CN115396976A - A communication method, link selection method, user equipment and network side equipment - Google Patents

Abstract

The invention provides a communication method, a link selection method, user equipment and network side equipment, belonging to the technical field of communication, wherein the communication method is used for the first user equipment and comprises the following steps: measuring link quality between first user equipment and network side equipment and link quality between the first user equipment and second equipment through a first link and a second link respectively; and carrying out communication by utilizing an operating link selected from the first link and the second link, wherein the operating link is determined jointly according to the measured different link quality metrics and the qualification judgment standard of the link quality metrics corresponding to the first link and the second link respectively. The invention can enable the user equipment to select the working link with higher reliability.

Description

A communication method, link selection method, user equipment and network side equipment

technical field

The present invention relates to the field of communication technology, in particular to a communication method, a link selection method, user equipment and network side equipment.

Background technique

With the advancement of communication technology, the current user equipment (User Equipment, UE) supports the communication between the user equipment or user-like equipment through the first link (which can be called Uu link) between the base station and the user equipment. The second link (which may be referred to as a side link, or a Sidelink link, or an SL link) performs communication.

For the above-mentioned user equipment that supports communication through the first link and the second link, when performing communication services, it is necessary to select a working link for communication between the first link and the second link.

In related technologies, the criteria for user equipment to select a working link may be downlink and/or uplink, and the operation of selecting a working link may be an autonomous decision of the user equipment, or a network decision assisted by the user equipment, which are described as follows.

The criterion for the user equipment to select a working link may be an uplink optimal principle, and then the judgment parameter of the link quality metric of the user equipment on the SL link may include at least one of the following parameters: the channel state information ( Channel State Information, CSI), the reference signal received power (ReferenceSignal Received Power, RSRP) of the user equipment at the receiving end, and the number of antennas of the user equipment at the receiving end, etc.; the link quality judgment parameters of the user equipment on the Uu link may include the following parameters At least one of: RSRP and CSI of a Sounding Reference Signal (Sounding Reference Signal, SRS).

The criterion for the user equipment to select the working link may be the downlink optimal principle, and the judgment parameters of the link quality measurement of the user equipment on the SL link may include at least one of the following parameters: side link CSI and receiving end user equipment RSRP; the link quality judgment parameters of the user equipment on the Uu link may include at least one of the following parameters: Uu link CSI and RSRP.

However, the working link selected by the above solution cannot guarantee the normal operation of the user equipment. The main reason is that there are often differences in the transmission power and the number of antennas between the base station equipment and similar terminal equipment. It is difficult to ensure that the link selection is sufficiently reliable. Often, when the link is selected based on the optimal uplink, the downlink may become worse; and when the link is selected based on the optimal downlink, the uplink may become worse.

Contents of the invention

The present invention provides a communication method, a link selection method, user equipment and network side equipment, enabling the user equipment to select a working link with higher reliability.

In order to solve the problems of the technologies described above, the present invention is achieved in that:

In a first aspect, the present invention provides a communication method for a first user equipment, where the communication method includes:

measuring the link quality between the first user equipment and the network side equipment and the link quality between the first user equipment and the second equipment through the first link and the second link respectively;

Communication is performed by using a working link selected from the first link and the second link, and the working link is based on the measured link quality and the corresponding link quality of the first link and the second link respectively The eligibility criteria are jointly determined.

In a second aspect, the present invention provides a link selection method for a network side device, and the link selection method includes:

receiving the measurement results of the eligibility judgment parameters of the respective link quality metrics of the first link and the second link sent by the first user equipment;

sending indication information to the first user equipment, where the indication information is used to indicate the working link selected from the first link and the second link.

In a third aspect, the present invention provides a user equipment, including:

A measuring module, configured to measure the link quality between the first user equipment and the network side equipment and the link quality between the first user equipment and the second equipment through the first link and the second link respectively ;

A communication module, configured to communicate using a working link selected from the first link and the second link, the working link is based on the measured different link quality metrics and the first link and the second link The criteria for judging the eligibility of the link quality metrics corresponding to the links are jointly determined.

In a fourth aspect, the present invention provides a network side device, including:

The first receiving module is configured to receive the measurement results of the qualification judgment parameters of the respective link quality metrics of the first link and the second link sent by the first user equipment;

A first sending module, configured to send indication information to the first user equipment, where the indication information is used to indicate a working link selected from the first link and the second link.

