Patent Application
20240292278
The present application relates to the field of communication, and in particularly to methods and apparatuses for group handover, devices, and a storage medium.
Traditional wireless communication adopts a cellular network communication mode, that is, a terminal and a network side device transmit uplink and downlink data/control information through a Uu interface. In order to extend network coverage, one solution is to introduce a relay from a user equipment (UE) to a network, namely a UE-to-network (U2N) relay. The U2N relay can be a terminal with relay function. For the U2N relay, the Uu interface is used between the relay (that is, a relay terminal) and the network, a direct communication interface is used between the relay and a relayed terminal (which can be called as a remote terminal), and the link between the relay and the network can be called as a backhaul link for the remote terminal.
After a relay scenario is introduced, in some cases (for example, the remote terminal is a wearable device, and the relay terminal is a mobile phone of a user of the wearable device), the remote terminal and the relay terminal always move together. Therefore, how to support the relay terminal and the remote terminal served by the relay terminal to perform group handover together has become an urgent problem that needs to be solved.
In order to solve problems in the related arts, embodiments of the present application provide methods and apparatuses for group handover, devices, and a storage medium.
An embodiment of the present application provides a method for group handover, applied to a source network device, including:
In an embodiment, the first indication information includes one or more of the following:
a group identifier;
In an embodiment, the method further includes:
In an embodiment, the method further includes:
In an embodiment, in case of receiving the measurement report result only from the intra-group relay terminal, the method further includes:
In an embodiment, in case of receiving the measurement report result from all or part of the intra-group member terminals, the method further includes:
In an embodiment, the method further includes:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the handover request message further includes third indication information that changes intra-group relay terminal;
In an embodiment, the method further includes:
An embodiment of the present application further provides a method for group handover, applied to a target network device, including:
In an embodiment, after receiving the handover request message transmitted from the source network device, the method further includes any one of the following:
In an embodiment, the handover request message further includes a measurement result from intra-group member terminals for a target cell:
In an embodiment, the handover request acknowledgement message includes sixth indication information that indicates a new intra-group relay terminal.
In an embodiment, the handover request acknowledgement message further includes one or more of the following:
An embodiment of the present application further provides a method for group handover, applied to a terminal, including:
In an embodiment, in case that the measurement configuration only allows intra-group relay terminal to perform measurement report, the transmitting the measurement report message to the source network device includes:
In an embodiment, in case that the terminal is an intra-group relay terminal, the measurement report message includes a measurement result from the intra-group relay terminal and a measurement result from other intra-group member terminals;
In an embodiment, the measurement result from other intra-group member terminals is obtained through a direct communication interface periodic interaction or an event-triggered interaction, a trigger event includes one or more of the following:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the method further includes:
In an embodiment, the method further includes:
An embodiment of the present application further provides a source network device, including a memory, a transceiver and a processor, where
An embodiment of the present application further provides a target network device, including a memory, a transceiver and a processor, where the memory is used to store a computer program;
An embodiment of the present application further provides a terminal, including a memory, a transceiver and a processor, where
An embodiment of the present application further provides an apparatus for group handover, applied to a source network device, including:
An embodiment of the present application further provides an apparatus for group handover, applied to a target network device, including:
An embodiment of the present application further provides an apparatus for group handover, applied to a terminal, including:
An embodiment of the present application provides a processor readable storage medium storing computer programs that, when executed by a processor, cause the processor to perform steps of the above-mentioned method for group handover.
In the methods and apparatuses for group handover, devices, and a storage medium provided by the embodiments of the present application, after performing the handover decision to determine to perform the group handover, the source network device can transmit the handover request message to the target network device. The handover request message carries the first indication information that indicates the terminal group, which supports the intra-group relay terminal and the intra-group remote terminal served by the intra-group relay terminal to perform group handover together, and the problem of group handover in the U2N relay communication is solved.
In order to illustrate the solutions of the embodiments according to the present application or the related art, the accompanying drawings used in the description of the embodiments or the related art are briefly introduced below. It should be noted that the drawings in the following description are only some embodiments of the present application.
