Search

EP-4104472-B1 - SIGNALLING OPTIMISATION

EP4104472B1EP 4104472 B1EP4104472 B1EP 4104472B1EP-4104472-B1

Inventors

  • XU, XIANG
  • SÉBIRE, Benoist
  • ALI, Amaanat
  • GODIN, PHILIPPE
  • CASATI, ALESSIO

Dates

Publication Date
20260513
Application Date
20200213

Claims (15)

  1. A radio access network, RAN, node (306, 406, 506, 606) comprising means for performing: receiving, by the RAN node (306, 406, 506, 606), first radio capability information from a user equipment (302, 402, 502, 602), the first radio capability information being in a format of a first radio access technology; and characterised by generating, by the RAN node (306, 406, 506, 606), second radio capability information of the user equipment (302, 402, 502, 602) based on the first radio capability information, wherein the second radio capability information is generated in a format of a second radio access technology; and sending, by the RAN node (306, 406, 506, 606) to a core network node (360, 460, 532, 638), the first radio capability information being in the format of the first radio access technology and the second radio capability information being in the format of the second radio access technology.
  2. The RAN node (306, 406, 506, 606) according to claim 1, wherein the core network node (360, 460, 532, 638) comprises a Mobility Management Entity or an Access and Mobility Management Function.
  3. The RAN node (306, 406, 506, 606) according to claim 1 or claim 2, wherein the RAN node (306, 406, 506, 606) comprises a source radio access node of the user equipment (302, 402, 502, 602), the RAN node (306, 406, 506, 606) operating according to the first radio access technology.
  4. The RAN node (306, 406, 506, 606) according to any of claims 1 to 3, wherein the first radio access technology is one of a long term evolution access technology and a new radio access technology, and the second radio access technology is the other of the long term evolution access technology and the new radio access technology.
  5. The RAN node (306, 406, 506, 606) according to any of claims 1 to 4, wherein the means are further configured to perform receiving (S7) a radio capability identifier of the user equipment (302, 402, 502, 602) from the core network node (360, 460, 532, 638), the radio capability identifier associated with both the first radio capability information and the second radio capability information.
  6. A method comprising: receiving (S1), by a radio access network, RAN, node, first radio capability information from a user equipment, the first radio capability information being in a format of a first radio access technology; and characterised by generating (S2), by the RAN node, second radio capability information of the user equipment based on the first radio capability information, wherein the second radio capability information is generated in a format of a second radio access technology; and sending (S3), by the RAN node to a core network node, the first radio capability information being in the format of the first radio access technology and the second radio capability information being in the format of the second radio access technology.
  7. The method according to claim 6, wherein the core network node comprises a Mobility Management Entity or an Access and Mobility Management Function.
  8. The method according to claim 6 or 7, wherein the RAN node comprises a source radio access node of the user equipment, the RAN node operating according to the first radio access technology.
  9. The method according to any of claims 6 to 8, wherein the first radio access technology is one of a long term evolution access technology and a new radio access technology, and the second radio access technology is the other of the long term evolution access technology and the new radio access technology.
  10. The method according to any of claims 6 to 9, further comprising: receiving (S7), by the RAN node, a radio capability identifier of the user equipment from the core network node, the radio capability identifier associated with both the first radio capability information and the second radio capability information.
  11. A non-transitory computer readable medium comprising program instructions for causing a radio access network, RAN, node to perform at least: receiving (S1), by the RAN node, first radio capability information from a user equipment, the first radio capability information being in a format of a first radio access technology; and characterised by generating (S2), by the RAN node, second radio capability information of the user equipment based on the first radio capability information, wherein the second radio capability information is generated in a format of a second radio access technology; and sending (S3), by the RAN node to a core network node, the first radio capability information being in the format of the first radio access technology and the second radio capability information to a core network node being in the format of the second radio access technology.
  12. The non-transitory computer readable medium according to claim 11, wherein the core network node comprises a Mobility Management Entity or an Access and Mobility Management Function.
  13. The non-transitory computer readable medium according to claim 11 or 12, wherein the RAN node comprises a source radio access node of the user equipment, the RAN node operating according to the first radio access technology.
  14. The non-transitory computer readable medium according to any of claims 11 to 13, wherein the first radio access technology is one of a long term evolution access technology and a new radio access technology, and the second radio access technology is the other of the long term evolution access technology and the new radio access technology.
  15. The non-transitory computer readable medium according to any of claims 11 to 14, wherein non-transitory computer readable medium further comprises program instructions to perform: receiving a radio capability identifier of the user equipment from the core network node, the radio capability identifier associated with both the first radio capability information and the second radio capability information.

