit-receive beam group may be monitored by the second communication node serving as the receiving end, the second communication node transmits the monitoring result to the network side or the first communication node serving as the transmitting end, and the network side or the first communication node determines whether to trigger the communication link recovery. For example, the network side or the first communication node determines whether the number of beams capable of performing communication in the first transmit-receive beam group sent by the second communication node is smaller than a preset threshold, and if so, triggers a communication link recovery process.
In another specific implementation, the number of beams capable of performing communication in the first transmit-receive beam group may be monitored by a second communication node serving as a receiving end, and if the second communication node determines that the number of beams capable of performing communication is smaller than a preset threshold, the second communication node reports a monitoring result to a network side or a first communication node, and the network side or the first communication node determines whether communication link recovery is required.
In another specific implementation, the number of beams capable of performing communication in the first transmit-receive beam group may be monitored by a second communication node serving as a receiving end, and if it is determined that the number of beams capable of performing communication is smaller than a preset threshold, the second communication node reports a monitoring result to another communication node that maintains communication with the second communication node, and reports the monitoring result to the first communication node through a communication link between a transmitter of the communication node and the first communication node.
Secondly, the first communication node monitors and obtains that the number of the beams which can be communicated in the first sending and receiving beam group is smaller than a preset threshold, and then the communication link needs to be recovered.
Specifically, the first communication node may monitor the number of beams capable of performing communication in the first transmit receive beam group by using channel reciprocity, and if it is determined that the number of beams capable of performing communication in the first transmit receive beam group is smaller than a preset threshold, it is determined that the communication link needs to be recovered.
Thirdly, the first communication node determines that the communication quality between the first communication node and the second communication node is lower than a preset threshold according to the notification of the second communication node or the network side, and then determines that the communication link needs to be recovered.
In a specific implementation, the communication quality between the first communication node and the second communication node may be monitored by the second communication node serving as the receiving end, the second communication node sends the monitoring result to the network side or the first communication node serving as the transmitting end, and the network side or the first communication node determines whether to trigger the communication link recovery. For example, the network side or the first communication node determines whether the communication quality between the first communication node and the second communication node is lower than a preset threshold, and if so, triggers the process of communication link recovery.
In another specific implementation, the communication quality between the first communication node and the second communication node may be monitored by the second communication node serving as the receiving end, and if the second communication node determines that the communication quality between the first communication node and the second communication node is lower than the preset threshold, the second communication node reports the monitoring result to the network side or the first communication node, and the network side or the first communication node determines whether the communication link needs to be recovered.
In another specific implementation, the communication quality between the first communication node and the second communication node may be monitored by the second communication node serving as the receiving end, and if the second communication node determines that the communication quality between the first communication node and the second communication node is lower than the preset threshold, the second communication node reports the monitoring result to another communication node that is in communication with the second communication node, and reports the monitoring result to the first communication node through a communication link between a transmitter of the communication node and the first communication node.
Fourthly, the first communication node determines that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and then determines that communication link recovery is needed.
Specifically, the first communication node may monitor the communication quality between the first communication node and the second communication node by using channel reciprocity, and if it is determined that the communication quality is lower than a preset threshold, it is determined that communication link recovery is required.
The preset threshold in the above several implementation manners may be preset, may also be indicated by the network side, may also be determined by the first communication node or the second communication node, and may be determined by negotiation among the network side, the first communication node, and the second communication node.
In the above several implementation manners, if the network side or the second communication node determines that the notification that needs to trigger the communication link recovery may be sent to the first communication node through the low frequency coverage access system or other communication nodes that can send information to the first communication node.
Step 102: and the first communication node adopts the transmission beam in the second transmission and reception beam combination to transmit information to the second communication node.
Wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of a second communication node.
In a specific implementation, the first communication node may randomly select one transmission and reception beam combination other than the first transmission and reception beam combination from the set of transmission and reception beam combinations as the second transmission and reception beam combination. Alternatively, the first communication node may select, as the second transmission/reception beam combination, a first transmission/reception beam combination that is ordered after the first transmission/reception beam combination in accordance with an order of arrangement of the transmission/reception beam combinations, where the transmission/reception beam combinations of the set of transmission/reception beam combinations have been arranged in order of preference.
In a specific embodiment, after determining that a communication link needs to be recovered, if it is determined that the first communication node is configured to switch to an alternative transmit/receive beam combination to transmit information to the second communication node, the first communication node transmits information to the second communication node by using a transmit beam in the second transmit/receive beam combination.