In a fifth aspect, the present invention provides a user equipment, including: a processor and a transceiver;

The processor is configured to respectively measure the link quality between the first user equipment and the network side equipment and the link between the first user equipment and the second equipment through the first link and the second link road quality;

The transceiver is configured to communicate using a working link selected from the first link and the second link, and the working link is based on different measured link quality metrics and the first link and the second link. The eligibility criteria of the link quality metrics corresponding to the second links are jointly determined.

In a sixth aspect, the present invention provides a network side device, including: a processor and a transceiver;

The transceiver is configured to receive the measurement results of the qualification judgment parameters of the respective link quality metrics of the first link and the second link sent by the first user equipment;

The transceiver is further configured to send indication information to the first user equipment, where the indication information is used to indicate the working link selected from the first link and the second link.

In a seventh aspect, the present invention provides a user equipment, including a processor, a memory, and a computer program stored on the memory and operable on the processor, and the computer program is implemented when executed by the processor. The steps in the communication method described in the first aspect.

In an eighth aspect, the present invention provides a network-side device, including a processor, a memory, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor The steps in the link selection method as described in the second aspect are implemented.

In a ninth aspect, the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the communication method described in the first aspect is implemented. steps, or implement the steps in the link selection method as described in the second aspect.

In the embodiment of the present invention, the link quality between the first user equipment and the network side equipment and the link quality between the first user equipment and the second equipment are measured respectively through the first link and the second link; Use the working link selected from the first link and the second link to communicate, and the working link is based on the measured different link quality metrics and the first link and the second link respectively corresponding The eligibility criteria for link quality metrics are jointly determined. In this way, the first user equipment can first obtain the correct result of whether the link quality of the first link and the second link is qualified, so that the correct result based on whether the link quality of the first link and the second link is qualified The reliability of the working link is improved.

Description of drawings

FIG. 1 is a flowchart of a communication method provided by an embodiment of the present invention;

FIG. 2 is a flowchart of a link selection method provided by an embodiment of the present invention;

FIG. 3 is a structural diagram of a user equipment provided by an embodiment of the present invention;

FIG. 4 is a structural diagram of a network side device provided by an embodiment of the present invention;

FIG. 5 is a structural diagram of another user equipment provided by an embodiment of the present invention;

Fig. 6 is a structural diagram of another network side device provided by an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. In the following description, specific details, such as specific configurations and components, are provided only to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art should recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of each process should be determined by its functions and internal logic, rather than implementing the present invention. The implementation of the examples constitutes no limitation.

In related technologies, the criteria for user equipment to select a working link may be downlink and/or uplink, and the operation of selecting a working link may be an autonomous decision of the user equipment, or a network decision assisted by the user equipment. However, no matter which decision-making method or criterion is used for the two links, the judgment is based on the same parameters (such as CSI and RSRP) and/or the same link quality judgment parameter available threshold.

However, due to the differences between base station equipment and similar user equipment in terms of transmission power upper limit and number of antennas, using the same parameters and/or the same threshold does not guarantee that the selected working link can work normally, because for the same Parameters, due to the differences in the upper limit of transmit power and the number of antennas between base station equipment and user equipment, the difference in the measurement results of these parameters is very large, and the difference in absolute value does not represent the relative situation of the actual link quality .

For example, due to the huge advantage of the base station in the transmission power upper limit, even at the edge of the cell, it is possible that the signal strength of the signal received by the user equipment from the base station is much higher than the signal strength of the signal received from another user equipment. However, the actual situation at this time may be that the communication quality between the user equipment at the edge of the cell and the base station is far worse than the communication quality between the user equipment and another user equipment.

Therefore, the working link selected based on the relevant technical solutions cannot guarantee the normal operation of the user equipment. The main reason is that there are often differences in the transmission power and the number of antennas between the base station equipment and similar terminal equipment. Compared with the downlink, it is difficult to ensure that the link selection is sufficiently reliable. Often, when the link is selected based on the optimal uplink, the downlink may become worse; and when the link is selected based on the optimal downlink, the uplink may become worse.

However, in the embodiment of the present invention, a new judging mechanism is introduced, such as setting a quality metric for each link, and the metric for each link quality evaluation is different, for example, the metric used for Uu link is Rx UE (judgment UE) RSRP, but the metric used for the SL link is Pathloss, or the Rx RSRP of the UE’s Peer UE (peer UE), only when the current link quality metric cannot meet the preset requirements, and another link meets the preset requirements. Another link is selected only when required by the setting. In this way, the purpose of judging whether another link needs to be selected based on whether the link can maintain necessary services and necessary link quality can be achieved.

