Method for detecting a closed access group mobile iab cell and setting its priority

Abstract

According to example embodiments of the application, there are at least one method and one apparatus for performing: determining, by an apparatus, information of a range list in a communication network in which at least one closed access group cell can be found and in which at least one mobile integrated access and backhaul cell can be found; scanning for a physical cell identifier of a candidate cell in a synchronization signal block, the physical cell identifier being found in both at least one system information block closed access group list or range, and at least one system information block mobile integrated access and backhaul list or range; based on the scanning, decoding system information at the candidate cell to verify that the candidate cell is a mobile integrated access and backhaul cell and a closed access group cell; and based on the decoding, enabling the apparatus to access the candidate cell for cell reselection.

Description

Technical Field

[0001] The teachings of exemplary embodiments of the present invention generally relate to reducing the set of cells that a UE searches on, and more specifically to reducing the set of cells that a UE searches on for mobile IAB and CAG cells in order to improve cell reselection priority ranking. Background Technology

[0002] This section is intended to provide background or context for the invention as set forth in the claims. The description herein may include concepts that may be pursued, but are not necessarily previously conceived or pursued. Therefore, unless otherwise stated herein, the content described in this section is not prior art to the description and claims of this application, nor should it be considered prior art by virtue of its inclusion in this section.

[0003] The following are definitions of certain abbreviations that may appear in the instruction manual and / or accompanying drawings:

[0004] AS: Access Layer

[0005] CAG: Closed Access Group

[0006] IAB: Integrated Access and Backhaul

[0007] MBSR: Mobile Base Station Relay

[0008] NAS: Non-Access Layer

[0009] PLMN: Public Land Mobile Network

[0010] PNI-NPN: Public Network Integration with Non-Public Networks

[0011] PCI: Physical Cell Identifier

[0012] SIB: System Information Block

[0013] SSB: Synchronization Signal Block

[0014] UE: User Equipment

[0015] VMR: Vehicle-mounted relay

[0016] In certain urban environments, installing additional base stations on buildings or other infrastructure sites can present typical deployment challenges and burdens, such as real estate availability and cost, or restrictive regulations. In the same urban environment, combined with a high density of users, one can also expect a large presence and availability of vehicles around, such as those used for public / private passenger transport, freight delivery, food trucks, etc., which typically travel at low / walking speeds (or are temporarily stationary).

[0017] These vehicles do indeed provide a convenient and efficient location for installing vehicle-mounted base stations (or base station elements) as relays to provide 5G coverage and connectivity to neighboring UEs outside the vehicle. The relay will use 5G radio backhaul toward the macro network (fixed donor base station) connected to the 5G core. In other scenarios, such as during outdoor sporting events or pedestrian incidents, vehicles equipped with relays can easily move alongside users or devices outside the vehicle and provide them with service. In some cases, such as medical emergencies or when an area lacks sufficient coverage, vehicle relaying can enable improved connectivity and data delivery.

[0018] At the time of this application, the corresponding architecture enhancement research (FS_VMR) mainly focuses on the following areas:

[0019] - Provision, policies and mechanisms for purposes such as managing relay configuration, geographic restrictions, QoS, authorization and control of UE access via mobile base station relays;

[0020] - Supports roaming for mobile base station relays (including roaming for MT and DU components), and supports regulatory requirements (e.g., emergency situations, priority service, public safety).

[0021] Supports location services for UE access to mobile base station relays.

[0022] The exemplary embodiments of the present invention propose improved operation to enhance control over UE access to mobile base station relay, including the use of Closed Access Group (CAG) cells and / or similar enhancement mechanisms. Summary of the Invention

[0023] This section includes examples of possible implementations, but is not intended to be restrictive.

[0024] In another example aspect of the invention, there is an apparatus, such as a user equipment side apparatus, comprising: at least one processor; and at least one non-transient memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: determine information of a range list in a communication network in which at least one Closed Access Group cell and at least one Mobile Integrated Access and Backhaul cell may be found; scan synchronization signal blocks to find physical cell identifiers of candidate cells found in both at least one system information block Closed Access Group list or range and at least one system information block Mobile Integrated Access and Backhaul list or range; based on the scan, decode system information at the candidate cell to verify that the candidate cell is a Mobile Integrated Access and Backhaul cell and a Closed Access Group cell; and based on the decoding, enable the apparatus to access the candidate cell for cell reselection.

