Patent Application
20200029321
This application claims a priority to Chinese Patent Application No. 201610875718.4 filed on Sep. 30, 2016, the disclosure of which is incorporated in its entirety by reference herein.
The present disclosure relates to the field of communication technology, in particular to a method for user equipment (UE) capability negotiation, a UE and a base station.
As the network evolves continuously, network architecture cooperated/aggregated by the same kind of conventional radio access systems is not compatible with future development anymore. With the mixed deployment of the fifth generation (5G) communication system or other radio access system combined with 4G network, two or more different radio access systems are merged, which brings further improvement to performance of whole radio communication system.
In related technology, UE can merely perform dual-link operation under one system (such as LTE system or NR system), UE capability can be analyzed by a master node and a secondary node in the system, and resource is allocated accordingly without exceeding the UE capability.
However, in a scenario where multiple systems merge, UE capabilities for different systems are independent from each other. In order not to exceed a maximum capability of UE, a new UE capability negotiation mechanism is required to ensure that radio resources for multiple systems can be effectively coordinated.
In view of the above, a method for UE capability negotiation, a UE and a base station are provided according to embodiments of the present disclosure, to ensure that a maximum capability of the UE in a scenario where multiple systems merge may not be exceeded and radio resources of the multiple systems can be coordinated effectively.
In a first aspect according to the embodiments of the present disclosure, a method for UE capability negotiation is provided. The method includes: reporting, by a UE to a network, individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems.
Optionally, the merged capability includes: band combinations supportable by the UE for the respective radio access networks in the multiple systems and a capability parameter corresponding to each band.
Optionally, the capability parameter corresponding to each band is identified by an index.
Optionally, a specific parameter value corresponding to each index is defined in an individual capability of the UE for each radio access system.
Optionally, the reporting, by the UE to the network, the individual capabilities of the UE for the respective radio access networks in the multiple systems and the merged capability of the UE for all radio access networks in the multiple systems includes: reporting, by the UE to the network, the individual capabilities of the UE for the respective radio access networks in the multiple systems and the merged capability of the UE for all the radio access networks in the multiple systems, in response to triggering from a master base station.
Optionally, the method further includes receiving, by the UE, a radio parameter sent from a master base station. The radio parameter is a radio parameter of a secondary link configured by a secondary base station based on capability indicating information recommended by the master base station, and the radio parameter from the secondary base station is forwarded to the UE via the master base station. The capability indicating information is recommended to the secondary base station by the master base station based on one or more of the merged capability of the UE for all the radio access networks in the multiple systems reported by the UE, a radio network condition of the master base station and a radio resource management strategy of the master base station. When recommending the capability indicating information to the secondary base station, the master base station forwards, to the secondary base station, an individual capability of the UE for a radio access network to which the secondary base station belongs, the individual capability of the UE for the radio access network to which the secondary base station belongs being reported by the UE.
Optionally, the method further includes receiving, by the UE, a changed radio parameter sent from a master base station. When a radio parameter needs to be changed, the master base station triggers a negotiation to determine the changed radio parameter.
Optionally, the method further includes: receiving, by the UE, a changed radio parameter sent from a master base station. When a radio parameter needs to be changed, a secondary base station triggers a negotiation to determine the changed radio parameter.
In a second aspect according to the embodiments of the present disclosure, a method for UE capability negotiation is further provided. The method includes: triggering, by a master base station, a UE to report individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems.
Optionally, the merged capability includes: band combinations supportable by the UE for the respective radio access networks in the multiple systems and a capability parameter corresponding to each band.
Optionally, the capability parameter corresponding to each band is identified by an index.
Optionally, a specific parameter value corresponding to each index is defined in an individual capability of the UE for each radio access system.
Optionally, the method further includes: recommending, by the master base station to a secondary base station, capability indicating information based on one or more of the merged capability of the UE for all radio access networks in the multiple systems reported by the UE, a radio network condition of the master base station and a radio resource management strategy of the master base station; and forwarding, by the master base station to the secondary base station, an individual capability of the UE for a radio access network to which the secondary base station belongs, the individual capability of the UE for the radio access network to which the secondary base station belongs being reported by the UE.
Optionally, the method further includes transmitting, from the master base station to the UE, a radio parameter. The radio parameter is a radio parameter of a secondary link configured by a secondary base station based on capability indicating information recommended by the master base station.
Optionally, the method further includes: triggering and performing a negotiation by the master base station when a radio parameter needs to be changed; and transmitting a changed radio parameter from the master base station to the UE.