In the embodiments of the present application, the term “and/or” describes a related relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can represent that A exists alone, A and B exist simultaneously, and B exists alone. Character “/” generally indicates that the associated objects have an “or” relationship.
In the embodiments of the present application, the term “multiple” refers to two or more, and other quantifiers are similar.
The solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. These embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
In order to facilitate clearer understanding of each embodiment of the present application, some related background knowledge is introduced as follows.
Bearers in a relay scenario can be divided into the following three categories:
Connections in a relay scenario can be divided into the following two categories:
Currently, there is no clear solution regarding a group handover in a scenario that a relay is introduced. The present application provides a solution that supports a relay terminal and a remote terminal served by the relay terminal to perform group handover together, which can solve the problem of group handover in a UE-to-network (U2N) relay communication.
Step 400: performing a handover decision.
In an embodiment, before performing a group handover, a source network device connected to a terminal performs the handover decision, for example, determines to perform the group handover or a single terminal handover, or determines to hand over the terminal from the source network device to which target network device (such as a target base station), etc. The specific manner of handover decision depends on the implementation of the source network device and is not limited herein.
Step 401: after determining to perform the group handover, transmitting a handover request message to the target network device, where the handover request message carries first indication information that indicates a terminal group.
In an embodiment, after performing the handover decision to determine to perform the group handover, the source network device can transmit the handover request message to the target network device. The handover request message carries the first indication information that indicates the terminal group.
In an embodiment, the first indication information may include one or more of the following:
It should be noted that, the intra-group member terminals in group communication include the intra-group relays terminal and the intra-group remote terminal. For example, one terminal group may include one intra-group relay terminal and one or more intra-group remote terminals. Further, one terminal group may include more than one intra-group relay terminals.
In the method for group handover according to an embodiment of the present application, after performing the handover decision to determine to perform the group handover, the source network device can transmit the handover request message to the target network device. The handover request message carries the first indication information that indicates the terminal group, which supports the intra-group relay terminal and the intra-group remote terminal served by the intra-group relay terminal to perform group handover together, and the problem of group handover in the U2N relay communication is solved.
In an embodiment, the method further includes:
In an embodiment, the terminal can measure based on configuration from the source network device, and report a measurement result to the source network device in case that a measurement report trigger condition is satisfied. After receiving the measurement report message from the terminal, the source network device can perform the handover decision based on the measurement report message.
In the method according to an embodiment of the present application, the source network device can perform the handover decision based on the measurement report message from the terminal, which makes process of the handover decision more accurate, and may better support the intra-group relay terminal and the intra-group remote terminal served by the intra-group relay terminal to perform group handover together.
In an embodiment, the method further includes:
In an embodiment, for the measurement report of group handover, only the intra-group relay terminal can perform measurement report, or all or part of the intra-group member terminals can perform measurement report.
The source network device may receive the measurement report result only from the intra-group relay terminal, or from all or part of the intra-group member terminals, which can be implemented by a measurement configuration transmitted from the source network device to the terminal.
In an embodiment, in case of receiving the measurement report result only from intra-group relay terminal, the method further includes:
In an embodiment, in case that the intra-group relay terminal is required to perform the measurement report, the source network device can only transmit the measurement configuration to the intra-group relay terminal, that is, the intra-group relay terminal only performs the measurement report based on the measurement configuration, without configuring the measurement report for the intra-group remote terminal. Once the intra-group relay terminal is changed, it need to be indicated to the source network device and the source network device can change the measurement configuration.
The source network device can also transmit the measurement configuration to all or part of the intra-group member terminals, that is, the source network device configures measurement report for all or part of the intra-group member terminals. However, only the intra-group relay terminal is allowed to perform the measurement report. That is, if an intra-group member terminal is not a relay terminal, the measurement report is not allowed.
In an embodiment, in case that all or part of the intra-group member terminals perform the measurement report, the method further includes:
In an embodiment, in case that all or part of the intra-group member terminals perform the measurement report, the source network device can transmit the measurement configuration to each intra-group member terminal that is required to perform the measurement report, the intra-group member terminals can measure based on the configuration from the source network device. In case that the measurement report trigger condition is satisfied, the intra-group member terminals report the measurement result to the source network device.
