CN115066931B

CN115066931B - Communication method and device for beam switching

Info

Publication number: CN115066931B
Application number: CN202080004052.XA
Authority: CN
Inventors: 罗星熠; 李明菊
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-10-03
Anticipated expiration: 2040-12-31
Also published as: CN115066931A; WO2022141546A1

Abstract

The present disclosure relates to a communication method comprising: measuring the beams of the adjacent cells to obtain a first beam measurement result; transmitting the first beam measurement result to a serving cell; and receiving Downlink Control Information (DCI), wherein the DCI comprises beam switching indication information which is used for indicating whether the terminal switches to the beam of the neighbor cell. According to the method and the device, the indication information is sent to the terminal through the beam switching indication information carried by the DCI, so that the indication function of the DCI is expanded, and the utilization rate of communication resources is improved.

Description

Communication method and device for beam switching

Technical Field

The present disclosure relates to the field of communication technology, and in particular, to a communication method, a communication apparatus, an electronic device, and a computer-readable storage medium for beam switching.

Background

When the terminal is at the edge of the service cell, the strength of the signal received by the terminal will be weaker, and the communication process will be adversely affected. In order to ensure the communication quality of the terminal, a cell Handover (Handover) method is proposed in the related art to control the Handover of a serving cell to a small neighbor cell in the terminal.

For example, for a 5G cell, the cell may communicate with the terminal through a beam, the terminal receives signals at the serving cell through the beam of the serving cell, and after switching to a neighboring cell, the terminal can use the beam of the neighboring cell to receive signals.

But the cell handover procedure involves an RRC (Radio Resource Control, RRC) layer and even higher layers to reconfigure the cell parameters, which may lead to a larger communication delay for the terminal.

Disclosure of Invention

In view of the above, embodiments of the present disclosure propose a communication method, a communication apparatus, an electronic device, and a computer-readable storage medium for beam switching to solve the technical problems in the related art.

According to a first aspect of an embodiment of the present disclosure, a communication method is provided, applicable to a terminal, and the method includes:

measuring the beams of the adjacent cells to obtain a first beam measurement result;

transmitting the first beam measurement result to a serving cell;

and receiving Downlink Control Information (DCI), wherein the DCI comprises beam switching indication information which is used for indicating whether the terminal switches to the beam of the neighbor cell.

According to a second aspect of the embodiments of the present disclosure, a communication method is provided, adapted to a serving cell, the method comprising:

Receiving a first beam measurement result obtained by measuring the beam of the adjacent cell by the terminal;

determining Downlink Control Information (DCI) based on the first beam measurement result, wherein the DCI comprises beam switching indication information used for indicating whether the terminal is switched to a beam of the neighbor cell;

and sending the beam switching indication information to the terminal.

According to a third aspect of the embodiments of the present disclosure, there is provided a communication apparatus adapted for a terminal, the apparatus comprising:

the beam measurement module is configured to measure the beams of the adjacent cells to obtain a first beam measurement result;

a result transmitting module configured to transmit the first beam measurement result to a serving cell;

an indication receiving module, configured to receive downlink control information DCI, where the DCI includes beam switching indication information, where the beam switching indication information is used to indicate whether the terminal switches to a beam of the neighboring cell.

According to a fourth aspect of embodiments of the present disclosure, there is provided a communication device adapted for a serving cell, the device comprising:

the result receiving module is configured to receive a first beam measurement result obtained by measuring the beam of the adjacent cell by the terminal;

An indication determining module, configured to determine downlink control information DCI based on the first beam measurement result, where the DCI includes beam switching indication information, where the beam switching indication information is used to indicate whether the terminal switches to a beam of the neighboring cell;

and the indication sending module is configured to send the beam switching indication information to the terminal.

According to a fifth aspect of embodiments of the present disclosure, there is provided an electronic device, including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the above-described communication method.

According to a sixth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, which program, when being executed by a processor, implements the steps of the above-mentioned communication method.

According to the embodiment of the disclosure, the DCI carries the beam switching indication information and sends the beam switching indication information to the terminal, so that the indication function of the DCI is expanded, and the utilization rate of communication resources is improved.

In addition, when the terminal determines to use the beam of the adjacent cell to communicate according to the beam switching instruction information, the terminal can use the beam of the adjacent cell to communicate in a state of residing in the service cell, so that the terminal still resides in the service cell, and can use the beam of the adjacent cell to communicate without switching the cell. Because the cell is not required to be switched, the cell parameters can be reconfigured without the high layers such as an RRC layer, thereby avoiding the generation of larger communication time delay and being beneficial to ensuring the communication effect of the terminal.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a schematic flow chart diagram illustrating a communication method according to an embodiment of the present disclosure.

Fig. 2 is a schematic flow chart diagram illustrating another communication method according to an embodiment of the present disclosure.

Fig. 3 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 4 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 5 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 6 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 7 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 8 is a schematic flow chart diagram illustrating a communication method according to an embodiment of the present disclosure.

Fig. 9 is a schematic flow chart diagram illustrating another communication method according to an embodiment of the present disclosure.

Fig. 10 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 11 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 12 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure.

Fig. 13 is a schematic block diagram of a communication device shown in accordance with an embodiment of the present disclosure.

Fig. 14 is a schematic block diagram of another communication device shown in accordance with an embodiment of the present disclosure.

Fig. 15 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure.

Fig. 16 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure.

Fig. 17 is a schematic block diagram of a communication device shown in accordance with an embodiment of the present disclosure.

Fig. 18 is a schematic block diagram of another communication device shown in accordance with an embodiment of the present disclosure.

Fig. 19 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure.

Fig. 20 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure.

Fig. 21 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure.