[0025] In another aspect of the invention, a method is provided, comprising: determining information of a range list in a communication network, in which at least one Closed Access Group cell and at least one Mobile Integrated Access and Backhaul cell may be found; scanning synchronization signal blocks to find physical cell identifiers of candidate cells, the physical cell identifiers being found in both at least one system information block Closed Access Group list or range and at least one system information block Mobile Integrated Access and Backhaul list or range; and based on the scan, decoding system information at the candidate cell to verify that the candidate cell is a Mobile Integrated Access and Backhaul cell and a Closed Access Group cell; and based on the decoding, enabling the device to access the candidate cell for cell reselection.

[0026] Another example embodiment is an apparatus and method that includes the apparatus and method described in the foregoing paragraph. The determination is based on: broadcasting information in at least one system information block from a cell in a communication network, wherein the scan includes: scanning synchronization signal blocks to find physical cell identifiers for candidate cells, the physical cell identifiers being found in either a list or range of neighboring system information blocks in the intersection of set C3 or set C4 and set M3 or set M4. The method is based on a list or range of adjacent physical cell identifiers between frequencies: C4 represents a list, range, or range list of adjacent closed access group cells between frequencies; and M4 represents a list, range, or range list of adjacent mobile integrated access and backhaul cells between frequencies. The scan is performed by scanning the physical cell identifiers in the intersection of C4 and M4. Alternatively, the method is based on a list or range of adjacent physical cell identifiers within a frequency: C3 represents a list, range, or range list of adjacent closed access group cells within a frequency; and M3 represents a list, range, or range list of adjacent mobile integrated access and backhaul cells within a frequency. The scan is performed by scanning the physical cell identifiers in the intersection of C3 and M3. The device is configured by a communication network with one or more... Multiple closed access group identifiers, wherein based on the scan, cells of the communication network are identified as candidate cells with system information to be decoded, wherein based on the identification, at least one system information block is received from the cells of the communication network, the at least one system information block indicating that the cell is a closed access group cell and a mobile integrated access and backhaul cell, wherein based on the reception, system information block 1 is decoded; cells of the communication network are detected as closed access group cells and mobile integrated access and backhaul cells in a range list in the communication network; the closed access group identifier of the detected cell is verified to be in the configuration set of the closed access group list or range of the device; and based on the verification, cells of the communication network are reselected, wherein the reselection does not consider the dedicated frequency priority of the cell.

[0027] A non-transient computer-readable medium storing program code that is executed by at least one processor to perform at least the methods described in the preceding paragraph.

[0028] In another example aspect of the invention, there is an apparatus comprising: components for determining information of a range list in a communication network in which at least one Closed Access Group cell and at least one Mobile Integrated Access and Backhaul cell may be found; components for scanning synchronization signal blocks to find physical cell identifiers of candidate cells found in both at least one system information block Closed Access Group list or range and at least one system information block Mobile Integrated Access and Backhaul list or range; components for decoding system information at the candidate cell based on the scan to verify that the candidate cell is a Mobile Integrated Access and Backhaul cell and a Closed Access Group cell; and components for enabling the apparatus to access the candidate cell for cell reselection based on the decoding.

[0029] According to the example embodiments described in the preceding paragraphs, at least the components used for determining, scanning, and decoding include a network interface and computer program code stored on a computer-readable medium and executed by at least one processor.

[0030] A communication system includes the above-described device as a network-side device or a user equipment-side device for performing the above-described operations. Attached Figure Description

[0031] The above and other aspects, features, and benefits of various embodiments of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings, wherein like reference numerals are used to denote like or equivalent elements. The drawings are illustrated to facilitate a better understanding of the embodiments of the present disclosure, and the drawings are not necessarily drawn to scale. In the drawings:

[0032] Figure 1 The detection and prioritization of mobile IAB+CAG cells using SIB4 auxiliary information are illustrated according to an exemplary embodiment of the present invention.