In the communication method of the specific embodiment of the present invention, the previous method of selecting a working link based on the same standard/same metric (such as the same parameter, the same parameter threshold, etc.) has been changed, but from the perspective of reliability, each link is set Each link has its own unique criterion or strategy for judging whether the link can work normally or avoiding the uncertainty of link quality (for example, maintaining necessary services or maintaining necessary link quality, etc.). At this time, the criterion or strategy for judging whether the link can work normally or avoiding the uncertainty of the quality of the selected link (such as maintaining the necessary service or maintaining the necessary link quality, etc.) is set for the link, avoiding other The influence of link guidelines or policies.

In other words, in the method of the embodiment of the present invention, the working link selected from the first link and the second link is used for communication, and the working link is based on the measured link quality and the first The eligibility criteria of the link quality metrics corresponding to the link and the second link are jointly determined. Since the eligibility judgment criteria of the link quality metrics of the first link and the second link are independent of each other, whether the quality of each link is qualified or not is to consider its own transmission power upper limit, the number of antennas, etc., and will not be affected by another The influence of factors such as the upper limit of the transmit power of the link and the number of antennas can improve the reliability of the selection of the working link.

As shown in FIG. 1, the communication method according to the specific embodiment of the present invention is used for the first user equipment, and the communication method includes:

Step 101, measuring the link quality between the first user equipment and the network side equipment and the link quality between the first user equipment and the second equipment through the first link and the second link respectively;

Step 102, use the working link selected from the first link and the second link to communicate, and the working link is based on the measured different link quality metrics and the first link and the second link The eligibility criteria of the corresponding link quality metrics are jointly determined.

In the method of the embodiment of the present invention, the first link and the second link use different link quality metrics, and use the working link selected from the first link and the second link to communicate, and the working link The path is jointly determined according to the different measured link quality metrics and the eligibility criteria of the link quality metrics corresponding to the first link and the second link. Therefore, the method of the embodiment of the present invention can firstly obtain the correct result of whether the link quality of the first link and the second link is qualified, and the correct result based on whether the link quality of the first link and the second link is qualified The reliability of the selected working link is improved.

Different from the related methods in the prior art, in the communication method of the embodiment of the present invention, it is set for each link to determine whether the link can work normally (that is, to determine whether the link quality is qualified, or to determine whether the link quality can maintain the necessary business, etc.) guidelines or policies. The differences in criteria or strategies for judging whether the link quality is qualified for each link can be reflected in the following aspects:

The link quality judgment parameters for judging whether the link can work normally are different; for example, the parameter selected for the first link is a signal strength parameter, while the parameter selected for the second link is a signal propagation loss parameter.

Optionally, on the basis of the signal propagation loss parameters, the terminal transmit power and the number of receiving antennas can be further considered, because on the sidelink, the transmitting UE calculates the signal propagation loss based on the receiving UE feeding back to the transmitting UE its own measurement of the transmitting UE. Signaling RSRP is obtained. This RSRP is obtained based on a single antenna assumption. If this RSRP is called a benchmark or reference RSRP, then if the receiving UE has more receiving antennas, it is equivalent to the RSRP received by a single antenna. Its value can be equivalent to the base or reference RSRP plus the additional receiving gain obtained by adding the number of antennas as a conversion factor.

That is to say, the link quality metrics corresponding to the first link and the second link respectively can be signal strength parameters and signal propagation loss parameters measured by themselves, respectively. The signal strength parameter measured by the endpoint. For example, the metric used for the first link is its own RSRP, but the metric used for the second link is Pathloss or the received RSRP of the peer user equipment.

To sum up, in the specific embodiment of the present invention, the eligibility judgment criteria of the link quality metrics corresponding to the first link and the second link at least include different link quality metrics and their eligibility judgment parameters and/or Judgment threshold.

In this way, it can be determined whether the communication quality of the first link is qualified based on the link quality metric of the first link, and the qualified judgment parameter and/or judgment threshold used to judge whether the link quality metric is qualified; The link quality metric of the second link, and the pass judgment parameter and/or judgment threshold used to judge whether the link quality metric is qualified, determine whether the communication quality of the second link is qualified.

In a specific embodiment of the present invention, for different links, it is judged whether the link quality of the link is qualified or not, without considering the comparison between the quality of the first link and the quality of the second link in the case of the same measurement , different results can be obtained, and an appropriate working link can be selected based on the link quality judgment result. Here, the strategy of how to determine the working link is described in detail as follows.