Fig. 22 is a schematic block diagram of a communication device shown in accordance with an embodiment of the present disclosure.

Fig. 23 is a schematic block diagram of a communication device shown in accordance with an embodiment of the present disclosure.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

Fig. 1 is a schematic flow chart diagram illustrating a communication method according to an embodiment of the present disclosure. The communication method shown in the embodiment may be suitable for a terminal, where the terminal includes, but is not limited to, an electronic device such as a mobile phone, a tablet computer, a wearable device, a sensor, and an internet of things device. The terminal may communicate as a user equipment with base stations including, but not limited to, 4G base stations, 5G base stations, 6G base stations. In one embodiment, the base station may be a base station to which the communication method described in any of the following embodiments is applicable.

As shown in fig. 1, the communication method may include the steps of:

in step S101, measuring a beam of a Neighbor Cell (NC) to obtain a first beam measurement result;

in step S102, the first beam measurement result is sent to a Serving Cell (SC);

in step S103, downlink control information DCI (Downlink Control Information) is received, where the DCI includes beam switching indication information, where the beam switching indication information is used to indicate whether the terminal switches to a beam of the neighboring cell.

In one embodiment, the terminal may measure the beam of the neighboring cell to obtain a first beam measurement result, and then send the first beam measurement result to the serving cell, that is, the current serving cell of the terminal, and may specifically be sent to the base station of the serving cell.

In one embodiment, the measuring of the beams of the neighbor cells may be in response to determining that the terminal is in a geographic region where the serving cell and the neighbor cells overlap. In this overlapping geographical area, the terminal may receive beams from both the serving cell and the neighbor cell.

As a specific implementation, when the signal strength of the beam of the serving cell can be received by the terminal is smaller, for example smaller than the first threshold, and the signal strength of the beam of the neighboring cell is larger, for example larger than the second threshold, the second threshold may be equal to or unequal to the first threshold, i.e. the terminal determines that it is currently in the overlapping geographical area of the serving cell and the neighboring cell. However, the technical solution of the present disclosure is not limited thereto, and is not described herein.

After determining that the terminal is in the overlapping geographic area of the serving cell and the neighbor cell, the terminal may send a measurement result reporting request to the serving cell to request reporting of the measurement result of the beam of the neighbor cell, or may autonomously respond to determining that the terminal is in the overlapping geographic area of the serving cell and the neighbor cell, perform beam measurement of the neighbor cell and report the measurement result.

In an embodiment, the terminal measures the beam of the neighboring cell, which may be the beam in one neighboring cell or the beam in a plurality of neighboring cells, for example, the first beam measurement result may include the measurement result of one beam in the neighboring cell or the measurement result of a plurality of beams in the neighboring cell.

By sending the first beam measurement result to the serving cell, the serving cell may determine a beam switch indication based on the first beam measurement result, which may be carried in the DCI, which may indicate whether the terminal switches to a beam of a neighboring cell.

In one embodiment, the beam switch indication may occupy one or more bits in the DCI and may be indicated explicitly or implicitly. Taking a bit as an example, when the value of the bit is 1, the beam that the terminal switches to the neighboring cell can be explicitly indicated, and when the bit is 0, the beam that the terminal does not switch to the neighboring cell can be explicitly indicated. Taking the occupation of multiple bits as an example, the multiple bits may be used to indicate other information, when the multiple bits are specific values, the terminal may be implicitly indicated to switch to the beam of the neighboring cell, otherwise, the terminal may be implicitly indicated not to switch to the beam of the neighboring cell, and of course, the implicit indication manner is not limited to the above manner, for example, when the format of the DCI is a specific format, the DCI as a whole may be used as the beam switching indication, and the terminal may be implicitly indicated to switch to the beam of the neighboring cell.

According to the embodiment, the DCI carries the beam switching indication information and sends the beam switching indication information to the terminal, so that the indication function of the DCI is expanded, and the utilization rate of communication resources is improved.

In some embodiments, the method comprises:

in response to determining that the beam switching indication information indicates the terminal to switch to the beam of the adjacent cell, using the beam of the adjacent cell to communicate; or (b)

In response to determining that the beam switch indication information indicates that the terminal does not switch to a beam of the neighbor cell, communication is performed using a beam of a serving cell.

In one embodiment, when the beam switching indication is a beam indicating that the terminal switches to a neighboring cell, the terminal may use the beam of the neighboring cell for communication, where the beam of the neighboring cell may be one or more, and in a case where the beam of the neighboring cell is multiple (for example, multiple beams of one neighboring cell or multiple beams of multiple neighboring cells), the terminal may select one beam therein, for example, a beam with the highest signal strength or a beam with the best communication quality for communication.

In one embodiment, when the beam switch indication indicates that the terminal does not switch to the beam of the neighboring cell, the terminal may use the beam of the serving cell to perform communication, where the beam of the serving cell may be one or more, and in a case that the beam of the serving cell is plural, the terminal may continue to use the currently used beam for communication, or reselect one beam, for example, select a beam with the highest signal strength, or with the best communication quality for communication.

In one embodiment, the communication using beams of neighbor cells is performed in a state where the terminal is camping on the serving cell.

Accordingly, when the terminal determines to use the beam of the adjacent cell for communication according to the beam switching indication information, the beam of the adjacent cell can be used for communication in a state of residing in the service cell, so that the terminal still resides in the service cell, and can use the beam of the adjacent cell for communication without switching the cell. Because the cell is not required to be switched, the cell parameters can be reconfigured without the high layers such as an RRC layer, thereby avoiding the generation of larger communication time delay and being beneficial to ensuring the communication effect of the terminal.