In an embodiment, the method further includes:
In an embodiment, when the source network device can configure that the intra-group relay terminal or the intra-group member terminals also need to report the measurement result from other member terminals when reporting its the measurement result, be ed. After receiving the measurement report message transmitted from the intra-group relay terminal or the intra-group member terminals, the source network device can perform the handover decision based on the measurement result from the intra-group relay terminal carried by the measurement report message, or the measurement result from the intra-group member terminals carried by the measurement report message, or the measurement result from the other intra-group member terminals carried by the measurement report message.
In an embodiment, the measurement result from other intra-group member terminals may be obtained by the intra-group relay terminal that performs measurement report through a direct communication interface, or may be obtained by the intra-group member terminals through a direct communication interface. The measurement result from other intra-group member terminals can be obtained through a direct communication interface periodic interaction or an event-triggered interaction. The trigger events may include one or more of the following:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the terminal may carry the second indication information in the measurement report message. The second indication information is used for indicating the handover type that the terminal expects to perform. For example, the handover type that the terminal expects to perform may be group handover or single terminal handover. After receiving the measurement report message, the source network device may perform the handover decision based on the second indication information in the measurement report message.
In an embodiment, the handover request message further includes third indication information that changes the intra-group relay terminal;
In an embodiment, after receiving the measurement result from the intra-group relay terminal or the measurement result from the intra-group member terminals, and the measurement result from the other member terminals, the source network device may, based on the measurement result, determine to change the intra-group relay terminal, and include the third indication information that changes the intra-group relay terminal in the handover request message transmitted to the target network device. The third indication information may include identifier information of a current intra-group relay terminal and identifier information of a changed intra-group relay terminal expected by the source network device.
The source network device may also carry the measurement result of the intra-group member terminals for the target cell in the handover request message, and transmit it to the target network device. The target network device may determine whether to change the intra-group relay terminal based on the measurement result.
In an embodiment, the method further includes:
In an embodiment, after receiving the handover request message transmitted from the source network device, the target network device may perform a group admission decision and respond a handover request acknowledgement message to the source network device. After receiving the handover request acknowledgement message, the source network device may perform one or more of the following operations:
After the source network device notifying other intra-group member terminals of the new intra-group relay terminal through the source intra-group relay terminal, the intra-group member terminals may release a direct communication connection with the source intra-group relay terminal and establish a direct communication connection with the new intra-group relay terminal.
In an embodiment, after completing random access to the target network device or transmitting a RRC reconfiguration complete message to the target network device, transmit indication information to the intra-group member terminals. The indication information is used for indicating that the intra-group member terminals may transmit the RRC reconfiguration complete message to the target network device through the intra-group relay terminal.
Step 500: receiving a handover request message transmitted from a source network device, where the handover request message carries first indication information that indicates a terminal group.
In an embodiment, after performing a group handover decision to determine to perform the group handover, the source network device (such as a source base station) may transmit a handover request message to a target network device. The handover request message carries the first indication information that indicates the terminal group. The target network device receives the handover request message transmitted from the source network device, and perform a group admission decision.
In an embodiment, the first indication information may include one or more of the following:
In the method for group handover, after performing the handover decision to determine to perform the group handover, the source network device may transmit the handover request message to the target network device, where the handover request message carries the first indication information that indicates the terminal group, which supports the intra-group relay terminal and the intra-group remote terminal served by the intra-group relay terminal to perform the group handover together, and the problem of group handover in the U2N relay communication is solved.
In an embodiment, after receiving the handover request message transmitted from the source network device, the method further includes any one of the following:
In an embodiment, after receiving the handover request message transmitted from the source network device, the target network device may perform the group admission decision in one of the following modes:
In an embodiment, the handover request acknowledgement message may include one or more of the following:
In an embodiment, the handover request message further includes a measurement result of the intra-group member terminals for the target cell:
In an embodiment, the source network device may configure that the intra-group relay terminal or the intra-group member terminals also need to report the measurement result from other member terminals when reporting its the measurement result. After receiving the measurement report message transmitted from the intra-group relay terminal or the intra-group member terminals, the source network device may carry the measurement result from the intra-group member terminals for the target cell in the handover request message, and transmit the handover request message to the target network device, and the target network device may determine whether to change the intra-group relay terminal based on the measurement result.