In a third aspect according to the embodiments of the present disclosure, a UE is further provided. The UE includes a transmitting module, used to report, to a network, individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all the radio access networks in the multiple systems.
Optionally, the merged capability includes: band combinations supportable by the UE for the respective radio access networks in the multiple systems and a capability parameter corresponding to each band.
Optionally, the capability parameter corresponding to each band is identified by an index.
Optionally, a specific parameter value corresponding to each index is defined in an individual capability of the UE for each radio access system.
Optionally, the transmitting module is used to report, to the network, the individual capabilities of the UE for the respective radio access networks in the multiple systems and the merged capability of the UE for all radio access networks in the multiple systems, in response to a triggering of a master base station.
Optionally, the UE further includes a receiving module, used to receive a radio parameter sent from a master base station. The radio parameter is a radio parameter of a secondary link configured by a secondary base station based on capability indicating information recommended by the master base station, and the radio parameter from the secondary base station is forwarded to the UE via the master base station. The capability indicating information is recommended to the secondary base station by the master base station based on one or more of the merged capability of the UE for all radio access networks in the multiple systems reported by the UE, a radio network condition of the master base station and a radio resource management strategy of the master base station. When recommending the capability indicating information to the secondary base station, the master base station forwards, to the secondary base station, an individual capability of the UE for a radio access network to which the secondary base station belongs, the individual capability of the UE for the radio access network to which the secondary base station belongs being reported by the UE.
Optionally, the receiving module is further used to receive a changed radio parameter sent from a master base station. When a radio parameter needs to be changed, the master base station triggers a negotiation to determine the changed radio parameter.
Optionally, the receiving module is further used to receive a changed radio parameter sent from a master base station. When a radio parameter needs to be changed, a secondary base station triggers a negotiation to determine the changed radio parameter.
In a fourth aspect according to the embodiments of the present disclosure, a base station is further provided. The base station includes a triggering module, used to trigger a UE to report individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems.
Optionally, the merged capability includes: band combinations supportable by the UE for the respective radio access networks in the multiple systems and a capability parameter corresponding to each band.
Optionally, the capability parameter corresponding to each band is identified by an index.
Optionally, a specific parameter value corresponding to each index is defined in an individual capability of the UE for each radio access system.
Optionally, the base station further includes: a recommending module, used to recommend, to a secondary base station, capability indicating information based on one or more of the merged capability of the UE for all radio access networks in the multiple systems reported by the UE, a radio network condition of a master base station and a radio resource management strategy of a master base station; and forward, to the secondary base station, an individual capability of the UE for a radio access network to which the secondary base station belongs, the individual capability of the UE for the radio access network to which the secondary base station belongs being reported by the UE.
Optionally, the base station further includes a transmitting module, used to transmit a radio parameter to the UE. The radio parameter is a radio parameter of a secondary link configured by a secondary base station based on capability indicating information recommended by a master base station.
Optionally, the base station further includes: a negotiating module, used to trigger and perform a negotiation when a radio parameter needs to be changed; and a transmitting module, used to transmit a changed radio parameter to the UE.
In a fifth aspect according to the embodiments of the present disclosure, a UE is further provided. The UE includes a processor and a transceiver used to receive and transmit data under control of the processor. The processor is used to report, to a network, individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems,
In a sixth aspect according to the embodiments of the present disclosure, a base station is further provided. The base station includes a processor and a transceiver used to receive and transmit data under control of the processor. The processor is used to trigger a UE to report individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems.
In a seventh aspect according to the embodiments of the present disclosure, a nonvolatile computer readable medium is further provided, which stores thereon computer readable instructions that are executable by a processor. When being executed by the processor, the computer readable instructions instruct the processor to report, to a network, individual capabilities of a UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems.
In an eighth aspect according to the embodiments of the present disclosure, a nonvolatile computer readable medium is further provided, which stores thereon computer readable instructions that are executable by a processor. When being executed by the processor, the computer readable instructions instruct the processor to trigger a UE to report individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems.
The technical solutions described above have the following advantages or beneficial effects. The UE reports, to the network, the individual capabilities of the UE for the respective radio access networks in the multiple systems and the merged capability of the UE for all the radio access networks in the multiple systems, such that the maximum capability of the UE may not be exceeded in a scenario where the multiple systems merges and the radio resources of the multiple systems can be effectively coordinated.
Exemplary embodiments of the present disclosure are detailed with reference to the drawings. Although the exemplary embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure can be achieved in various ways rather than limited to the embodiments described herein; on the contrary, the embodiments are intended to better understand the present disclosure and completely convey the scope of the present disclosure to those skilled in the art.