[0033] Figure 2 The detection and prioritization of mobile IAB+CAG cells using SIB3 auxiliary information are illustrated according to an exemplary embodiment of the present invention.

[0034] Figure 3 A high-level block diagram of various devices for carrying out various aspects of the present invention is shown; and

[0035] Figure 4 A method according to an example embodiment of the present invention is shown, which can be performed by an apparatus. Detailed Implementation

[0036] In exemplary embodiments of the present invention, at least one method and apparatus are proposed for reducing the set of cells on which a UE searches for mobile IAB and CAG cells for cell reselection priority ranking.

[0037] Mobile IAB (Integrated Access and Backhaul), MBSR (Mobile Base Station Relay), VMR (Vehicle-Mounted Relay), Closed Access Group (CAG)

[0038] Example embodiments of the present invention relate to standards-based integrated mobile access and backhaul (mobile IAB), including vehicular trunk (VMR) (also known as mobile base station trunk (MBSR)).

[0039] The following is the relevant background information on VMR and / or the Mobile IAB standard:

[0040] • Enhance the mobility of IAB nodes and served UEs, including aspects related to group mobility. No optimizations were made for surrounding UEs. [RAN3, RAN2].

[0041] Background of the Closed Access Group (CAG) concept:

[0042] A Public Network Integrated NPN is an NPN [non-public network] available via a PLMN, for example, through a dedicated DNN, or through one or more network slice instances allocated for the NPN. Currently, existing network slicing functionality is used. When a PNI-NPN is available via a PLMN, the UE should subscribe to the PLMN to access the PNI-NPN.

[0043] Note that since network slicing cannot prevent a UE from attempting to access the network in an area where the UE is not allowed to use the network slice allocated for the NPN, closed access groups can be optionally used to apply access control.

[0044] The Closed Access Group (CAG) identifies a user group that is allowed to access one or more CAG cells associated with the CAG.

[0045] CAG is used in PNI-NPN to prevent multiple UEs that are not allowed to access the NPN via multiple associated cells from automatically selecting and accessing multiple associated CAG cells.

[0046] According to the standards at the time of this application, the following markings are required:

[0047] - A CAG is identified by a unique CAG identifier within the PLMN ID range; and

[0048] - A CAG cell broadcasts one or more CAG identifiers for each PLMN.

[0049] For more background on CAG, see Section 5.30.3 of TS23.501. TS 38.304 specifies the details related to UE reselection in CAG cells, and TS 38.331 specifies the relevant access stratum (AS) CAG indication from the network to the UE.

[0050] The standard at the time of this application already approved the use of CAG as a method for controlling UE access to MBSR.

[0051] Currently, CAG identifiers are used to control UE access via MBSR (i.e., mobile IAB node), and existing CAG mechanisms can be used to manage UE access to MBSR, but the following additional considerations are required:

[0052] When an MBSR is permitted to operate as an IAB node of a PLMN, the MBSR is configured with a unique CAG identifier within that PLMN during communication with the serving PLMN OAM or during the (pre)configuration mechanism. If the MBSR is (pre)configured with a list of PLMNs in which the MBSR is permitted to operate as an MBSR, the MBSR is also configured with the corresponding CAG identifier for each PLMN.

[0053] Note that MBSR's CAG is part of the PNI-NPN concept.

[0054] NG-RAN and 5GC support UE access control based on the CAG identifier associated with the MBSR cell and the allowed CAG identifier of the UE that supports CAG functionality.

[0055] For cell reselection to a CAG cell, the standard provisions of this invention are as follows:

[0056] In addition to normal cell reselection, the UE may optionally use the autonomous search function to detect CAG cells on serving and non-serving frequencies. However, the UE should follow the cell reselection criteria based on dedicated frequency priority, and should only follow the autonomous cell search results if the results also meet the existing cell reselection criteria based on dedicated frequency priority.