In an embodiment, the handover request acknowledgement message further includes sixth indication information that indicates a new intra-group relay terminal.
In an embodiment, in case that the target network device changes the intra-group relay terminal, the handover request acknowledgement message transmitted from the target network device to the source network device may further include the sixth indication information that indicates the new intra-group relay terminal.
Step 600: transmitting a measurement report message to a source network device based on a received measurement configuration.
In an embodiment, a terminal may be an intra-group relay terminal in group communication or an intra-group remote terminal in group communication. The terminal may perform measurement based on a configuration from the source network device. In case that a measurement report trigger condition is satisfied, the terminal transmits a measurement message to the source network device based on the measurement configuration. As such, after receiving the measurement report message transmitted from the terminal, the source network device may perform a handover decision based on the measurement report message.
In the method according to an embodiment of the present application, the source network device may perform the handover decision based on the measurement report message from the terminal, which makes process of the handover decision more accurate, and may better support the intra-group relay terminal and the intra-group remote terminal served by the intra-group relay terminal to perform group handover together.
In an embodiment, in case that the measurement configuration only allows the intra-group relay terminal to perform measurement report, the transmitting the measurement report message to the source network device includes:
In an embodiment, in case that the source network device only allows the intra-group relay terminal to perform measurement report, the source network device may transmit the measurement configuration only to the intra-group relay terminal, or may transmit the measurement configuration to all or part of the intra-group member terminals, and only allows the intra-group relay terminal to perform measurement report. As such, in case that the terminal is the intra-group relay terminal, the intra-group relay terminal transmits the measurement report message to the source network device.
In an embodiment, in case that the terminal is the intra-group relay terminal, the measurement report message includes a measurement result from the intra-group relay terminal and the measurement result from other intra-group member terminals: or.
In an embodiment, the source network device may configure that the intra-group relay terminal or the intra-group remote terminal also needs to report the measurement result from other intra-group member terminals when reporting its measurement result. After receiving measurement report message transmitted from the intra-group relay terminal or the intra-group remote terminal, the source network device may perform the handover decision based on the measurement result from the intra-group relay terminal or the measurement result from the intra-group remote terminal, and the measurement result from other intra-group member terminals, which are carried in the measurement report message.
In an embodiment, the measurement result from other intra-group member terminals can be obtained through a direct communication interface periodic interaction or an event-triggered interaction. The trigger event may include one or more of the following:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the terminal may carry the second indication information in the measurement report message. The second indication information is used for indicating the handover type that the terminal expects to perform. For example, the handover type that the terminal expects to perform may be the group handover or the single terminal handover. After receiving the measurement report message, the source network device may perform the handover decision based on the second indication information carried in the measurement report message.
In an embodiment, the method further includes:
In an embodiment, after receiving a handover request message transmitted from the source network device, a target network device may perform a group admission decision, and respond a handover request acknowledgement message to the source network device. After receiving the handover request acknowledgement message, the source network device may perform one or more of the following operations:
After the source network device notifies other intra-group member terminals of the new intra-group relay terminal through the source intra-group relay terminal, the intra-group member terminals may release the direct communication connection with the source intra-group relay terminal, and establish the direct connection with the new intra-group relay terminal.
In an embodiment, the method further includes:
In an embodiment, after completing random access to the target network device or transmitting the RRC reconfiguration complete message to the target network device, the intra-group relay terminal may transmit the seventh indication information to the intra-group member terminals. The seventh indication information is used for indicating that the intra-group member terminal may transmit the RRC reconfiguration complete message to the target network device through the intra-group relay terminal.
Step 700: a grouping procedure.
In an embodiment, the grouping procedure can adopt a traditional high-layer grouping procedure, or adopt a new grouping procedure, which is not limited herein.
Step 701: performing a measurement report by a relay terminal.