Description

Field This disclosure relates to communications. More particularly, the present disclosure relates to apparatus, methods and computer programs for signalling optimisation in a communication system. Background A communication system can be seen as a facility that enables communication between two or more devices such as user terminals, machine-like terminals, base stations and/or other nodes by providing communication channels for carrying information between the communicating devices. A communication system can be provided for example by means of a communication network and one or more compatible communication devices. The communication may comprise, for example, communication of data for carrying data for voice, electronic mail (email), text message, multimedia and/or content data communications and so on. Non-limiting examples of services provided include two-way or multi-way calls, data communication or multimedia services and access to a data network system, such as the Internet. In a wireless system at least a part of communications occurs over wireless interfaces. Examples of wireless systems include public land mobile networks (PLMN), satellite based communication systems and different wireless local networks, for example wireless local area networks (WLAN). A local area wireless networking technology allowing devices to connect to a data network is known by the tradename WiFi (or Wi-Fi). WiFi is often used synonymously with WLAN. The wireless systems can be divided into cells, and are therefore often referred to as cellular systems. A base station provides at least one cell. A user can access a communication system by means of an appropriate communication device or terminal capable of communicating with a base station. Hence nodes like base stations are often referred to as access points. A communication device of a user is often referred to as user equipment (UE). A communication device is provided with an appropriate signal receiving and transmitting apparatus for enabling communications, for example enabling communications with the base station and/or communications directly with other user devices. The communication device can communicate on appropriate channels, e.g. listen to a channel on which a station, for example a base station of a cell, transmits. A communication system and associated devices typically operate in accordance with a given standard or specification which sets out what the various entities associated with the system are permitted to do and how that should be achieved. Communication protocols and/or parameters which shall be used for the connection are also typically defined. Non-limiting examples of standardised radio access technologies include GSM (Global System for Mobile), EDGE (Enhanced Data for GSM Evolution) Radio Access Networks (GERAN), Universal Terrestrial Radio Access Networks (UTRAN), evolved UTRAN (E-UTRAN) and New Radio (NR). An example communication system architecture is the long-term evolution (LTE) of the Universal Mobile Telecommunications System (UMTS) radio-access technology. The LTE is standardized by the third Generation Partnership Project (3GPP). The LTE employs the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access and a further development thereof which is sometimes referred to as LTE Advanced (LTE-A). Since introduction of fourth generation (4G) services increasing interest has been paid to the next, or fifth generation (5G) standard. 5G may also be referred to as a New Radio (NR) network. With the increase in radio capabilities of E-UTRA and NR UEs, the present disclosure has identified that there is a need for an efficient approach to signaling UE capability information over the radio interface. 3GPP TS 23.501, V16.2.0; "Technical specification group services and system aspects; System Architecture for the 5G system (5GS); Stage 2 (Release 16)" covers roaming and non-roaming scenarios in some aspects, including interworking between 5GS and EPS, mobility within 5GS, QoS, policy control and charging, authentication and in general 5G System wide features e.g. SMS, Location Services, Emergency Services. Samsung: "RAT-Type in RACS Signaling", 3GPP Draft; S2-2000846 and Samsung: "RAT-Type in RACS Signaling", 3GPP Draft; S2-2000843 discuss UE radio capability signaling optimization (RACS). Samsung: "Discussion on different radio capability octet values across RATs", 3GPP Draft; S2-2000839 relates to optimizations on UE capability signaling wherein for same UE radio capability, octet values generated are different in E-UTRAN and NG-RAN. US 2019/313239 A1 provides techniques for optimizing user equipment radio capability signaling for wireless communications. Summary According to a first aspect there is provided a radio access network, RAN, node comprising means for performing: receiving, by the RAN node, first radio capability information from a user equipment, the first radio capability information being in a format of a first radio a