<Strategy One>

The first user equipment is currently working on the first link, and judges that the first link does not meet the link quality according to the link quality qualification criteria corresponding to the first link and the second link respectively. requirements, and the second link meets the link quality requirements, select the second link as the working link.

The first strategy above may mean that: the first user equipment uses a link with qualified link quality as the working link, and avoids using a link with unqualified link quality for communication, thereby improving communication reliability. That is to say, the above strategy one gives priority to the reliability of communication quality.

<Strategy Two>

The first user equipment is currently working on the first link, and judges that the first link meets the link quality requirement according to the link quality qualification criteria corresponding to the first link and the second link respectively In the case of , select the first link as the working link.

The second strategy above may mean: no matter what happens to the second link, as long as the link quality of the Uu link is qualified, the Uu link is selected. That is to say, the above strategy two gives priority to using the Uu link for communication.

In view of the fact that the Uu link is a link for communicating with a fixed base station, and the SL link is a link for communicating with another user equipment, and the mobility and unreliability of the user equipment (such as power off, setting of flight mode, etc.) ) may lead to instability of the SL link, which causes the reliability of the Uu link to be higher than that of the SL link. In this policy, the Uu link is used for communication firstly. When the link quality of the Uu link is qualified, no link switching is performed regardless of whether the link quality of the SL link is qualified. In this way, the first user can be improved. The stability of the device's communication and reduce the frequency of link switching.

<Strategy Three>

The first user equipment is currently working on the first link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively If none of the link quality requirements are met, the first link is selected as the working link.

The third strategy above can mean: when the link quality of the first link and the second link are both unqualified, no link switching is performed, so as to reduce link switching frequency and avoid unnecessary operations.

<Strategy Four>

The first user equipment is currently working on the first link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively All meet the link quality requirements, and select the first link as the working link.

The fourth strategy above can reduce the frequency of link switching, and can preferentially use the Uu link for communication.

<Strategy Five>

The first user equipment is currently working on the second link, and judges that the second link does not meet the link quality according to the link quality judgment standards corresponding to the first link and the second link respectively. requirements, and if the first link meets the link quality requirements, select the first link as the working link.

The fifth strategy above can switch the first user equipment from the second link with unqualified link quality to the first link with qualified link quality, thereby improving the communication reliability of the first user equipment.

<Strategy Six>

The first user equipment is currently working on the second link, and judges that the first link meets the link quality requirement according to the link quality qualification criteria corresponding to the first link and the second link respectively In the case of , selecting the first link as the working link;

The difference between the above strategy six and strategy five is that the above strategy six only needs the link quality of the first link to be qualified regardless of whether the link quality of the second link is qualified, and the first link will be used as the working link. so that the first link is preferentially used for communication.

In this way, considering that the stability of the first link is higher than that of the second link, the sixth strategy above can improve the communication stability of the first user equipment.

<Strategy Seven>

The first user equipment is currently working on the second link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively None of the link quality requirements are met, and the second link is selected as the working link;

The above strategy seven is similar to strategy three, and both can reduce the link switching frequency.

<Strategy Eight>

The first user equipment is currently working on the second link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively Both meet the link quality requirements, and select the second link as the working link.

The eighth strategy above can reduce the frequency of link switching.

Compared with the existing scheme of setting the same criterion, the method of the embodiment of the present invention judges whether it is necessary to select other links based on whether the link can maintain the necessary service and necessary link quality, for example, for each link Set a quality metric (i.e. link quality qualification judgment parameter) respectively, and the metric of each link quality evaluation is different (for example, the metric used for the first link is its own RSRP, but the metric used for the second link is The metric is Pathloss, or the receiving RSRP of the end user equipment).

At the same time, according to the result of the link quality evaluation, an appropriate working link can be selected according to different requirements. For example, only when the quality metric of the currently working link fails to meet the preset requirement and another link meets the preset requirement, another link will be selected.

The above-mentioned link quality judgment parameters and/or thresholds can be configured by the network side, for example: configure the user equipment respectively: the measurement and/or measurement threshold of whether the Uu link quality is qualified or not, and whether the SL link quality is qualified or not Metrics and Metric Thresholds. The quality metric of the Uu link may include the signal strength of the signal received by the UE, and the quality metric of the SL link at least includes signal loss or the signal strength of the signal sent by the UE received by the peer UE.

Of course, the above signal loss can be obtained directly, or can be obtained indirectly based on the transmit power of the user equipment and the receive power of the peer user equipment.