In an embodiment, the relay terminal performs measurement based on a configuration from the source network device, and reports a measurement result to the source network device when a measurement report trigger condition is satisfied.
In this embodiment, only an intra-group relay terminal need to perform the measurement report, which may be implemented by one of the following modes:
In an embodiment, the relay terminal may carry indication information in the measurement report. The indication information is used for indicating that the relay terminals expect to perform whether a group handover or a relay terminal handover.
Step 702: the source network device performs a handover decision.
In an embodiment, after receiving the measurement report from the relay terminals, in case that the measurement report indicates group handover, the source network device performs the group handover decision. How to determine a target cell depends on implementation of the source network device.
Step 703: the source network device transmits a handover request message to the target network device.
In an embodiment, the source network device performs the handover decision, in case that the group handover is performed, the source network device needs to transmit the handover request message to the target network device, the handover request message at least carries one or more of the following:
Step 704: the target network device transmits a handover request acknowledgement message to the source network device.
In an embodiment, the target network device performs a group admission decision, which may be performed by one of the following modes:
Except for the above-mentioned content, the handover request acknowledgement message further includes one or more of the following:
Step 705: the source network device performs a radio resource control (RRC) reconfiguration on the relay terminal.
In an embodiment, the source network device transmits the RRC reconfiguration message to the relay terminal, and triggers the relay terminal to initiate a handover process.
Step 706: the relay terminal initiates a random access procedure to the target network device.
Step 707: the relay terminal transmits a RRC reconfiguration complete massage to the target network device.
Step 708: the source network device performs a RRC reconfiguration to other intra-group member terminals.
In an embodiment, the above-mentioned steps 708, 705, 706 and 707 are not sequential, and can be performed in parallel.
In an embodiment, for an end-to-end bearer that is not admissible by the target network device, a corresponding intra-group member terminal need to release the end-to-end bearer, and release a corresponding direct communication interface bearer.
Step 709: the relay terminal transmits indication information to other intra-group member terminals.
In an embodiment, after completing random access to the target network device or transmitting a RRC reconfiguration complete message to the target network device, the relay terminal transmits the indication information to other intra-group member terminals. The indication information is used for indicating that other intra-group member terminals are able to transmit the RRC reconfiguration complete message to the target network device through the relay terminal.
Step 710: the intra-group member terminals transmit the RRC reconfiguration complete message to the target network device through the relay terminal.
Step 800: a grouping procedure.
In an embodiment, the grouping procedure can adopt a traditional high-layer grouping procedure, or adopt a new grouping procedure, which is not limited herein.
Step 801: performing a measurement report by a relay terminal or performing a measurement report by intra-group member terminals.
In an embodiment, taking the measurement reporting by the relay terminal as an example, the relay terminal performs measurement based on a configuration from the source network device, and reports a measurement result to the source network device when a measurement report trigger condition is satisfied.
In an embodiment, the relay terminals may a support additional measurement report, that is, when reporting the measurement result to network device, the relay terminal needs to carry a measurement result from other intra-group member terminals. The measurement result from other intra-group member terminals can be obtained by a direct communication interface periodic interaction or an event-triggered interaction. The trigger event may be, but not limited to, one of the following:
In an embodiment, the relay terminal may carry indication information in the measurement report, which indicates that the relay terminal expects to perform whether a group handover or a relay terminal handover.
Step 802: the source network device performs a handover decision.
In an embodiment, after receiving the measurement report from the relay terminals, in case that the measurement report indicates group handover, the source network device performs the group handover decision. How to determine a target cell depends on implementation of the source network device.
In an embodiment, in this step, the source network device is allowed to change the intra-group relay terminal when transmitting the handover request to the target network device.
Step 803: the source network device transmits a handover request message to the target network device.
In an embodiment, the source network device performs the handover decision, in case that the group handover is performed, the source network device need to transmit the handover request message to the target network device, the handover request message at least carries one or more of the following:
In an embodiment, when transmitting the handover request message to the target network device, the source network device may carry the measurement result from the intra-group member terminals for a target cell in the handover request message. The target network device may change the intra-group relay terminal based on the measurement result.
Step 804: the target network device transmits a handover request acknowledgement message to the source network device.