[0057] Furthermore, the standard at the time of this invention indicates that cells can broadcast in SIB3 and SIB4 respectively a list of adjacent frequency / inter-frequency PCIs in which CAG cells can be found.

[0058] Meanwhile, according to the standards of the time of invention, the UE's reselection behavior toward a mobile IAB cell has been discussed, and it has been agreed that the UE can increase the priority of inter-frequency reselection toward a mobile IAB cell (i.e., regardless of the dedicated frequency priority of the mobile IAB cell). Under the same agenda item, RAN2 has discussed whether to add new auxiliary information to the SIB4 message to indicate adjacent frequencies and / or adjacent cells where a mobile IAB cell can be found, to assist the UE in searching for mobile IAB cells for cell reselection. RAN2 has also discussed adding a "mobile IAB indication" to the SIB1 message to inform the UE that the cell is a "mobile" IAB cell.

[0059] Since the standard requires UEs to reselect CAG cells in accordance with dedicated frequency priorities, it has been observed that if RAN2 agrees to allow UEs to increase the priority of mobile IAB cells for cell reselection, and these mobile IAB cells are also configured as CAG cells, there may be contradictions / ambiguities.

[0060] As initially observed, if a mobile IAB cell is configured as a CAG cell, and if the UE is also allowed to provide priority for the mobile IAB cell, it is unclear whether the requirement in the standard regarding dedicated frequency priority for CAG cells still applies.

[0061] If a UE is expected to respect the dedicated frequency priority when a mobile IAB cell is configured as a CAG cell, this may conflict with the original intended outcome of allowing the UE to increase the priority of the mobile IAB cell in the first case, for example, when a restricted category UE intends to operate on a mobile IAB node, such as in public safety applications, urban air traffic, etc., especially when the dedicated frequency priority of the mobile IAB CAG cell may be low (e.g., to minimize access from UEs that do not have CAG capabilities).

[0062] On the other hand, if the UE is simply allowed to ignore the dedicated frequency priority when the mobile IAB node is configured as a CAG cell, this may cause UEs that want to improve the priority of the mobile IAB CAG cell to continuously search and decode the system information of neighboring cells until they find a cell that meets the mobile IAB+CAG conditions, which may unnecessarily consume a lot of the UE's power.

[0063] Therefore, if a UE wants to prioritize mobile IAB+CAG cells for reselection, it would be beneficial to search on a reduced set of candidate cells, i.e., only decode the system information of cells that are likely mobile IAB+CAG cells.

[0064] Example embodiments of the present invention provide at least one method for reducing the set of cells on which a UE searches for mobile IAB+CAG cells for cell reselection priority ranking.

[0065] Before describing the exemplary embodiments disclosed herein in detail, please refer to Figure 3 , Figure 3 The illustrations are simplified block diagrams of various electronic devices suitable for practicing exemplary embodiments of the present invention.

[0066] Figure 3 A block diagram of one possible, non-limiting, exemplary system in which example embodiments can be practiced is shown. Figure 3 In this context, User Equipment (UE) 10 communicates wirelessly with Wireless Network 1 or Network 1, such as... Figure 3 As shown. Figure 3 The wireless network 1 or network 1 shown may include a communication network, such as a mobile network, for example, mobile network 1 or the first mobile network disclosed herein. Figure 3 Any reference to Wireless Network 1 in this document can be considered a reference to any wireless network disclosed herein. Furthermore, as... Figure 3 The wireless network 1 shown may also include hard-wired functionality that the communication network may require. A UE is a wireless device that can access the wireless network, typically a mobile device. For example, a UE may be a mobile phone (or "cell phone") and / or a computer with mobile terminal functionality. For example, a UE or mobile terminal may also be a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that performs voice signaling and / or data exchange with the RAN.

[0067] UE 10 includes one or more processors DP 10A, one or more memories MEM 10B, and one or more transceivers TRANS 10D interconnected via one or more buses. Each transceiver in the one or more transceivers TRANS10D includes a receiver and a transmitter. The one or more buses may be address, data, or control buses and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optic cable, or other optical communication device. The one or more transceivers TRANS10D may optionally be connected to one or more antennas for communication with NN 12. The one or more memories MEM 10B include computer program code PROG 10C. UE 10 communicates with NN 12 via wireless link 11 or 16.