It should be noted that, the terminal may use the beam of the neighboring cell to perform communication, which may include that the terminal receives downlink information of the neighboring cell through the beam sent by the neighboring cell, and may also include that the terminal sends uplink information to the neighboring cell through the beam pointing to the neighboring cell (e.g., the neighboring cell base station), where the beam pointing to the neighboring cell may be determined according to the beam sent by the neighboring cell, for example, the beam with the largest signal strength is determined in the beam sent by the neighboring cell, and then the beam pointing to the neighboring cell is determined based on the angle of the beam.

In addition, the terminal uses the beam of the neighboring cell to perform communication, which may include physical layer communication, for example, receiving a physical downlink control channel and a physical downlink shared channel sent by the neighboring cell, sending a physical uplink control channel to the neighboring cell, sending a physical uplink shared channel to the neighboring cell, and so on. Optionally, the terminal communicates using beams of neighboring cells, excluding communication at the radio access control layer.

In one embodiment, the measurement results of the beam, such as the first beam measurement result described above, and the second beam measurement result in the subsequent embodiment, may be obtained by measuring a reference signal carried by the beam, where the reference signal may be, for example, a channel state information reference signal CSI-RS, a synchronization signal block SSB, or the like; the measurement result may be represented by RSRP (Reference Signal Receiving Power, reference signal received power), SINR (signal to interference plus noise ratio ), or the like, and is not limited herein. It is understood that reference signals, wherever the terminal is enabled to obtain a reference measurement result by measuring it, are included in the scope of the present disclosure. Any technical parameter that may reflect the signal strength and/or signal quality of a reference signal may be considered to be within the scope of the present disclosure.

After beam switching according to the above embodiments, further cell switching may be selected according to actual conditions (e.g., location of terminal, indication of primary cell, etc.), or cell switching may not be performed.

Fig. 2 is a schematic flow chart diagram illustrating another communication method according to an embodiment of the present disclosure. As shown in fig. 2, in some embodiments of the present disclosure, the transmitting the first beam measurement result to a serving cell includes:

in step S201, the first beam measurement result is transmitted to a serving cell in response to the first beam measurement result satisfying a target condition.

In one embodiment, the terminal may determine whether the first beam measurement result meets the target condition, and send the first beam measurement result to the serving cell only when the first beam measurement result meets the target condition, so as to avoid frequently sending the first beam measurement result to the serving cell, so as to save communication resources.

The target condition may be set by the terminal according to a user input instruction, or may be configured by a network (e.g., a base station, a core network, etc.), or may be determined by a terminal communication protocol.

In some embodiments of the present disclosure, the target condition includes at least one of:

the first beam measurement result and the target threshold meet a first relation;

the first beam measurement result and a second beam measurement result obtained by beam measurement of the service cell and the offset meet a second relation;

the ordering between the plurality of first beam measurements and the plurality of second beam measurements satisfies a third relationship.

In one embodiment, the terminal may send the first beam measurement to the serving cell if a first relationship is satisfied between the first beam measurement and a target threshold.

The first relation may be set as required, for example, the first beam measurement result may be greater than the target threshold, thereby ensuring that when the first beam measurement result is greater, that is, greater than the target threshold, the beam is more likely to need to be switched in this case, and the first beam measurement result is sent to the serving cell; and when the first beam measurement is small, i.e. less than the target threshold, in which case no beam switching may be required, it is not necessary to send the first beam measurement to the serving cell. The method and the device are beneficial to avoiding reporting the first beam measurement result to the serving cell under the condition that the beam is not required to be switched, so as to save communication resources.

In one embodiment, the terminal may send the first beam measurement to the serving cell if a second relationship is satisfied between the first beam measurement and the second beam measurement and the offset.

The second relation and the offset may be set as required, and the offset may be a positive value or a negative value, for example, the second relation may be that the first beam measurement result is greater than the sum of the second beam measurement result and the offset, thereby ensuring that when the first beam measurement result is greater, that is, the sum of the second beam measurement result and the offset is greater, it is more likely that a beam needs to be switched in this case, and the first beam measurement result is sent to the serving cell; and when the first beam measurement is smaller, i.e. smaller than the sum of the second beam measurement and the offset, in which case the need to switch beams is smaller, it is not necessary to send the first beam measurement to the serving cell. The method and the device are beneficial to avoiding reporting the first beam measurement result to the serving cell under the condition that the beam is not required to be switched, so as to save communication resources.

In one embodiment, the terminal may send the first beam measurement result to the serving cell if the ordering between the plurality of first beam measurement results and the plurality of second beam measurement results satisfies a third relationship.

The third relationship may be set as needed, for example, in the order from large to small between the plurality of first beam measurement results and the plurality of second beam measurement results, the integrated order of the plurality of first beam measurement results is earlier than the integrated order of the plurality of second beam measurement results, and the integrated order may be obtained by performing weighted summation on the order of each beam measurement result, where the earlier the order is, the larger the weight is.

Accordingly, it can be ensured that the first beam measurement result is transmitted to the serving cell only when the plurality of first beam measurement results are all large, and that the first beam measurement result is not necessarily transmitted to the serving cell only when the individual first beam measurement result is large. The method is beneficial to avoiding that the terminal misjudges that the beam needs to be switched because of larger measurement results of individual first beams caused by noise, measurement errors and the like, and ensures that the terminal reports the measurement results of the first beams to the serving cell when the measurement results of the first beams are larger and stable, so that communication resources are saved.

In one embodiment, the first beam measurement is a measurement of any beam of the neighbor cell.

In one embodiment, the second beam measurement is a measurement of the beam currently used by the serving cell for communication, or is the maximum result of each beam measurement for the serving cell.

In one embodiment, the first beam measurement result may be a measurement result of any beam of the neighboring cell, that is, the measurement result of any beam in the neighboring cell satisfies the target condition, and the neighboring cell may be determined to have a capability of providing appropriate communication capability, so that the first beam measurement result may be sent to the serving cell.