In a specific implementation, the first communication node may be configured to switch to an alternative transmit/receive beam combination to transmit information to the second communication node, and may be configured to trigger a process of updating the set of transmit/receive beam combinations between the first communication node and the second communication node when a preset update period comes, and may be configured to directly trigger a process of updating the set of transmit/receive beam combinations between the first communication node and the second communication node.
In the second embodiment of the present invention, as shown in fig. 2, a specific process of information transmission by a communication node as a receiving end is as follows:
step 201: and the second communication node determines that the communication link needs to be recovered in the process of receiving the information sent by the first communication node through the receiving beam in the first sending beam combination.
In a specific embodiment, before the second communication node receives information transmitted by the first communication node through a receive beam in the first transmit receive beam combination, the set of transmit receive beam combinations is determined, where the set of transmit receive beam combinations includes at least two transmit receive beam combinations.
Preferably, the second communication node updates the set of transmit and receive beam combinations with a preset duration as a period.
In a specific implementation, the second communication node determines that the communication link needs to be recovered, which includes but is not limited to the following implementation manners:
firstly, a second communication node monitors and obtains that the number of beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and then the communication link needs to be recovered; or
Secondly, the second communication node determines that the communication quality between the second communication node and the first communication node is lower than a preset threshold through monitoring, and then determines that communication link recovery is needed.
Step 202: and the second communication node receives the information sent by the first communication node by adopting the receiving beam in the second sending and receiving beam combination.
Wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of a second communication node.
Specifically, the second communication node determines multiple sets of transmit and receive beam combinations between the transmitter of the first communication node and the receiver of the second communication node, ranks the multiple sets of transmit and receive beam combinations in order of high communication quality, and takes the top N sets of transmit and receive beam combinations after ranking as the set of transmit and receive beam combinations, where N is a positive integer greater than or equal to 2.
In a specific embodiment, after determining that communication link recovery is required, the second communication node determines that the second communication node is configured to switch to an alternative transmit/receive beam combination to receive information transmitted by the first communication node, and then receives the information transmitted by the first communication node by using a receive beam in the second transmit/receive beam combination.
In a specific implementation manner, in the first and second embodiments, the determination process of the set of transmit and receive beam combinations is as shown in fig. 3, and specifically as follows:
step 301: and the first communication node as a transmitting end carries out beam switching transmission.
Specifically, the system presets an analog beam set at the transmitting end, and the transmitting end and the receiving end respectively learn a correspondence between a number of each beam in the analog beam set and a characteristic of each beam, where the characteristic of a beam may be a resource occupied by the beam.
The transmitting end traverses each beam in the analog beam set by using a beam scanning method, for example, the beam scanning of the transmitting end may use any one of the following methods:
first, the time division method is that the first terminal respectively transmits each beam in the analog beam set at different time, and stores the corresponding relationship between the transmission time and the number of the transmission beam.
Second, the frequency division method is that the first terminal transmits each beam in the analog beam set on different subcarrier sets, and stores the corresponding relationship between the subcarrier sets and the numbers of the transmitted beams.
And thirdly, a time-frequency combination mode is adopted, namely the first terminal respectively transmits each wave beam in the analog wave beam set on different time and subcarrier set combinations, and the corresponding relation between the time and subcarrier set combination and the number of the transmitted wave beam is stored.
Step 302: and the second communication node as the receiving end carries out beam switching reception.
Specifically, the receiving end receives the beam sent by the transmitting end in a beam scanning manner, and the beam scanning of the receiving end may adopt any one of the following manners, corresponding to the beam scanning manner of the transmitting end:
first, the time division manner corresponds to a first beam scanning manner of the transmitting end, that is, the receiving end receives with different beams in the analog beam set at different times.
The second, frequency division manner, corresponds to a second beam scanning manner of the transmitting end, that is, the receiving end receives with different beams in the analog beam set on different subcarrier sets respectively.
And thirdly, the time-frequency combination mode corresponds to a third beam scanning mode of the transmitting end, namely the receiving end respectively receives different beams in the analog beam set at different time and combinations of the subcarrier sets.
Step 303: and the second communication node as the receiving end performs beam selection.
Specifically, the receiving end finds various combinations of the transmit beam and the receive beam through the step 302, and prefers the combinations of the transmit beam and the receive beam. For example, the receiving end calculates the channel quality when performing communication using each combination of the transmitting beam and the receiving beam, and sorts the combinations of the transmitting beam and the receiving beam according to the signal-to-noise maximization principle, and preferably selects N combinations of the transmitting beam and the receiving beam, where N is a positive integer greater than or equal to 2.