In a specific embodiment of the present invention, the selection of the working link may be decided by the user equipment itself, but may also be decided by the network side.

When the selection of the working link is decided by the network side, in the specific embodiment of the present invention, before using the working link selected from the first link and the second link to communicate, it also includes:

Send the measurement results of the qualification judgment parameters of the link quality metrics of the first link and the second link to the network side device;

Receive indication information sent by the network side device, where the indication information is used to indicate the working link determined by the network side device.

From the network side, the embodiment of the present invention also includes a link selection method for network side equipment, as shown in FIG. 2, the link selection method includes:

Step 201: Receive the measurement results of the qualification judgment parameters of the respective link quality metrics of the first link and the second link sent by the first user equipment.

Step 202: Send indication information to the first user equipment, where the indication information is used to indicate a working link selected from the first link and the second link.

The strategy for determining the working link on the network side is exactly the same as the strategy for determining the working link on the terminal side, and will not be described in detail here.

In addition, in the case that the selection of the working link is decided by the user equipment, before using the working link selected from the first link and the second link to perform communication, it also includes:

According to the measurement results of the eligibility judgment parameters of the link quality metrics corresponding to the first link and the second link and the eligibility judgment criteria of the link quality metrics corresponding to the first link and the second link, jointly determine the the working link;

In the case that the working link is different from the currently working link, a switching request is sent to the network side device.

The method of the embodiment of the present invention is further described as follows.

The terminal is configured by the network side device with at least one of the metric and threshold for the quality of the Uu link, and the metric and the threshold for the quality of the SL link, where the quality metric of the Uu link can be the signal received by the UE The signal strength of the SL link may be the signal propagation loss, and the propagation loss may be indirectly calculated through the signal strength of the signal sent by the UE received by the peer UE.

After the configuration on the network side, when the UE works on the Uu link, it first judges whether the signal strength of the signal received on the Uu link meets the link quality requirements, and if it does not meet the requirements, then judges whether the SL link quality meets the link quality requirements. Quality requirements. If the quality of the SL link meets the link quality requirements, the UE reports the evaluation results of the two links to the network. The result can be a handover request (the UE decides to switch to the SL link by itself), or it can be two links metric value (for the network side to judge whether to switch to SL). Of course, the UE can also make its own decision and directly select the SL link.

When the UE is on the SL link, if the UE judges that the signal strength of the signal it receives on the Uu link meets the link quality requirements, the UE will report to the network whether the SL link quality still meets the requirements. The evaluation result of a link, which can be a handover request, or the metric value of two links; or, the UE selects the Uu link by itself.

In the embodiment of the present invention, the link quality between the first user equipment and the network side equipment and the link quality between the first user equipment and the second equipment are measured respectively through the first link and the second link; Communication is performed by using a working link selected from the first link and the second link, and the working link is based on the measured link quality and the corresponding link quality of the first link and the second link respectively The eligibility criteria are jointly determined. In this way, the first user equipment can first obtain the correct result of whether the link quality of the first link and the second link is qualified, so that the correct result based on whether the link quality of the first link and the second link is qualified The reliability of the working link is improved.

Please refer to FIG. 3 , which is a structural diagram of a first user equipment provided by an embodiment of the present invention. As shown in FIG. 3 , the first user equipment 300 includes:

A measuring module 301, configured to measure the link quality between the first user equipment and the network side equipment and the link between the first user equipment and the second equipment through the first link and the second link respectively quality;

A communication module 302, configured to perform communication using a working link selected from the first link and the second link, the working link is based on different measured link quality metrics and the first link and the second link The eligibility criteria of the link quality metrics corresponding to the two links are jointly determined.

Optionally, the eligibility judgment criteria of the link quality metrics corresponding to the first link and the second link at least include different link quality metrics, their eligibility judgment parameters and/or judgment thresholds.

Optionally, the link quality metrics corresponding to the first link and the second link are respectively a signal strength parameter and a signal propagation loss parameter, or respectively a signal strength parameter measured by itself and a signal strength parameter measured by the opposite end .