The second beam measurement result is a measurement result of a beam currently used by the serving cell or a maximum measurement result of each beam measurement of the serving cell, and since a relationship between the second beam measurement result and the first beam measurement result needs to be determined, that is, the second beam measurement result and the first beam measurement result need to be compared to a certain extent, the measurement result of the currently used beam (the currently used beam is generally the beam with the best signal in the serving cell for the terminal) or the maximum measurement result of all beams in the serving cell can be selected for comparison, so that the comparison between the smaller measurement result and the first measurement result is not selected, and the situation that the target condition is met is easily determined, so that the communication resource is wasted and frequent switching is caused.

Fig. 3 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 3, in some embodiments of the present disclosure, the transmitting the first beam measurement result to a serving cell includes:

In step S301, the first beam measurement result is periodically transmitted to a serving cell.

In one embodiment, the terminal may also periodically send the first beam measurement result to the serving cell, where the period of sending the first beam measurement result may be configured by the serving cell or may be determined by the terminal according to a communication protocol.

As to whether the terminal periodically transmits the first beam measurement result to the serving cell or transmits the first beam measurement result to the serving cell when the first beam measurement result satisfies the target condition, it may be selected as needed.

Fig. 4 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 4, in some embodiments of the present disclosure, the measuring the beam of the neighboring cell to obtain the first beam measurement result includes:

in step S401, in response to receiving the trigger information sent by the serving cell, the beam of the neighboring cell is measured to obtain a first beam measurement result.

In one embodiment, the action of the terminal for measuring the beam of the neighboring cell may be performed after receiving the trigger information of the serving cell, so that the controllability of the measurement action of the serving cell on the terminal may be improved.

The trigger information may be configuration indication information in the subsequent embodiment, or may be set as other information according to needs.

Fig. 5 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 5, in some embodiments of the present disclosure, the method further comprises:

in step S501, according to the configuration indication information sent by the serving cell, determining first configuration information of the reference signal sent by the neighboring cell;

wherein, the measuring the beam of the neighboring cell to obtain the first beam measurement result includes:

in step S502, the reference signal is received according to the first configuration information;

in step S503, the reference signal is measured to obtain the first beam measurement result.

In one embodiment, the terminal may measure the reference signal (e.g., CSI-RS, SSB) carried by the beam transmitted by the neighboring cell to obtain the first beam measurement result, but the terminal generally does not know the configuration of the reference signal transmitted by the neighboring cell, but the serving cell may know the configuration of the reference signal transmitted by the neighboring cell, so that the terminal may be instructed by the configuration instruction information to inform the terminal of the first configuration information of the reference signal transmitted by the neighboring cell, so that the terminal may receive the reference signal and perform measurement according to the first configuration information.

Fig. 6 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 6, in some embodiments of the present disclosure, the method further comprises

In step S601, receiving second configuration information sent by the serving cell;

wherein the sending the first beam measurement result to a serving cell includes:

in step S602, the first beam measurement result is sent to a serving cell according to the second configuration information.

In one embodiment, the serving cell may also send second configuration information to the terminal, where resources are configured for the terminal by using the second configuration information, so that the terminal sends the first beam measurement result to the serving cell at the configured resources.

Fig. 7 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 7, in some embodiments of the present disclosure, the method further comprises:

in step S701, in response to receiving the instruction of switching to the beam of the neighboring cell sent by the serving cell, information of data last received from the serving cell is sent to the neighboring cell before switching to the beam of the neighboring cell.

In one embodiment, after receiving the first beam measurement result, the serving cell may decide whether to allow the terminal to switch from the beam of the serving cell to the beam of the neighboring cell, that is, to receive signals from the beam passing through the serving cell to the beam passing through the neighboring cell, based on the first beam measurement result.

The disclosure also provides a communication method for measurement reporting, comprising: in response to determining that the terminal is within a geographic region where the serving cell and the neighbor cell overlap, measuring beams of the neighbor cell to obtain a first beam measurement result; and transmitting the first beam measurement result to a serving cell. Other embodiments and embodiments of the present method may be obtained by combining corresponding steps in other methods in the present disclosure, and are not described herein.

When determining that the terminal is allowed to switch from the beam of the serving cell to the beam of the neighbor cell, an indication may be sent to the terminal, and then the terminal may receive signals through the beam of the neighbor cell, in which case, before the terminal receives signals through the beam of the neighbor cell, information of data last received from the serving cell may be sent to the neighbor cell, so that the neighbor cell can determine what data the terminal has received, and further send subsequent data to the terminal, so as to avoid wasting communication resources by sending repeated data to the terminal.

Fig. 8 is a schematic flow chart diagram illustrating a communication method according to an embodiment of the present disclosure. The communication method shown in this embodiment may be applied to a base station, for example, a base station of a serving cell where a terminal is located, where the base station includes, but is not limited to, a 4G base station, a 5G base station, and a 6G base station. The base station may communicate with terminals as user devices, including but not limited to, cell phones, tablet computers, wearable devices, sensors, internet of things devices, and the like. In one embodiment, the terminal may be a terminal to which the communication method described in any of the foregoing embodiments is applicable.

As shown in fig. 8, the communication method may include the steps of:

in step S801, a first beam measurement result obtained by measuring a beam of a neighboring cell by a receiving terminal is received;

in step S802, downlink control information DCI is determined based on the first beam measurement result, where the DCI includes beam switching indication information, where the beam switching indication information is used to indicate whether the terminal switches to a beam of the neighboring cell;

in step S803, the beam switching instruction information is transmitted to the terminal.