Specifically, the receiving end sorts the combination of the transmission beam and the reception beam, and then the rootDividing the combination of the transmit beam and the receive beam into N sets, denoted as Φ, according to the ordering1,...,ΦNOf set phin(1. ltoreq. N. ltoreq.N) contains the most preferred InAnd a beam. Phi1,...,ΦNCan satisfy the nesting relation, i.e.
Figure BDA0001144451780000171
The method comprises the steps that one set corresponds to a set of sending and receiving beam combinations, at least two sending and receiving beam combinations are contained in one set, one sending and receiving beam combination comprises the sending beam and the receiving beam, and the number of the contained sending beam and receiving beam combinations is at least one.
The receiving end determines the number of the preferred transmitting beam according to the combination of the preferred transmitting beam and the preferred receiving beam and the corresponding relation between the characteristics of the transmitting beam and the number of the transmitting beam, and records the number of the preferred receiving beam.
Step 304: the second communication node as the receiving end will be assembled
Figure BDA0001144451780000172
The number corresponding to the transmission beam in (1) is notified to the transmitting end.
In the embodiment of the present invention, according to a preset period or a trigger principle, steps 301 to 304 are repeatedly executed to update the combination of the transmit beam and the receive beam.
Based on the same inventive concept, the embodiment of the present invention further provides a communication node, and for specific implementation of the communication node, reference may be made to related description of the first communication node in the method embodiment, and repeated details are omitted, as shown in fig. 4, the communication node mainly includes:
a processing module 401, configured to determine that communication link recovery needs to be performed in a process of sending information to a second communication node through a sending beam in a first sending and receiving beam combination;
a sending module 402, configured to send information to the second communication node by using a sending beam in a second sending and receiving beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the communication node and a receiver of a second communication node.
In a possible embodiment, the processing module is specifically configured to:
determining that the number of beams capable of communicating in the first sending and receiving beam group is smaller than a preset threshold according to the notification of the second communication node or the network side, and determining that communication link recovery is required; or
Monitoring to obtain that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and determining that communication link recovery is required; or
Determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold according to the notification of the second communication node or the network side, and determining that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible embodiment, the processing module is further configured to:
before the sending module sends information to a second communication node through a sending beam in a first sending and receiving beam combination, determining a set of the sending and receiving beam combinations, wherein the set of the sending and receiving beam combinations comprises at least two sending and receiving beam combinations.
In a possible embodiment, the processing module is further configured to:
and updating the set of the sending and receiving beam combinations by taking a preset duration as a period.
In a possible embodiment, the processing module is further configured to:
after the processing module determines that communication link recovery is required, before the transmitting module transmits information to the second communication node by using a transmission beam in a second transmission and reception beam combination, determining to switch to an alternative transmission and reception beam combination to transmit information to the second communication node.
Based on the same inventive concept, another communication node is provided in the embodiments of the present invention, and for specific implementation of the communication node, reference may be made to related description of the second communication node in the method embodiments, and repeated details are not repeated, as shown in fig. 5, the communication node mainly includes:
a processing module 501, configured to determine that communication link recovery needs to be performed in a process of receiving information sent by a first communication node through a receive beam in a first transmit beam combination;
a receiving module 502, configured to receive information sent by the first communication node by using a receiving beam in a second sending and receiving beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of the communication node.
In a possible embodiment, the processing module is specifically configured to:
monitoring to obtain that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and determining that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible embodiment, the processing module is further configured to:
before the sending module receives information sent by a first communication node through a receiving beam in a first sending and receiving beam combination, determining a set of the sending and receiving beam combinations, wherein the set of the sending and receiving beam combinations comprises at least two sending and receiving beam combinations.
In a possible embodiment, the processing module is further configured to:
and updating the set of the sending and receiving beam combinations by taking a preset duration as a period.
In a possible embodiment, the processing module is specifically configured to:
determining multiple groups of sending and receiving beam combinations between a transmitter of the first communication node and a receiver of the communication node, sequencing the multiple groups of sending and receiving beam combinations according to the sequence from high communication quality to low communication quality, and taking the top N groups of sending and receiving beam combinations after sequencing as a set of the sending and receiving beam combinations, wherein N is a positive integer greater than or equal to 2.
In a possible embodiment, the processing module is further configured to:
after the processing module determines that communication link recovery is required, before the receiving module receives information sent by the first communication node by using a receiving beam in a second sending and receiving beam combination, determining to switch to an alternative sending and receiving beam combination to receive the information sent by the first communication node.