It is known by those skilled in the art that the embodiments of the present disclosure may be specifically embodied into systems, devices, apparatuses, methods or computer program products. The embodiments of the present disclosure may be specifically realized in a form of complete hardware, complete software (including firmware, resident software, microcode and so on), or a combination of hardware and software.
A method for UE capability negotiation is provided according to an embodiment of the present disclosure, to ensure that a maximum capability of a UE may not be exceeded in a scenario where multiple systems merge and effectively coordinate resources for the multiple systems.
The method includes: reporting, by a UE, individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems to a network.
For a UE device that supports merging of multiple radio access systems, such as a UE that supports merging of an LTE access network and a 5G access network, the UE needs to report, to the network, a merged capability of the UE for the multiple systems such as a merged capability of the LTE radio access network and the 5G radio access network in addition to individual capabilities of the UE for respective radio access systems in the multiple systems.
The merged capability at least needs to include: band combinations supportable by the UE for respective radio access networks in the multiple systems, such as a band combination for the LTE radio access network and a band combination for the 5G access network; and a capability parameter corresponding to each band, such as a multiple input multiple output (MIMO) parameter. It should be understood that the above-mentioned merged capability parameters are merely exemplary and the merged capabilities involved in practical implementation are not limited thereto.
In an embodiment of the present disclosure, the capability parameter corresponding to each band may be identified by an index, for example, using Freq Band Indicator (frequency band indicator). In this way, a specific parameter value corresponding to each index may be defined in detail in an individual capability of the UE for a certain radio access system, which prevents a network device of one access system from analyzing capability parameter information of another access system.
When merging multiple systems (such as LTE and 5G NR), a master base station (in LTE or in 5G NR) may initial a UE capability negotiation process; in response to triggering of the master base station, the UE reports, to the network, the individual capabilities of the UE for the respective radio access networks in the multiple systems and the merged capability of the UE for all the radio access networks in the multiple systems.
In this process, the master base station recommends suitable capability indicating information (such as Freq Band indicator) to a secondary base station (in LTE or in 5G NR) based on one or more of the merged capability of the multiple systems reported by the UE, a radio network condition of the master base station and a radio resource management (RRM) strategy of the master base station. In addition, the master base station forwards, to the secondary base station, information about an individual capability of the UE for a target radio access system, i.e., a radio access system to which the secondary base station belongs, such that the secondary base station may determine a specific capability parameter. The secondary base station configures a radio parameter of a secondary link based on the recommended capability indicating information, and then transmits the radio parameter transparently to the UE via the master base station, thereby accomplishing a radio configuration process of the secondary link.
The UE capability negotiation process can be triggered by any affected side, e.g., the master base station or the secondary base station when a configuration of any radio parameter changes, to perform a negotiation. Then a changed radio parameter is configured to the UE.
In a possible multilayer network covering environment as shown in
In some other embodiments, there may be a case that the master base station is an NR BS and the secondary base station is an LTE eNB, which has a similar implementation to a case that the master base station is the LTE eNB and the secondary base station is the NR BS, so description hereinafter is still based on the latter case.
The method for UE capability negotiation specifically includes steps 201 to 207.
In step 201, a master base station triggers a UE to report capability information.
In step 202, the UE reports the capability information to the master base station. The capability information includes information about an individual capability of the UE for an LTE radio access system, information about an individual capability of the UE for an NR radio access system, i.e., a 5G radio access system and information about a merged capability of the UE for the LTE and the NR.
In step 203, the master base station determines to add a new secondary data link based on at least one of the merged capability of the UE for the LTE and the NR reported by the UE, a current radio network situation (which may be obtained from a measurement report sent by the UE) and radio resource management (RRM) strategy information and selects capability indicating information based on the above-mentioned parameters.
In step 204, the master base station transmits a secondary cell group (SCG) adding request message to a secondary base station (5G base station). The message includes the capability indicating information selected by the master base station, the information about the individual capability of the UE for the NR (for the 5G system) and so on.
In step 205, the secondary base station configures a radio parameter of a secondary link based on recommended capability indicating information.
In step 206, the secondary base station transmits the radio parameter to the master base station via an SCG adding response message.
In step 207, the master base station transmits a radio resource control (RRC) reconfiguration signaling via an air interface and notifies the UE of the radio parameter configured by the secondary base station to complete a radio configuration process of the secondary link.