As a specific implementation manner, when the terminal is able to receive that the signal strength of the serving cell beam is smaller than the first threshold value and that of the neighbor cell beam is larger than the second threshold value, the second threshold value may be equal to or unequal to the first threshold value, i.e. the terminal determines that it is currently in the overlapping geographical area of the serving cell and the neighbor cell. The technical solution of the present disclosure is not limited thereto, and is not described herein in detail.

In one embodiment, when the terminal determines to use the beam of the neighboring cell for communication according to the beam switching indication information, the beam of the neighboring cell may be used for communication in a state of residing in the serving cell.

In one embodiment, the measurement results of the beam, such as the first beam measurement result described above, and the second beam measurement result in the subsequent embodiment, may be obtained by measuring a reference signal carried by the beam, where the reference signal may be, for example, a channel state information reference signal CSI-RS, a synchronization signal block SSB, or the like; the measurement result may be represented by RSRP, SINR, or the like, for example, and is not limited thereto. It is understood that reference signals, wherever the terminal is enabled to obtain a reference measurement result by measuring it, are included in the scope of the present disclosure. Any technical parameter that may reflect the signal strength and/or signal quality of a reference signal may be considered to be within the scope of the present disclosure.

Fig. 9 is a schematic flow chart diagram illustrating another communication method according to an embodiment of the present disclosure. As shown in fig. 9, in some embodiments of the present disclosure, the method further comprises:

In step S901, in response to determining that the terminal switches to the beam of the neighboring cell, the terminal is instructed to switch to the beam of the neighboring cell, and the buffer data to be sent to the terminal is sent to the neighboring cell.

In one embodiment, when determining that the terminal is switched to the beam of the neighboring cell, the primary cell may instruct the terminal to switch to the beam of the neighboring cell, for example, send an instruction to the terminal, and may further send the buffer data to be sent to the terminal to the neighboring cell, so that after the terminal is switched to the beam of the neighboring cell, the neighboring cell can continue to send the buffer data to be sent to the terminal through the beam, without re-requesting the data to be sent to the terminal from the core network, which is beneficial to reducing the load of the core network.

Fig. 10 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 10, in some embodiments of the present disclosure, the method further comprises:

in step S1001, in response to determining that the terminal is handed over to the beam of the neighboring cell, estimating a target amount of data that the serving cell has sent to the terminal before the terminal is handed over to the beam of the neighboring cell;

In step S1002, among the buffered data to be transmitted to the terminal, other data than the target data amount is determined according to the transmission order of the buffered data;

in step S1003, the terminal is instructed to switch to the beam of the neighboring cell, and the other data is sent to the neighboring cell.

In one embodiment, since the serving cell determines that the terminal switches to the beam of the neighboring cell, the terminal does not switch to the beam of the neighboring cell immediately, but needs to wait for a period of time, for example, waiting for interaction of the neighboring cell in the serving cell, during which the terminal still needs to receive data through the beam of the serving cell, that is, when switching to the beam of the neighboring cell, the serving cell has a part (for example, the part is referred to as data a) of the buffered data to be sent to the terminal, and if the buffered data to be sent to the terminal is still sent to the neighboring cell and then sent to the terminal by the neighboring cell, the terminal will be caused to repeatedly receive part of the data, that is, repeatedly receive the data B.

In this regard, in the case where the serving cell determines that the terminal is handed over to the beam of the neighbor cell, the serving cell may first determine a target amount of data that the serving cell has transmitted to the terminal before the terminal is handed over to the beam of the neighbor cell. Further, among the buffered data to be transmitted to the terminal, other data than the target data amount, that is, data of the data amount having the preceding transmission order may be determined according to the transmission order of the buffered data.

In one embodiment, the target data amount may be estimated, for example, according to historical empirical data, or may be determined by negotiating with a neighboring base station, or may be indicated by a neighboring cell, or may be indicated by a core network.

In one embodiment, the predicting the target amount of data that the serving cell has sent to the terminal before the terminal switches to the beam of the neighbor cell comprises:

determining a rate at which the serving cell transmits data to the terminal, and determining a duration from the serving cell to the terminal switching to the neighboring cell;

and determining the target data volume according to the speed and the duration.

In one embodiment, the target data amount may be calculated according to a rate at which the serving cell transmits data to the terminal and a time period from when the serving cell determines that the terminal switches to the beam of the neighboring cell to when the terminal switches to the beam of the neighboring cell. Of course, it may be obtained in other ways, such as directly estimating the target data amount.

The rate at which the serving cell sends data to the terminal may be determined, e.g., referred to as R, and may be estimated, e.g., based on historical empirical data, or may be estimated based on the current channel conditions (e.g., channel quality, channel capacity, etc.) with which the terminal is currently communicating.

In addition, the time period from the determination of the beam from the serving cell to the determination of the terminal to the neighbor cell to the reception of data by the terminal through the beam from the neighbor cell, for example, referred to as T, may be estimated, estimated according to historical experience data, may be determined through negotiation with the neighbor base station, may be indicated by the neighbor cell, and may be indicated by the core network.

And further, the target data amount may be determined according to the rate and the duration, that is, the data amount of the data B is r×t, so that in the buffered data to be sent to the terminal, other data except the target data amount, that is, the data of the data amount with the front sending order, that is, the data B, may be determined in the data a, that is, other data except the data B, for example, referred to as the data C, and further, the terminal may be instructed to switch to the beam of the neighboring cell, and send the other data to the neighboring cell, so that the neighboring cell only needs to send other data to the terminal, that is, only needs to send the data C to the terminal, and does not need to send the data a to the terminal, thereby avoiding the terminal from repeatedly receiving the data B.

Fig. 11 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 11, in some embodiments of the present disclosure, the method further comprises:

In step S1101, in response to determining that the terminal switches to the beam of the neighboring cell, a request is sent to a core network to request the core network to send data to be sent to the terminal to the neighboring cell.