Based on the same inventive concept, the embodiment of the present invention further provides a communication node, and the specific implementation of the communication node may refer to related descriptions of the method embodiment section on the first communication node, and repeated descriptions are omitted, as shown in fig. 6, the communication node mainly includes a processor 601, a memory 602, and a transmitter 603, where the transmitter 603 is configured to transmit data under the control of the processor 601, a preset program is stored in the memory 602, the processor 601 reads the program in the memory 602, and performs the following processes according to the program:
determining that communication link recovery is needed in the process of indicating a transmitter to transmit information to a second communication node through a transmitting beam in a first transmitting and receiving beam combination;
transmitting information to the second communication node through a transmitter using a transmit beam in a second transmit receive beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the communication node and a receiver of a second communication node.
In a possible implementation manner, the processor determines, according to the notification of the second communication node or the network side, that the number of beams capable of performing communication in the first transmit receive beam group is smaller than a preset threshold, and determines that communication link recovery is required; or
Monitoring to obtain that the number of the beams which can be communicated in the first sending and receiving beam group is less than a preset threshold, and determining that communication link recovery is required; or
Determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold according to the notification of the second communication node or the network side, and determining that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible embodiment, before instructing the transmitter to transmit information to the second communication node through a transmission beam in the first transmission and reception beam combination, the processor determines the set of transmission and reception beam combinations, where the set of transmission and reception beam combinations includes at least two transmission and reception beam combinations.
In a possible embodiment, the processor updates the set of transmit and receive beam combinations with a preset duration as a period.
In a possible embodiment, after determining that the communication link needs to be recovered, the processor determines to switch to an alternative transmit-receive beam combination to transmit information to the second communication node before instructing the transmitter to transmit information to the second communication node using a transmit beam in the second transmit-receive beam combination.
Based on the same inventive concept, another communication node is provided in the embodiments of the present invention, and for specific implementation of the communication node, reference may be made to related descriptions of the method embodiments about the second communication node, and repeated descriptions are omitted, as shown in fig. 7, the communication node mainly includes a processor 701, a memory 702, and a receiver 703, where the receiver 703 is configured to send data under the control of the processor 701, a preset program is stored in the memory 702, the processor 701 reads the program in the memory 702, and executes the following processes according to the program:
in the process of indicating a receiver to receive information sent by a first communication node through a receiving beam in a first sending beam combination, determining that communication link recovery is needed;
instructing a receiver to receive information transmitted by the first communication node by using a receiving beam in a second transmitting and receiving beam combination;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of the communication node.
In a possible implementation manner, if the number of beams capable of performing communication in the first transmit and receive beam group is smaller than a preset threshold, the processor determines that communication link recovery is required; or
And determining that the communication quality between the first communication node and the second communication node is lower than a preset threshold through monitoring, and determining that communication link recovery is required.
In a possible implementation, before instructing the receiver to receive information transmitted by the first communication node through a receive beam of the first transmit and receive beam combination, the processor determines the set of transmit and receive beam combinations, where the set of transmit and receive beam combinations includes at least two transmit and receive beam combinations.
In a possible embodiment, the processor updates the set of transmit and receive beam combinations with a preset duration as a period.
In a possible implementation manner, the processor determines multiple sets of transmit and receive beam combinations between the transmitter of the first communication node and the receiver of the communication node, and sorts the multiple sets of transmit and receive beam combinations in order of high communication quality, and uses the top N sorted sets of transmit and receive beam combinations as the set of transmit and receive beam combinations, where N is a positive integer greater than or equal to 2.
In a possible embodiment, after determining that the communication link needs to be recovered, the processor determines to switch to an alternative transmit-receive beam combination to receive the information transmitted by the first communication node before instructing the receiver to receive the information transmitted by the first communication node using the receive beam in the second transmit-receive beam combination.
Where in fig. 6-7 the processors, memory and receiver/transmitter are connected by a bus, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by a processor and various circuits of memory represented by a memory being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transmitter/receiver provides a means for communicating with various other apparatus over a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory may store data used by the processor in performing operations.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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 invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An information transmission method, comprising:
a first communication node determines a set of transmitting and receiving beam combinations, wherein the set of transmitting and receiving beam combinations comprises at least two transmitting and receiving beam combinations;
in the process that the first communication node sends information to a second communication node through a sending beam in a first sending and receiving beam combination, the first communication node determines that the number of beams capable of conducting communication in the first sending and receiving beam combination is smaller than a preset threshold according to the notification of the second communication node, or the first communication node monitors that the number of beams capable of conducting communication in the first sending and receiving beam combination is smaller than the preset threshold, and then determines that communication link recovery is needed;
the first communication node adopts a transmitting beam in a second transmitting and receiving beam combination to transmit information to the second communication node;
the first communication node updates the set of the sending and receiving wave beam combinations by taking a preset duration as a period;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of the second communication node.