In an embodiment, the target network device performs a group admission decision, which may be performed by one of the following modes:
Except for the above-mentioned content, the handover request acknowledgement message further includes one or more of the following:
Step 805: the source network device performs a radio resource control (RRC) reconfiguration on the relay terminal selected by the target network device.
In an embodiment, the source network device transmits the RRC reconfiguration message to the relay terminals selected by the target network device, and triggers the relay terminals to initiate a handover process.
In case that the relay terminal selected by the target network device is different from a source relay terminal, that is, the relay terminal is changed, the source network device notifies other intra-group member terminals of a new relay terminal through the source relay terminal; and
Step 806: the relay terminals selected by the target network device initiates a random access procedure to the target network device.
Step 807: the relay terminal selected by the target network device transmits a radio resource control (RRC) reconfiguration complete massage to the target network device.
Step 808: the source network device performs a RRC reconfiguration to other intra-group member terminals.
In an embodiment, the above-mentioned steps 808, 805, 806 and 807 are not sequential, and can be performed in parallel.
In an embodiment, for an end-to-end bearer that is not admissible by the target network device, a corresponding intra-group member terminal need to release the end-to-end bearer, and release a corresponding direct communication interface bearer.
Step 809: the relay terminals selected by the target network device transmits indication information to other intra-group member terminals.
In an embodiment, after completing random access to the target network device or transmitting a RRC reconfiguration complete message to the target network device, the relay terminal selected by the target network device transmits the indication information to other intra-group member terminals. The indication information is used for indicating that other intra-group member terminals are able to transmit the RRC reconfiguration complete message to the target network device through the relay terminal.
Step 810: the intra-group member terminals transmit the RRC reconfiguration complete message to the target network device through the relay terminal selected by the target network device.
The methods and apparatuses according to the embodiments of the present application are based on the same concept. Since the principle of the methods and the apparatuses for solving the problem is similar, the implementation of the methods and the apparatuses can refer to each other, which is not repeated herein.
The memory 920 is used for storing computer programs; and the transceiver 910 is used for transmitting and receiving data under control of the processor 900.
In an embodiment, the transceiver 910 is used for transmitting and receiving data under control of the processor 900.
In
The processor 900 is used for managing the bus architecture and general processing. The memory 920 may store data used by the processor 900 in case of performing operations.
The processor 900 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.
Computer programs stored in the memory 920, when executed by the processor 900, cause the source network device to perform any of the methods provided by the embodiments in the present application based on obtained executable instructions. For example, the method includes: performing a handover decision: after determining to perform the group handover, transmitting a handover request message to the target network device, where the handover request message carries first indication information that indicates a terminal group. In an embodiment, the first indication information includes one or more of the following:
In an embodiment, the method further includes:
In an embodiment, the method further includes:
In an embodiment, in case of receiving the measurement report result only from the intra-group relay terminal, the method further includes:
In an embodiment, in case of receiving the measurement report result from all or part of the intra-group member terminals, the method further includes:
In an embodiment, the method further includes:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the handover request message further includes third indication information that changes the intra-group relay terminal;
In an embodiment, the method further includes:
The memory 1020 is used for storing computer programs; and the transceiver 1010 is used for transmitting and receiving data under control of the processor 1000.
In an embodiment, the transceiver 1010 is used for transmitting and receiving data under control of the processor 1000.
In
The processor 1000 is used for managing the bus architecture and general processing. The memory 1020 may store data used by the processor 1000 in case of performing operations.
The processor 1000 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.
Computer programs stored in the memory 1020, when executed by the processor 1000, cause the target network device to perform any of the method provided by the embodiments in the present application based on obtained executable instructions. For example, the method includes: receiving a handover request message transmitted from a source network device, where the handover request message carries first indication information that indicates a terminal group.
In an embodiment, after receiving the handover request message transmitted from the source network device, the method further includes any one of the following:
In an embodiment, the handover request message further includes a measurement result from intra-group member terminals for a target cell:
In an embodiment, the handover request acknowledgement message includes sixth indication information that indicates a new intra-group relay terminal.