[0068] NN 12 (NR / 5G node B, evolved NB or LTE equipment) is related to, for example Figure 3The NN 12 provides access to the wireless network 1 to wireless devices such as UE 10. The NN 12 includes one or more processors DP 12A, one or more memories MEM 12B, and one or more transceivers TRANS 12D interconnected via one or more buses. According to an example embodiment, these TRANS 12Ds may include X2 and / or Xn interfaces for performing the example embodiment. Each of the one or more transceivers TRANS 12Ds includes a receiver and a transmitter. The one or more transceivers TRANS 12Ds may optionally be connected to one or more antennas for communication with UE 10 via at least link 11. One or more memories MEM 12B and computer program code PROG 12C are configured, together with one or more processors DP 12A, to cause the NN 12 to perform one or more operations described herein. The NN 12 may communicate with another gNB or eNB, such as via link 16. Furthermore, Link 11, Link 16, and / or any other link can be wired or wireless, or both, and can implement, for example, an X2 or Xn interface. Additionally, Link 11 and / or Link 16 can be connected to other network devices, such as, but not limited to, [other network devices]. Figure 3 The NN 12 is an NCE / MME / SGW / UDM / PCF / AMF / SMF 14 device. It can perform the functions of MME (Mobility Management Entity) or SGW (Serving Gateway) (such as user plane functions) and / or LTE access management functions and similar functions for 5G.

[0069] LMF 13 (NR / 5G, evolved NB, or LTE equipment) is a network device, such as equipment including location management functions (e.g., for NR or LTE Long Term Evolution), which is compatible with devices such as... Figure 3The LMF 13 communicates with devices such as NN 12 and UE 10. The LMF 13 can be associated with mobility function devices such as AMF or SMF, and also with devices such as NN 12 and / or UE 10 and / or Wireless Network 1. The LMF 13 includes one or more processors DP 13A, one or more memories MEM 13B, one or more network interfaces, and one or more transceivers TRANS 13D interconnected via one or more buses. According to an example embodiment, these network interfaces of the LMF 13 may include X2 and / or Xn interfaces for performing the example embodiment. Each transceiver in the one or more transceivers TRANS 13D includes a receiver and a transmitter, which may optionally be connected to one or more antennas. The one or more memories MEM 13B include computer program code PROG 13C. For example, the one or more memories MEM 13B and computer program code PROG 13C are configured, together with the one or more processors DP 13A, to cause the LMF 13 to perform one or more operations described herein. LMF 13 can communicate with another mobility function device and / or eNB (e.g., NN 12 and UE 10) or any other device or NCE / MME / SGW / UDM / PCF / AMF / SMF 14 using, for example, link 11 or link 16 or another link. Figure 3 Link 16 shown can be used for communication between NN 12 and NN 13. These links can be wired, wireless, or both, and can implement, for example, an X2 or Xn interface. Furthermore, as mentioned above, links 11 and / or 16 can be connected via other network devices, such as, but not limited to, NCE / MME / SGW devices, such as… Figure 3 NCE / MME / SGW / UDM / PCF / AMF / SMF 14.

[0070] Figure 3 One or more buses of the device can be address, data, or control buses, and can include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optic or other optical communication devices, wireless channels, etc. For example, one or more transceivers TRANS12D, TRANS13D, and / or TRANS10D can be implemented as a remote radio headend (RRH), where other components of NN 12 are physically located separately from the RRH, and these devices can include one or more buses, which can be partially implemented as fiber optic cables to connect other components of NN 12 to the RRH.

[0071] Note that, although Figure 3Network nodes such as NN 12 are shown, but these nodes can be merged into eNodeBs, eNBs, or gNBs, or merged into them, for example, for LTE and NR, and can still be configured to perform the example implementation.

[0072] It should also be noted that the description in this document indicates that a "cell" performs functions, but it should be clear that the gNB, and / or user equipment, and / or mobility management function equipment that form the cell will perform these functions. Furthermore, a cell constitutes part of a gNB, and each gNB may have multiple cells.