In one embodiment, when determining that the terminal is switched to the beam of the neighboring cell, the primary cell may send a request to the core network to request the core network to send data to be sent to the terminal to the neighboring cell, according to which the core network may send data to be sent to the terminal to the neighboring cell, and the terminal may receive all data to be sent to the terminal through the beam of the neighboring cell.

Fig. 12 is a schematic flow chart diagram illustrating yet another communication method according to an embodiment of the present disclosure. As shown in fig. 12, in some embodiments of the present disclosure, the method further comprises:

in step S1201, in response to determining that the terminal switches to the beam of the neighboring cell, the neighboring cell is instructed to request data from the core network to be transmitted to the terminal.

In one embodiment, when determining that the terminal is switched to the beam of the neighboring cell, the primary cell may send an indication to the neighboring cell to instruct the neighboring cell to request, from the core network, data to be sent to the terminal, thereby the core network may send the data to be sent to the terminal to the neighboring cell, and the terminal may receive all the data to be sent to the terminal through the beam of the neighboring cell.

It should be noted that, in the above embodiment, the data to be sent to the terminal in the core network may be all sent to the serving cell, or may be partially sent to the serving cell, and in the case that the data is partially sent to the serving cell, the core network may send another part of the data to be sent to the terminal, which is not yet sent to the serving cell, to the neighboring cell.

The disclosure also provides a communication method for receiving measurement results, which is applied to a base station and comprises the following steps: receiving a first beam measurement of a beam to a neighbor cell from a terminal, the first beam measurement transmitted by the terminal in response to being within a geographic region overlapping a serving cell and the neighbor cell associated with a base station; and determining Downlink Control Information (DCI) based on the first beam measurement result, wherein the DCI is associated with beam switching of the terminal. Other embodiments and embodiments of the present method may be obtained by combining corresponding steps in other methods in the present disclosure, and are not described herein.

The present disclosure also provides embodiments of a communication device corresponding to the foregoing communication methods and embodiments of the communication methods.

Fig. 13 is a schematic block diagram of a communication device shown in accordance with an embodiment of the present disclosure. The communication device shown in this embodiment may be suitable for a terminal, where the terminal includes, but is not limited to, an electronic device such as a mobile phone, a tablet computer, a wearable device, a sensor, and an internet of things device. The terminal may communicate as a user equipment with base stations including, but not limited to, 4G base stations, 5G base stations, 6G base stations. In one embodiment, the base station may be a base station to which the communication method described in any of the following embodiments is applicable.

As shown in fig. 13, the communication apparatus may include:

a beam measurement module 1301 configured to measure the beam of the neighboring cell to obtain a first beam measurement result;

a result transmitting module 1302 configured to transmit the first beam measurement result to a serving cell;

the indication receiving module 1303 is configured to receive downlink control information DCI, where the DCI includes beam switching indication information, where the beam switching indication information is used to indicate whether the terminal switches to a beam of the neighboring cell.

In some embodiments, the apparatus further comprises:

a beam selection module configured to communicate using a beam of the neighbor cell in response to determining that the beam switch indication information indicates the terminal to switch to the beam of the neighbor cell; or in response to determining that the beam switch indication information indicates that the terminal does not switch to the beam of the neighbor cell, communicating using the beam of the serving cell.

In some embodiments, the communication using beams of neighbor cells is performed in a state where the terminal is camping on the serving cell.

In some embodiments, the result transmitting module is configured to transmit the first beam measurement result to a serving cell in response to the first beam measurement result meeting a target condition.

In some embodiments, the target condition includes at least one of:

In some embodiments, the first beam measurement is a measurement of any beam of the neighbor cell.

In some embodiments, the second beam measurement is a measurement of a beam currently used by the serving cell for communication, or is a maximum result of each beam measurement for the serving cell.

In some embodiments, the result transmitting module is configured to periodically transmit the first beam measurement result to a serving cell.

In some embodiments, the beam measurement module is configured to measure the beam of the neighboring cell to obtain the first beam measurement result in response to receiving the trigger information sent by the serving cell.

Fig. 14 is a schematic block diagram of another communication device shown in accordance with an embodiment of the present disclosure. As shown in fig. 14, in some embodiments of the present disclosure, the apparatus further comprises:

a configuration determining module 1401, configured to determine, according to configuration indication information sent by the serving cell, first configuration information of the reference signal sent by the neighboring cell;

wherein the beam measurement module 1301 is configured to receive the reference signal according to the first configuration information; and measuring the reference signal to obtain the first beam measurement result.

Fig. 15 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure. As shown in fig. 15, in some embodiments of the present disclosure, the apparatus further comprises

A configuration receiving module 1501 configured to receive second configuration information sent by the serving cell;

wherein the result sending module 1302 is configured to send the first beam measurement result to a serving cell according to the second configuration information.

Fig. 16 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure. As shown in fig. 16, in some embodiments of the present disclosure, the apparatus further comprises:

a data transmitting module 1601 configured to, in response to receiving an instruction of switching to a beam of the neighboring cell sent by the serving cell, forward information of data last received from the serving cell to the neighboring cell before switching to the beam of the neighboring cell.

Fig. 17 is a schematic block diagram of a communication device shown in accordance with an embodiment of the present disclosure. The communication apparatus shown in this embodiment may be applied to a base station, for example, a base station of a serving cell where a terminal is located, where the base station includes, but is not limited to, a 4G base station, a 5G base station, and a 6G base station. The base station may communicate with terminals as user devices, including but not limited to, cell phones, tablet computers, wearable devices, sensors, internet of things devices, and the like. In one embodiment, the terminal may be a terminal to which the communication method described in any of the foregoing embodiments is applicable.