2. The method of claim 1, wherein after the first communication node determines that communication link recovery is required, and before transmitting information to the second communication node using a transmit beam of a second transmit receive beam combination, the method further comprises:
the first communication node determines to switch to an alternative transmit receive beam combination to transmit information to the second communication node.
3. An information transmission method, comprising:
the second communication node determines a set of transmitting and receiving beam combinations, wherein the set of transmitting and receiving beam combinations comprises at least two transmitting and receiving beam combinations;
in the process that a second communication node receives information sent by a first communication node through a receiving beam in a first sending and receiving beam combination, if the number of beams which can be communicated in the first sending and receiving beam combination is smaller than a preset threshold, the communication link needs to be recovered;
the second communication node receives the information sent by the first communication node by adopting a receiving beam in a second sending and receiving beam combination;
the second communication node updates the set of the sending and receiving wave beam combinations by taking a preset time length as a period; wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of the second communication node.
4. The method of claim 3, wherein the second communication node determining the set of transmit receive beam combinations comprises:
the second communication node determines multiple groups of sending and receiving beam combinations between a transmitter of the first communication node and a receiver of the second communication node, sorts the multiple groups of sending and receiving beam combinations according to the sequence of communication quality from high to low, and takes the top N groups of sending and receiving beam combinations after sorting as a set of the sending and receiving beam combinations, wherein N is a positive integer greater than or equal to 2.
5. The method of claim 3 or 4, wherein after the second communication node determines that communication link recovery is required, before receiving the information transmitted by the first communication node using the receive beam of the second transmit and receive beam combination, the method further comprises:
the second communication node determines to switch to an alternative sending and receiving beam combination to receive the information sent by the first communication node.
6. A communications node, comprising:
the processing module is used for monitoring and acquiring that the number of beams capable of carrying out communication in a first sending and receiving beam combination is smaller than a preset threshold in the process of sending information to a second communication node through a sending beam in the first sending and receiving beam combination, and then determining that the communication link needs to be recovered;
a sending module, configured to send information to the second communication node by using a sending beam in a second sending and receiving beam combination;
the processing module is further configured to determine a set of transmit and receive beam combinations before the transmitting module transmits information to a second communication node through a transmit beam in a first transmit and receive beam combination, where the set of transmit and receive beam combinations includes at least two transmit and receive beam combinations;
the processing module is further configured to update the set of the sending and receiving beam combinations with a preset duration as a period;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the communication node and a receiver of the second communication node.
7. The communication node of claim 6, wherein the processing module is further to:
after the processing module determines that communication link recovery is required, before the transmitting module transmits information to the second communication node by using a transmission beam in a second transmission and reception beam combination, determining to switch to an alternative transmission and reception beam combination to transmit information to the second communication node.
8. A communications node, comprising:
the processing module is configured to, in a process of receiving information sent by a first communication node through a receive beam in a first transmit-receive beam combination, monitor that the number of beams that can be communicated in the first transmit-receive beam combination is smaller than a preset threshold, and determine that a communication link needs to be recovered;
a receiving module, configured to receive information sent by the first communication node by using a receiving beam in a second sending and receiving beam combination;
the processing module is further configured to determine a set of transmit and receive beam combinations before the transmitting module receives information transmitted by the first communication node through a receive beam in the first transmit and receive beam combination, where the set of transmit and receive beam combinations includes at least two transmit and receive beam combinations;
the processing module is further configured to update the set of the sending and receiving beam combinations with a preset duration as a period;
wherein the first transmit receive beam combination and the second transmit receive beam combination belong to a set of candidate transmit receive beam combinations between a transmitter of the first communication node and a receiver of the communication node.
9. The communication node of claim 8, wherein the processing module is specifically configured to:
determining multiple groups of sending and receiving beam combinations between a transmitter of the first communication node and a receiver of the communication node, sequencing the multiple groups of sending and receiving beam combinations according to the sequence from high communication quality to low communication quality, and taking the top N groups of sending and receiving beam combinations after sequencing as a set of the sending and receiving beam combinations, wherein N is a positive integer greater than or equal to 2.
10. The communication node of claim 8 or 9, wherein the processing module is further to:
after the processing module determines that communication link recovery is required, before the receiving module receives information sent by the first communication node by using a receiving beam in a second sending and receiving beam combination, determining to switch to an alternative sending and receiving beam combination to receive the information sent by the first communication node.
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