[0073] Wireless Network 1 or any network that it may represent may or may not include NCE / MME / SGW / UDM / PCF / AMF / SMF 14, which may include NCE (Network Control Element Function), MME (Mobility Management Entity) / SGW (Serving Gateway) Function, and / or Serving Gateway (SGW), and / or MME (Mobility Management Entity) and / or SGW (Serving Gateway) Function, and / or User Data Management Function (UDM), and / or PCF (Policy Control) Function, and / or Access and Mobility Management Function (AMF) Function, and / or Session Management (SMF) Function, and / or Location Management Function (LMF), and / or Authentication Server (AUSF) Function, and provide connectivity to another network, such as a telephone network and / or a data communication network (e.g., the Internet), and be configured to perform any 5G and / or NR operations as a supplement to or replacement of other standard operations at the time of application. NCE / MME / SGW / UDM / PCF / AMF / SMF 14 can be configured to perform operations according to the example embodiments in LTE, NR, 5G and / or any standards-based communication technologies implemented or discussed at the time of this application. Furthermore, note that operations according to the example embodiments (such as those performed by NN 12 and / or LMF 13) can also be performed at NCE / MME / SGW / UDM / PCF / AMF / SMF 14.

[0074] NCE / MME / SGW / UDM / PCF / AMF / SMF 14 includes one or more processors DP 14A, one or more memory MEM 14B, and one or more network interfaces (N / WI / F) interconnected via one or more buses coupled to link 13 and / or link 16. According to an example embodiment, these network interfaces may include X2 and / or Xn interfaces for performing the example embodiment. One or more memory MEM 14Bs include computer program code PROG 14C. The one or more memory MEM 14Bs and computer program code PROG 14C are configured, together with the one or more processors DP 14A, to cause NCE / MME / SGW / UDM / PCF / AMF / SMF 14 to perform one or more operations, which may be necessary to support the operations according to the example embodiment.

[0075] Note that NN 12 and / or LMF 13 and / or UE 10 can be configured (e.g., based on standard implementations, etc.) to perform Location Management Function (LMF) functionality. LMF functionality can be implemented in any of these network devices or other devices associated with them. Furthermore, LMF functionality (such as LMF 13) can be co-located with UE 10 to allow for... Figure 3 The NN 12 and / or LMF 13 are separated to perform operations according to the example embodiments disclosed herein.

[0076] Wireless Network 1 can implement network virtualization, which is a process of combining hardware and software network resources and functions into a single software-based managed entity (i.e., a virtual network). Network virtualization involves platform virtualization (which is often combined with resource virtualization). Network virtualization is divided into two categories: one is external, which combines many networks or network parts into virtual units; the other is internal, which provides network-like functionality to software containers on a single system. Note that the virtualized entities generated by network virtualization are still implemented to some extent using hardware such as processors DP10, DP12A, DP13A and / or DP14A and memory MEM 10B, MEM 12B, MEM 13B and / or MEM 14B, and such virtualized entities also produce technical effects.

[0077] Computer-readable storage devices MEM 12B, MEM 13B, and MEM 14B can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as semiconductor-based memory devices, flash memory, magnetic storage devices and systems, optical storage devices and systems, fixed memory, and removable memory. Computer-readable storage devices MEM 12B, MEM 13B, and MEM 14B can be components for performing storage functions. Processors DP10, DP12A, DP13A, and DP14A can be of any type suitable for the local technical environment and, as a non-limiting example, can include one or more of general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), and processors based on multi-core processor architectures. Processors DP10, DP12A, DP13A, and DP14A can be components for performing functions, such as controlling UE 10, NN 12, LMF 13, and other functions described herein.

[0078] Generally, various embodiments of any of these devices may include, but are not limited to, cellular phones (such as smartphones), tablet computers, personal digital assistants (PDAs) with wireless communication capabilities, portable computers with wireless communication capabilities, image capture devices (such as digital cameras) with wireless communication capabilities, gaming devices with wireless communication capabilities, music storage and playback devices with wireless communication capabilities, internet devices that allow wireless internet access and browsing, tablet computers with radio communication capabilities, and portable units or terminals that combine such functions.