Optionally, the working link is determined according to at least one of the following strategies:

The first user equipment is currently working on the first link, and judges that the first link does not meet the link quality according to the link quality qualification criteria corresponding to the first link and the second link respectively requirements, and when the second link meets the link quality requirements, select the second link as the working link;

The first user equipment is currently working on the first link, and judges that the first link meets the link quality requirement according to the link quality qualification criteria corresponding to the first link and the second link respectively In the case of , selecting the first link as the working link;

The first user equipment is currently working on the first link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively None of the link quality requirements are met, and the first link is selected as the working link;

The first user equipment is currently working on the first link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively Both meet the link quality requirements, and select the first link as the working link;

The first user equipment is currently working on the second link, and judges that the second link does not meet the link quality according to the link quality judgment standards corresponding to the first link and the second link respectively. requirements, and when the first link meets the link quality requirements, select the first link as the working link;

The first user equipment is currently working on the second link, and judges that the first link meets the link quality requirement according to the link quality qualification criteria corresponding to the first link and the second link respectively In the case of , selecting the first link as the working link;

The first user equipment is currently working on the second link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively None of the link quality requirements are met, and the second link is selected as the working link;

The first user equipment is currently working on the second link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively Both meet the link quality requirements, and select the second link as the working link.

Optionally, the first user equipment 300 further includes:

The second sending module is used to send the measurement results of the qualification judgment parameters of the respective link quality metrics of the first link and the second link to the network side device;

The second receiving module is configured to receive indication information sent by the network side device, where the indication information is used to indicate the working link determined by the network side device.

Optionally, the first user equipment 300 further includes:

A determination module, configured to determine whether the parameters are qualified according to the link quality metrics corresponding to the first link and the second link, and the qualification of the link quality metrics corresponding to the first link and the second link. The judging criteria jointly determine the working link;

The third sending module is configured to send a switching request to the network side device when the working link is different from the current working link.

The first user equipment 300 provided by the embodiment of the present invention may specifically be the first user equipment applying the communication method as shown in FIG. 1 , and the first user equipment 300 can achieve the same beneficial effect as the method embodiment shown in FIG. 1 , will not be elaborated here.

Please refer to FIG. 4, which is a structural diagram of a network-side device provided by an embodiment of the present invention. As shown in FIG. 4, the network-side device 400 includes:

The first receiving module 401 is configured to receive the measurement results of the qualification judgment parameters of the link quality metrics of the first link and the second link sent by the first user equipment;

The first sending module 402 is configured to send indication information to the first user equipment, where the indication information is used to indicate a working link selected from the first link and the second link.

The network-side device 400 provided in the embodiment of the present invention may specifically be a network-side device that applies the link selection method shown in FIG. 2 , and the network-side device 400 can achieve the same beneficial effects as the method embodiment shown in FIG. 2 , No specific elaboration is given here.

Please refer to FIG. 5, which is a structural diagram of another first user equipment provided by the embodiment of the present application. As shown in FIG. 5, the first user equipment includes: a bus 501, a transceiver 502, an antenna 503, a bus interface 504, processor 505 and memory 506 .

The processor 505 is configured to respectively measure the link quality between the first user equipment and the network side equipment and the link quality between the first user equipment and the second equipment through the first link and the second link;

The transceiver 502 is configured to perform communication using a working link selected from the first link and the second link, and the working link is based on different measured link quality metrics and the first link and the second link The eligibility criteria of the link quality metrics corresponding to the two links are jointly determined.

Optionally, the eligibility judgment criteria of the link quality metrics corresponding to the first link and the second link at least include different link quality metrics, their eligibility judgment parameters and/or judgment thresholds.

Optionally, the link quality metrics corresponding to the first link and the second link are respectively a signal strength parameter and a signal propagation loss parameter, or respectively a signal strength parameter measured by itself and a signal strength parameter measured by the opposite end .

Optionally, the working link is determined according to at least one of the following strategies:

The first user equipment is currently working on the first link, and judges that the first link does not meet the link quality according to the link quality qualification criteria corresponding to the first link and the second link respectively. requirements, and the second link meets the link quality requirements, select the second link as the working link;

The first user equipment is currently working on the first link, and judges that the first link meets the link quality requirement according to the link quality qualification criteria corresponding to the first link and the second link respectively In the case of , selecting the first link as the working link;

The first user equipment is currently working on the first link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively None of the link quality requirements are met, and the first link is selected as the working link;

The first user equipment is currently working on the first link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively Both meet the link quality requirements, and select the first link as the working link;

The first user equipment is currently working on the second link, and judges that the second link does not meet the link quality according to the link quality judgment standards corresponding to the first link and the second link respectively. requirements, and when the first link meets the link quality requirements, select the first link as the working link;

The first user equipment is currently working on the second link, and judges that the first link meets the link quality requirement according to the link quality qualification criteria corresponding to the first link and the second link respectively In the case of , selecting the first link as the working link;

The first user equipment is currently working on the second link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively None of the link quality requirements are met, and the second link is selected as the working link;

The first user equipment is currently working on the second link, and judges the first link and the second link according to the link quality judgment standards corresponding to the first link and the second link respectively Both meet the link quality requirements, and select the second link as the working link.