As described above, the UE capability negotiation process may be triggered by any affected side, e.g., the master base station or the secondary base station when a configuration of any radio parameter changes, to perform a negotiation.
According to an embodiment of the present disclosure, when the radio parameter needs to be changed, the master base station triggers and performs the negotiation.
In the embodiment, the UE maintains multi-link services with the master base station and the secondary base station.
As shown in
Step 301 includes: receiving, by a master base station (an LTE base station), measurement information from a UE, or obtaining other radio resource management strategy
Step 302 includes: determining, by the master base station, to change a radio configuration of a secondary link, triggering a renewing process of a merging set of LTE and NR by the master base station, and transmitting corresponding information to a secondary base station via an SCG changing request message.
Step 303 includes: performing an acceptance judgment by the secondary base station, and replying, by the secondary base station, an SCG changing response message to the master base station in a case that a change is acceptable, where the SCG changing response message includes a radio parameter reconfigured by the secondary base station, i.e., a changed radio parameter.
Step 304 includes: notifying the UE of the changed radio parameter by the master base station via an air interface radio resource management reconfiguration signaling.
In an embodiment of the present disclosure, when the radio parameter needs to be changed, the secondary base station triggers and performs the negotiation.
In the embodiment, the UE maintains multi-link services with the master base station and the secondary base station.
As shown in
Step 401 includes: receiving new measurement information by a secondary base station (an NR base station). The new measurement information may be directly from a UE or may be forwarded by a master base station.
Step 402 includes: determining, by the secondary base station, to change a radio configuration of a secondary link, triggering a renewing process of a merging set of LTE and NR by the secondary base station, and transmitting corresponding information to a master base station via an SCG changing request message. The SCG changing request message includes a radio parameter reconfigured by the secondary base station, i.e., a changed radio parameter.
Step 403 includes: performing a judgment by the master base station, and replying, by the master base station, an SCG changing response message to the secondary base station in a case that a change is acceptable.
Step 404 includes: notifying the UE of the changed radio parameter by the master base station via an air interface radio resource management reconfiguration signaling.
A UE 500 is further provided in an embodiment of the present disclosure. As shown in
In the embodiment, optionally, the merged capability includes, but not limited to, band combinations supportable by the UE for the respective radio access networks in the multiple systems and a capability parameter corresponding to each band.
In the embodiment, optionally, the capability parameter corresponding to each band may be identified by an index.
In the embodiment, optionally, a specific parameter value corresponding to each index may be defined in an individual capability of the UE for the radio access system.
In the embodiment, optionally, the transmitting module 510 may report, to a network, individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all the radio access networks in the multiple systems in response to triggering from a master base station.
In an embodiment, optionally as shown in
The capability indicating information is recommended to the secondary base station by the master base station based on one or more of the merged capability of the UE 500 for all the radio access networks in the multiple systems reported by the UE 500, a radio network condition of the master base station and a radio resource management strategy of the master base station.
When recommending the capability indicating information to the secondary base station, the master base station forwards, to the secondary base station, an individual capability of the UE 500 for a radio access system to which the secondary base station belongs reported by the UE 500.
In the embodiment, optionally, the receiving module 520 is further used to receive a changed radio parameter sent by the master base station. In a case that the radio parameter needs to be changed, the master base station triggers and performs a negotiation to determine the changed radio parameter.
In the embodiment, optionally, the receiving module 520 is further used to receive a changed radio parameter sent by the master base station. In a case that the radio parameter needs to be changed, the secondary base station triggers and performs a negotiation to determine the changed radio parameter.
A base station 700 is further provided according to an embodiment of the present disclosure. As shown in
In the embodiment, optionally, the merged capability includes but is not limited to band combinations supportable by the UE for the respective radio access networks in the multiple systems and a capability parameter corresponding to each band.
In the embodiment, optionally, the capability parameter corresponding to each band may be identified by an index.
In the embodiment, optionally, a specific parameter value corresponding to each index may be defined in an individual capability of the UE for the radio access system.
In an embodiment, optionally as shown in
In an embodiment, optionally as shown in
In an embodiment, optionally as shown in
The technical solutions described above have the following advantages or beneficial effects. The UE reports, to the network, the individual capabilities of the UE for the respective radio access networks in the multiple systems and the merged capability of the UE for all radio access networks in the multiple systems, such that the maximum capability of the UE may not be exceeded in a scenario where the multiple systems merges and the radio resources of the multiple systems can be effectively coordinated.