As shown in fig. 17, the communication apparatus may include:

a result receiving module 1701 configured to receive a first beam measurement result obtained by measuring a beam of a neighboring cell by the terminal;

An indication determining module 1702 configured to determine downlink control information DCI based on the first beam measurement result, where the DCI includes beam switching indication information, where the beam switching indication information is used to indicate whether the terminal switches to a beam of the neighboring cell;

an indication transmitting module 1703 configured to transmit the beam switching indication information to the terminal.

Fig. 18 is a schematic block diagram of another communication device shown in accordance with an embodiment of the present disclosure. As shown in fig. 18, the apparatus further includes:

a first handover indication module 1801 configured to instruct the terminal to handover to a beam of the neighboring cell in response to determining that the terminal is handed over to the beam of the neighboring cell;

a first data sending module 1802 configured to send buffered data to be sent to the terminal to the neighboring cell.

Fig. 19 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure. As shown in fig. 19, the apparatus further includes:

a parameter estimation module 1901 configured to estimate, in response to determining that the terminal is handed over to the beam of the neighboring cell, a target amount of data that the serving cell has sent to the terminal before the terminal is handed over to the beam of the neighboring cell;

A data determining module 1902 configured to determine, in the buffered data to be transmitted to the terminal, other data than the target data amount according to a transmission order of the buffered data;

a second handover indication module 1903 configured to instruct the terminal to handover to a beam of the neighbor cell;

a second data transmission module 1904 is configured to transmit the other data to the neighboring cell.

In one embodiment, the parameter estimation module is configured to estimate a rate at which the serving cell transmits data to the terminal, and determine a duration from the serving cell from a beam of the terminal switched to the neighboring cell to the terminal switched to the neighboring cell; and determining the target data volume according to the speed and the duration.

Fig. 20 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure. As shown in fig. 20, the apparatus further includes:

a request sending module 2001 configured to send a request to a core network to request the core network to send data to be sent to the terminal to the neighboring cell in response to determining that the terminal is switched to the beam of the neighboring cell.

Fig. 21 is a schematic block diagram of yet another communication device shown in accordance with an embodiment of the present disclosure. As shown in fig. 21, the apparatus further includes:

A request indication module 2101 configured to indicate, in response to determining that the terminal is handed over to a beam of the neighboring cell, that the neighboring cell requests data from the core network to be transmitted to the terminal.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the related methods, and will not be described in detail herein.

For the device embodiments, reference is made to the description of the method embodiments for the relevant points, since they essentially correspond to the method embodiments. The apparatus embodiments described above are merely illustrative, wherein the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

The embodiment of the disclosure also proposes an electronic device, including:

A processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the communication method according to any of the embodiments described above, and/or the communication method according to any of the embodiments described above.

Embodiments of the present disclosure also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the communication method described in any of the above embodiments, and/or the steps in the communication method described in any of the above embodiments.

As shown in fig. 22, fig. 22 is a schematic block diagram illustrating an apparatus 2200 for handover indication according to an embodiment of the present disclosure. The apparatus 2200 may be provided as a base station. Referring to fig. 22, the apparatus 2200 includes a processing component 2222, a wireless transmission/reception component 2224, an antenna component 2226, and a signal processing part specific to a wireless interface, and the processing component 2222 may further include one or more processors. One of the processors in the processing component 2222 may be configured to implement the communication methods described in any of the embodiments above.

Fig. 23 is a schematic block diagram of a communication device 2300, shown in accordance with an embodiment of the disclosure. For example, apparatus 2300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, or the like.

Referring to fig. 23, apparatus 2300 may comprise one or more of the following components: processing components 2302, memory 2304, power components 2306, multimedia components 2308, audio components 2310, input/output (I/O) interfaces 2312, sensor components 2314 and communication components 2316.

The processing component 2302 generally controls overall operation of the device 2300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 2302 may include one or more processors 2320 to execute instructions to perform all or part of the steps of the communication methods described above. Further, the processing component 2302 may include one or more modules that facilitate interactions between the processing component 2302 and other components. For example, the processing component 2302 may include a multimedia module to facilitate interaction between the multimedia component 2308 and the processing component 2302.

The memory 2304 is configured to store various types of data to support operations at the device 2300. Examples of such data include instructions for any application or method operating on device 2300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 2304 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 2306 provides power to the various components of the device 2300. The power supply components 2306 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 2300.

The multimedia component 2308 includes a screen between the device 2300 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, multimedia component 2308 includes a front-facing camera and/or a rear-facing camera. When the device 2300 is in an operation mode, such as a photographing mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

Audio component 2310 is configured to output and/or input audio signals. For example, audio component 2310 includes a Microphone (MIC) configured to receive external audio signals when device 2300 is in an operational mode, such as a call mode, a recording mode, and a speech recognition mode. The received audio signals may be further stored in memory 2304 or transmitted via communications component 2316. In some embodiments, audio assembly 2310 also includes a speaker for outputting audio signals.