In an embodiment, the handover request acknowledgement message may include one or more of the following:
The memory 1120 is used for storing computer programs: the transceiver 1110 is used for transmitting and receiving data under control of the processor 1100.
In an embodiment, the transceiver 1110 is used for transmitting and receiving data under control of the processor 1100.
In
The processor 1100 is used for managing the bus architecture and general processing. The memory 1120 may store data used by the processor 1100 in case of performing operations.
The processor 1100 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.
Computer programs stored in the memory 1120, when executed by the processor 1100, cause the terminal to perform any of the method provided by the embodiments in the present application based on obtained executable instructions. For example, the method includes: transmitting a measurement report message to a source network device based on a received measurement configuration.
In an embodiment, in case that the measurement configuration only allows the intra-group relay terminal to perform measurement report, the transmitting the measurement report message to the source network device includes:
In an embodiment, in case that the terminal is an intra-group relay terminal, the measurement report message includes a measurement result from the intra-group relay terminal and the measurement result from other intra-group member terminals: or, in case that the terminal is an intra-group remote terminal, the measurement report message includes a measurement result from the intra-group remote terminal and a measurement result from other intra-group member terminals.
In an embodiment, the measurement result from other intra-group member terminals can be obtained through a direct communication interface periodic interaction or an event-triggered interaction. The trigger event may include one or more of the following:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the method further includes:
In an embodiment, the method further includes:
It should be noted that the source network device, the target network device and the terminal in the embodiments of the present application can implement all the methods provided by the above-mentioned embodiments and achieve the same effect. The same parts and beneficial effects as the method embodiments are not repeated herein.
In an embodiment, the first indication information includes one or more of the following:
In an embodiment, the decision unit 1200 is further used for:
In an embodiment, the decision unit 1200 is further used for:
In an embodiment, in case of receiving the measurement report result only from the intra-group relay terminal, the first transmitting unit 1210 is further used for:
In an embodiment, in case of receiving the measurement report result from all or part of the intra-group member terminals, the first transmitting unit 1210 is further used for:
In an embodiment, the decision unit 1200 is further used for:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the handover request message further includes third indication information that changes the intra-group relay terminal;
In an embodiment, the first transmitting unit 1210 is further used for:
In an embodiment, the apparatus further includes:
In an embodiment, the handover request message further includes a measurement result from intra-group member terminals for a target cell:
In an embodiment, the handover request acknowledgement message includes sixth indication information that indicates a new intra-group relay terminal.
In an embodiment, the handover request acknowledgement message may include one or more of the following:
In an embodiment, in case that the measurement configuration only allows an intra-group relay terminal to perform measurement report, the third transmitting unit 1400 is used for:
In an embodiment, in case that the terminal is the intra-group relay terminal, the measurement report message includes a measurement result from the intra-group relay terminal and the measurement result from other intra-group member terminals: or,
In an embodiment, the measurement result from other intra-group member terminals can be obtained through a direct communication interface periodic interaction or an event-triggered interaction. The trigger event may include one or more of the following:
In an embodiment, the measurement report message includes second indication information, where the second indication information is used for indicating a handover type that is expected to be performed, and the handover type includes group handover and single terminal handover.
In an embodiment, the apparatus further includes:
In an embodiment, the third transmitting unit 1400 is further used for:
It should be noted that, the division of units in the embodiments of the present application is schematic, and is only a logical function division, and there can be other division manners in actual implementation. In an embodiment, the functional units in the various embodiments of the present application can be integrated into one processing unit, or each unit can exist alone physically: or two or more units can be integrated into one unit. The aforementioned integrated unit can be implemented in the form of hardware or software functional unit.
In the case that the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor readable storage medium. Based on such understanding, the solutions of the present application in essence or a part of the solutions that contributes to the related art, or all or part of the solutions, can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to cause a computer device (which can be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in the respective embodiments of the present application. The storage medium described above includes various media that can store program codes, such as USB flash disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.
It should be noted that the above-mentioned apparatus in the embodiments of the present application can implement all the methods provided by the above-mentioned embodiments and achieve the same effect. The same parts and beneficial effects as the method embodiments are not repeated herein.