Optionally, before performing the communication using the working link selected from the first link and the second link, the transceiver 502 is further configured to:

Send the measurement results of the qualification judgment parameters of the link quality metrics of the first link and the second link to the network side device;

Receive indication information sent by the network side device, where the indication information is used to indicate the working link determined by the network side device.

Optionally, before the transceiver 502 performs the communication by using the working link selected from the first link and the second link:

The processor 505 is further configured to use the measurement results of the qualification judgment parameters of the link quality metrics corresponding to the first link and the second link and the link quality metrics corresponding to the first link and the second link respectively The eligibility criteria for determining the working link together;

The transceiver 502 is further configured to send a switching request to the network side device when the working link is different from the currently working link.

In this implementation manner, the first user equipment can implement each process implemented by the first user equipment in the method embodiment shown in FIG. 1 , and has the same beneficial effects. To avoid repetition, details are not repeated here.

In FIG. 5, the bus architecture (represented by bus 501), bus 501 may include any number of interconnected buses and bridges, bus 501 will include one or more processors represented by processor 505 and memory represented by memory 506 The various circuits are linked together. The bus 501 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and thus will not be further described herein. The bus interface 504 provides an interface between the bus 501 and the transceiver 502 . Transceiver 502 may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor 505 is transmitted on the wireless medium through the antenna 503 , further, the antenna 503 also receives the data and transmits the data to the processor 505 .

The processor 505 is responsible for managing the bus 501 and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. Instead, the memory 606 may be used to store data used by the processor 505 when performing operations.

Optionally, the processor 505 may be a CPU, ASIC, FPGA or CPLD.

Preferably, the embodiment of the present invention also provides a first user equipment, including a processor 505, a memory 506, a computer program stored in the memory 506 and operable on the processor 505, and the computer program is executed by the processor 505 During execution, each process of the above-mentioned communication method embodiment shown in FIG. 1 can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

Please refer to FIG. 6, which is a structural diagram of another network side device provided by the embodiment of the present application. As shown in FIG. 6, the network side device includes: bus 601, transceiver 602, antenna 603, bus interface 604, processor 605 and memory 606.

The transceiver 602 is configured to receive the measurement results of the qualification judgment parameters of the respective link quality metrics of the first link and the second link sent by the first user equipment;

The transceiver 602 is further configured to send indication information to the first user equipment, where the indication information is used to indicate the working link selected from the first link and the second link.

In this embodiment, the network-side device can implement the various processes implemented by the network-side device in the method embodiment shown in FIG. 2 , and has the same beneficial effects. To avoid repetition, details are not repeated here.

In FIG. 6, the bus architecture (represented by bus 601), bus 601 may include any number of interconnected buses and bridges, bus 601 will include one or more processors represented by processor 605 and memory represented by memory 606 The various circuits are linked together. The bus 601 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and thus will not be further described herein. The bus interface 604 provides an interface between the bus 601 and the transceiver 602 . Transceiver 602 may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor 605 is transmitted on the wireless medium through the antenna 603 , further, the antenna 603 also receives the data and transmits the data to the processor 605 .

The processor 605 is responsible for managing the bus 601 and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. Instead, the memory 606 may be used to store data used by the processor 605 when performing operations.

Optionally, the processor 605 may be a CPU, ASIC, FPGA or CPLD.

Preferably, the embodiment of the present invention also provides a network side device, including a processor 605, a memory 606, a computer program stored in the memory 606 and operable on the processor 605, and the computer program is executed by the processor 605 Each process of the embodiment of the link selection method shown in FIG. 2 can be realized at the same time, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, various processes of the above-mentioned communication method embodiment shown in FIG. 1 are implemented, or, Each process of the embodiment of the link selection method shown in FIG. 2 above is implemented, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.

Wherein, the computer-readable storage medium is, for example, ROM, RAM, magnetic disk or optical disk, and the like.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in various embodiments of the present invention.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, without departing from the gist of the present invention and the protection scope of the claims, many forms can also be made, all of which belong to the protection of the present invention.