The I/O interface 2312 provides an interface between the processing element 2302 and a peripheral interface module, which may be a keyboard, click wheel, button, or the like. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 2314 includes one or more sensors for providing status assessment of various aspects of the apparatus 2300. For example, the sensor assembly 2314 may detect an on/off state of the device 2300, a relative positioning of the components, such as a display and keypad of the device 2300, a change in position of the device 2300 or a component of the device 2300, the presence or absence of a user's contact with the device 2300, an orientation or acceleration/deceleration of the device 2300, and a change in temperature of the device 2300. The sensor assembly 2314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 2314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 2314 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 2316 is configured to facilitate communication between apparatus 2300 and other devices in a wired or wireless manner. The device 2300 may access a wireless network based on a communication standard, such as WiFi,2G or 3G,4G LTE, 5G NR, or a combination thereof. In one exemplary embodiment, communication component 2316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 2316 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 2300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for performing the above-described communication methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium is also provided, such as memory 2304, comprising instructions executable by processor 2320 of apparatus 2300 to perform the above-described communication method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing has outlined the detailed description of the method and apparatus provided by the embodiments of the present disclosure, and the detailed description of the principles and embodiments of the present disclosure has been provided herein with the application of the specific examples, the above examples being provided only to facilitate the understanding of the method of the present disclosure and its core ideas; meanwhile, as one of ordinary skill in the art will have variations in the detailed description and the application scope in light of the ideas of the present disclosure, the present disclosure should not be construed as being limited to the above description.

Claims

1. A communication method performed by a terminal, the method comprising:

transmitting the first beam measurement result to a serving cell;

receiving Downlink Control Information (DCI), wherein the DCI comprises beam switching indication information, and the beam switching indication information is used for indicating whether the terminal switches to a beam of the neighbor cell;

and in response to determining that the beam switching indication information indicates the terminal to switch to the beam of the adjacent cell, communicating by using the beam of the adjacent cell in a state of residing in the service cell.

2. The method according to claim 1, wherein the method further comprises:

3. The method of claim 1, wherein the transmitting the first beam measurement to a serving cell comprises:

and transmitting the first beam measurement result to a serving cell in response to the first beam measurement result meeting a target condition.

4. A method according to claim 3, wherein the target condition comprises at least one of:

5. The method of claim 1, wherein the first beam measurement is a measurement of any beam of the neighbor cell.

6. The method of claim 4, wherein the second beam measurement is a measurement of a beam currently used by the serving cell for communication or is a maximum result of measurement of each beam of the serving cell.

7. The method of claim 1, wherein the transmitting the first beam measurement to a serving cell comprises:

the first beam measurement is periodically transmitted to a serving cell.

8. The method according to any of claims 1 to 7, wherein said measuring beams of neighbor cells to obtain a first beam measurement result comprises:

and responding to the received triggering information sent by the service cell, and measuring the wave beams of the adjacent cells to obtain a first wave beam measurement result.

9. The method according to any one of claims 1 to 7, further comprising:

determining first configuration information of the reference signal sent by the neighbor cell according to the configuration indication information sent by the serving cell;

receiving the reference signal according to the first configuration information;

And measuring the reference signal to obtain the first beam measurement result.

10. The method according to any one of claims 1 to 7, further comprising

Receiving second configuration information sent by the service cell;

and sending the first beam measurement result to a serving cell according to the second configuration information.

11. The method according to any one of claims 1 to 7, further comprising:

and in response to receiving the indication of the beam which is transmitted by the service cell and is switched to the adjacent cell, transmitting information of data which is finally received from the service cell to the adjacent cell before the beam which is switched to the adjacent cell.

12. A method of communication, performed by a base station, the method comprising:

receiving a first beam measurement result obtained by measuring beams of neighbor cells of a serving cell by a terminal;

And sending the beam switching indication information to the terminal, wherein when the beam switching indication information indicates that the terminal is switched to the beam of the adjacent cell, the beam of the adjacent cell is used for the terminal to communicate in the state of residing in the service cell.

13. The method according to claim 12, wherein the method further comprises:

and in response to determining the beam of the terminal switched to the adjacent cell, indicating the beam of the terminal switched to the adjacent cell, and sending the buffer data to be sent to the terminal to the adjacent cell.

14. The method according to claim 12, wherein the method further comprises:

responsive to determining a beam of the terminal to switch to the neighbor cell, estimating a target amount of data that the serving cell has sent to the terminal before the terminal switches to the beam of the neighbor cell;

among the cache data to be transmitted to the terminal, determining other data except the target data amount according to the transmission sequence of the cache data;

and indicating the terminal to switch to the wave beam of the adjacent cell, and sending the other data to the adjacent cell.

15. The method of claim 14, wherein the predicting the target amount of data that the serving cell has sent to the terminal before the terminal switches to the beam of the neighbor cell comprises:

estimating the data sending rate of the service cell to the terminal, and determining the time length from the beam of the terminal switched to the adjacent cell to the switching of the terminal to the adjacent cell from the service cell;

and determining the target data volume according to the speed and the duration.

16. The method according to claim 12, wherein the method further comprises:

and responding to the beam of the terminal switched to the adjacent cell, and sending a request to a core network to request the core network to send the data to be sent to the terminal to the adjacent cell.

17. The method of claim 16, wherein the method further comprises:

and in response to determining that the terminal is switched to the beam of the adjacent cell, indicating the adjacent cell to request data to be sent to the terminal from the core network.

18. A communication terminal, characterized in that the communication terminal comprises:

an instruction receiving module, configured to receive downlink control information DCI, where the DCI includes beam switching instruction information, where the beam switching instruction information is used to instruct whether the communication terminal switches to a beam of the neighboring cell;

and the beam selection module is used for carrying out communication by using the beams of the adjacent cells in a state of residing in the service cell in response to determining that the beam switching indication information indicates the communication terminal to switch to the beams of the adjacent cells.

19. A base station for use in a serving cell, the base station comprising:

and the indication sending module is configured to send the beam switching indication information to the terminal, wherein when the beam switching indication information indicates the terminal to switch to the beam of the adjacent cell, the beam of the adjacent cell is used for the terminal to communicate in the state of residing in the service cell.

20. A communication device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the communication method of any one of claims 1 to 11, and/or the communication method of any one of claims 12 to 17.

21. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method of any one of claims 1 to 11 and/or the steps of the method of any one of claims 12 to 17.