An embodiment of the present application further provides a processor readable storage medium storing a computer program that causes, when executed by a processor, the processor to perform the group handover method provided by the above embodiments, including: performing a handover decision; and after determining to perform the group handover, transmitting a handover request message to the target network device, where the handover request message carries first indication information that indicates a terminal group.
An embodiment of the present application further provides a processor readable storage medium storing a computer program that causes, when executed by a processor, the processor to perform the group handover method provided by the above embodiments, including: receiving a handover request message transmitted from a source network device, where the handover request message carries first indication information that indicates a terminal group.
An embodiment of the present application further provides a processor readable storage medium storing a computer program that causes, when executed by a processor, the processor to perform the group handover method provided by the above embodiments, including: transmitting a measurement report message to a source network device based on a received measurement configuration.
The processor readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to, a magnetic storage (e.g., a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), optical memory (such as CD, DVD, BD, HVD, etc.), and a semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.
The solutions according to the embodiments of the present application can be applicable to various systems, for example, 5G systems. For example, the applicable systems can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a long term evolution advanced (LTE-A) system, a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, etc. These various systems include a terminal and a network device, and can further include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), and the like.
The network device in the embodiments of the present application can be a base station, and the base station can include multiple cells providing services for the terminal. Depending on the specific scenario, the base station may be called an access point, or a device communicating with a wireless terminal device through one or more sectors on the air interface in the access network, or other names. The network device can be used for exchanging received air frames with internet protocol (IP) packets, and acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network can include an IP communication network. The network device can also coordinate attribute management for the air interface. For example, the network device in the embodiments of the present application may be a base transceiver station (BTS) in a global system for mobile communications (GSM) or a code division multiple access (CDMA), or may be a node B in a wide-band code division multiple access (WCDMA), or may be an evolutional node B (eNB or e-Node B) in a long term evolution (LTE) system, or may be a 5G gNB in 5G network architecture (next generation system), or may be a home evolved node B (HeNB), a relay node, a femto, or a pico, etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may be geographically separated.
The terminal device in the embodiments of the present application can be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the names of the terminal may be different. For example, in the 5G system, the terminal may be called as a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CNs) via a radio access network (RAN), and the wireless terminal can be a mobile terminal device, such as a mobile phone (or cellular phone) and a computer with mobile terminal device, e.g., a portable mobile device, a pocket-sized mobile device, a handheld mobile device, a computer-built mobile device or a vehicle-mounted mobile device, which exchange language and/or data with the radio access network. For example, a personal communication service (PCS) phone, a radio phone, a session-initiated protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) and other devices. A wireless terminal device may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile platform, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, which is not limited in the embodiments of the present application.
A multi-input multi-output (MIMO) transmission may be performed between the network device and the terminal by using one or more antennas. The MIMO transmission may be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations. MIMO transmission can be 2D-MIMO, 3D-MIMO. FD-MIMO or massive-MIMO, and may also be diversity transmission, precoding transmission, beamforming transmission, etc.
Embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
The present application is described with reference to flow charts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flow charts and/or block diagrams, and combinations thereof can be implemented by processor-executable instructions. These processor-executable instructions may be provided to processors of a general-purpose computer, a special purpose computer, an embedded processor or other programmable data processing device to produce a machine and the instructions executed by the processor of the computer or other programmable data processing device form a means for performing the functions specified in one or more flows in a flowchart and/or one or more blocks of a block diagram.
These processor-executable instructions may be stored in processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, and the instructions stored in the processor-readable memory may result in a manufacture including instruction means, the instruction means can perform the functions specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process and instructions performed on the computer or other programmable devices provide steps for performing the functions specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110722076.5 | Jun 2021 | CN | national |
The present application is a National Stage of International Application No. PCT/CN2022/079752, filed on Mar. 8, 2022, which claims priority to Chinese Patent Application No. 2021107220765, filed on Jun. 28, 2021, entitled “Group Handover Method, Device, and Apparatus, and Storage Medium”, which is hereby incorporated by reference in its entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2022/079752 | 3/8/2022 | WO |