It should be understood that, such terms as “an embodiment” and “one embodiment” throughout the specification mean that an embodiment-related specific characteristic, structure or feature is included in at least one embodiment of the present disclosure. Hence, such terms as “in an embodiment” and “in one embodiment” here and there in the specification do not definitely indicate an identical embodiment. The specified characteristics, structures or features can be combined arbitrarily in one or more embodiments.
In various embodiments of the present disclosure, it should be understood that, values of serial numbers of the respective steps do not indicate an order of execution and do not limit implementations of the embodiments of the present disclosure. The order of execution of the respective steps is determined based on functions and inner logic thereof.
Furthermore, such terms as “system” and “network” in the present disclosure may be interchanged with each other.
It should be noted that, a term of “and/or” in the present disclosure merely describes an associated relationship between associated objects. Such term may indicate three kinds of relationships. For example, “A and/or B” may indicate only A, only B and a combination of A and B. In addition, the symbol “/” usually indicates an “or” relationship between two associated objects before and after the symbol.
In the embodiments of the present disclosure, it should be understood that, “B corresponding to A” indicates that B is related with A and may be determined based on A. In addition, determining B based on A does not mean determining B based on only A; and actually, B may be determined based on A and/or other information.
It should be understood that, the methods and devices according to the embodiments of the present disclosure may be achieved in other ways. The described embodiments directed to the devices are exemplary. The division of units is merely a division based on logic functions and may be achieved in other division ways. For example, multiple units or elements may be combined or integrated into another system, or some features may be neglected or not realized. In addition, illustrated or discussed couplings may be direct couplings or communication connections, or may be achieved by indirect couplings or communication connections via some interfaces, devices or units. The couplings may be electrical connection, mechanical connection or in other ways.
Furthermore, various functional units in the embodiments of the present disclosure may be integrated in one processing unit, or may be independent physically, or two or more of the functional units are integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
The integrated units implemented by software functional units may be stored in a computer readable storage medium. The software functional units is stored in a storage medium where stores several instructions to instruct a computer device (a personal computer, a server, a network side device or the like) to perform partial steps of transceiving methods according to the embodiments of the present disclosure. The storage medium includes various media that can store program codes, such as a U disk, a portable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or a compact disc.
Reference may be made to
As shown in
Components connected to the I/O interface 1105 include: an inputting portion 1106 such as keyboard and mouse, an outputting portion 1107 such as cathode ray tube (CRT), liquid crystal display (LCD) and loudspeaker, the storing portion 1108 such as hard disk, and a communication portion 1109, for example, network interface card such as LAN card and modem. The communication portion 1109 performs communication processing via a network such as the Internet. A driver 210 also needs to be connected to the I/O interface 1105. A detachable medium 211 such as magnetic disk, compact disc, photomagnetic disk and semiconductor storage needs to be installed on the driver 210, such that computer programs read from the detachable medium 211 may be conveniently installed in the storing portion 1108 according to needs.
Specifically, according to the embodiments of the present disclosure, the above-described process may be implemented as a computer software program. For example, an embodiment of the present disclosure provides a computer program product including a computer program that is tangibly included on a computer readable medium, where the computer program includes program codes for executing the method according to the flow chart. According to such embodiment, the computer program may be downloaded from the network via the communication portion 1109 and installed, and/or may be downloaded from the detachable medium 211 and installed.
Schematic process diagrams and block diagrams in the drawings illustrate achievable architectures, functions and operations of the system, method and computer program product according to the respective embodiments of the present disclosure. Each block in the schematic process diagrams and the block diagrams may represent a module, a program segment or a portion of codes. The module, the program segment or the portion of codes includes one or more executable instructions for realizing specified logic functions. It should be noted that, in some replacement implementations, functions labeled in blocks may take place in an order different from that as labeled in the drawings. For example, two connected blocks may be performed substantially concurrently in actual or may be performed in a reverse order, which depends on related functions. It should be further noted that, each block in the block diagrams and/or the schematic process diagrams and a combination of blocks in the block diagrams and/or the schematic process diagrams may be realized by a dedicated hardware-based system that performs specified functions or operations or may be realized by a combination of a dedicated hardware and computer instructions.
Related units or modules in the description of the embodiments of the present disclosure may be implemented in a software way or a hardware way. The described units or modules may be arranged in a processor. Names of the units or modules do not limit the units or modules themselves in some situations.
Preferred embodiments are described hereinabove. It should be noted that various improvements and polishments can be made by the ordinary skilled in the art without departing from the principle of the present disclosure. These improvements and polishments shall all fall within the protection scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201610875718.4 | Sep 2016 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2017/103891 | 9/28/2017 | WO | 00 |