Claims (14)

1. A communication method for a first user equipment, the communication method comprising:

measuring link quality between first user equipment and network side equipment and link quality between the first user equipment and second equipment through a first link and a second link respectively;

and carrying out communication by utilizing an operating link selected from the first link and the second link, wherein the operating link is determined jointly according to the measured different link quality metrics and the qualification judgment standard of the link quality metrics corresponding to the first link and the second link respectively.

2. The communication method according to claim 1, wherein:

the qualification judgment standard of the link quality measurement corresponding to each of the first link and the second link at least comprises different link quality measurement, qualification judgment parameters and/or judgment thresholds thereof.

3. The communication method according to claim 2, wherein the link quality metrics corresponding to the first link and the second link are a signal strength parameter and a signal propagation loss parameter, respectively, or a signal strength parameter measured by itself and a signal strength parameter measured by an opposite terminal, respectively.

4. The communication method according to claim 2, wherein the working link is determined according to at least one of the following policies:

when the first user equipment works in the first link currently and the first link does not meet the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link respectively, selecting the second link as the working link under the condition that the second link meets the link quality requirement;

when the first user equipment works in the first link currently and the first link meets the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link, selecting the first link as the working link;

when the first user equipment works in the first link at present, judging that the first link and the second link do not meet the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link respectively, and selecting the first link as the working link;

when the first user equipment works in the first link at present, judging that the first link and the second link both meet the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link respectively, and selecting the first link as the working link;

when the first user equipment works in the second link currently and the second link does not meet the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link respectively, and the first link is selected as the working link under the condition that the first link meets the link quality requirement;

when the first user equipment works in the second link currently and the first link meets the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link, selecting the first link as the working link;

when the first user equipment works in the second link currently, judging that the first link and the second link do not meet the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link respectively, and selecting the second link as the working link;

and when the first user equipment works in the second link currently, judging that the first link and the second link both meet the link quality requirement according to the link quality qualification judgment standard corresponding to the first link and the second link respectively, and selecting the second link as the working link.

5. The communication method according to claim 2, wherein before the communicating using the working link selected from the first link and the second link, further comprising:

sending the measurement result of the qualified judgment parameter of the link quality metric of the first link and the second link to the network side equipment;

and receiving indication information sent by the network side equipment, wherein the indication information is used for indicating the working link determined by the network side equipment.

6. The communication method according to claim 2, wherein before the communicating using the working link selected from the first link and the second link, further comprising:

determining the working link according to the measurement result of the qualified judgment parameter of the link quality metric corresponding to the first link and the second link and the qualified judgment standard of the link quality metric corresponding to the first link and the second link;

and sending a switching request to the network side equipment under the condition that the working link is different from the current working link.

7. A link selection method, used in a network side device, the link selection method comprising:

receiving a measurement result of a qualified judgment parameter of respective link quality metrics of a first link and a second link, which is sent by first user equipment;

and sending indication information to the first user equipment, wherein the indication information is used for indicating an operating link selected from the first link and the second link.

8. A first user device, comprising:

a measurement module, configured to measure, through a first link and a second link, link quality between the first user equipment and a network side device and link quality between the first user equipment and a second device, respectively;

the communication module is used for carrying out communication by utilizing a working link selected from the first link and the second link, and the working link is determined jointly according to the measured different link quality metrics and the qualification judgment standard of the link quality metrics corresponding to the first link and the second link respectively.

9. A network-side device, comprising:

a first receiving module, configured to receive a measurement result of a qualification judgment parameter of a link quality metric of each of a first link and a second link sent by a first user equipment;

a first sending module, configured to send indication information to the first user equipment, where the indication information is used to indicate an operating link selected from a first link and a second link.

10. A first user device, comprising: a processor and a transceiver;

the processor is configured to measure, through a first link and a second link, a link quality between the first user equipment and a network side device and a link quality between the first user equipment and a second device;

the transceiver is configured to perform communication using an operating link selected from a first link and a second link, where the operating link is determined jointly according to different measured link quality metrics and a qualification criterion of the link quality metrics corresponding to the first link and the second link.

11. A network-side device, comprising: a processor and a transceiver;

the transceiver is configured to receive a measurement result of a qualification judgment parameter of a link quality metric of each of a first link and a second link sent by a first user equipment;

the transceiver is further configured to send indication information to the first user equipment, where the indication information is used to indicate an operating link selected from the first link and the second link.

12. User equipment, characterized in that it comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps in the communication method according to any of claims 1-6.

13. A network-side device comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps in the link selection method according to claim 7.

14. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps in the communication method according to any one of claims 1-6 or the steps in the link selection method according to claim 7.

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