[0079] Furthermore, various embodiments of any of these devices can be used with UE vehicles, high-altitude platform stations, or any other node of this type associated with a ground network or any type of drone radio or radio in an aircraft or other airborne vehicle or a vessel (such as a ship) navigating on water.

[0080] As described above, the exemplary embodiments of the present invention provide at least one method for reducing the set of cells on which a UE searches for mobile IAB+CAG cells for cell reselection priority ranking. The following are some notable features marked with underlines. Conquest .

[0081] Assume that the UE has been configured with a set of one or more CAG identifiers by the NAS, which enables the UE to access the CAG cell.

[0082] The cell broadcasts in SIB4, where a list of adjacent PCI ranges between frequencies of CAG cells can be found. The community is Additional broadcasts in SIB4 can provide a list, or range, of adjacent PCIs between frequencies of mobile IAB cells. List .

[0083] The cell broadcasts in SIB3, which provides a list of adjacent PCI ranges within the frequency range of the CAG cell. The community is Additional broadcasts in SIB3 can provide a list, range, or range of adjacent PCIs within the frequency range of a mobile IAB cell. List .

[0084] The UE scans the SSB to find it in both the SIB4 CAG list / range and the SIB4 mobile IAB list / range. Candidate cell PCI, or UE scan SSB to find cells in both the SIB3CAG list / range and the SIB3 mobile IAB list / range. The PCI of the candidate cells is found. The UE decodes the system information at (multiple) candidate cells to verify that the cell is a mobile IAB cell and CAG cell. CAG of the UE authentication cell. logo In the set of CAG identifiers configured at the UE by the NAS that the UE is allowed to access. The UE can increase the priority of candidate cells that meet such cell reselection criteria, ignoring intra-frequency or inter-frequency priority. class .

[0085] In one possible deployment scenario, UE access to a mobile cell may be subject to CAG restrictions, which only allow subscriptions to that specific cell. CAG limitations for UEs. This also applies to situations where the UE should increase the neighboring size of both the mobile cell and the CAG cell during reselection. The priority of the area. In this case, the cells that SI will decode are mIAB and CAG cells. .

[0086] Figure 1 The detection and prioritization of mobile IAB+CAG cells using SIB4 auxiliary information are illustrated according to an example embodiment of the present invention.

[0087] Figure 1 The UE (such as) is shown Figure 3 UE10), cell A and cell B (such as Figure 3 NN12 and / or NN13) Communication between them. Figure 1 The steps shown are based on an exemplary embodiment of the invention, and these steps relate to making it desirable to improve mobility. IAB+CAG priority enables UEs used for cell reselection to more efficiently search for cells in inter-frequency neighbors (based on...). SIB4 Auxiliary Information) .

[0088] Figure 2 The detection and prioritization of mobile IAB+CAG cells using SIB3 auxiliary information are illustrated according to an example embodiment of the present invention.

[0089] Figure 2 The UE (such as) is also shown. Figure 3 UE 10), cell A and cell C (such as Figure 3 NN12 and / or Communication between NN13). Figure 2 Steps according to an exemplary embodiment of the invention are shown, which involve making desired advantages Firstly, considering mobile IAB+CAG for cell reselection, UEs can more efficiently search for adjacent cells within the same frequency range (base). (Regarding SIB3 auxiliary information) .

[0090] Note that, according to an exemplary embodiment of the present invention, Deployment does not rely on broadcast SIB4 and SIB3 information. This invention demonstrates... Example embodiments can be related to, for example, Figure 1 and / or Figure 2 Working together on any one or two of the scenarios .

[0091] Note that in Figure 1 and Figure 2 In Chinese, the term "set" refers to a list, range, or range list.

[0092] like Figure 1 As shown in step 1, the UE is configured with one or more Closed Access Group (CAG) identifiers by the Non-Access Stratum (NAS). For example... Figure 1 As shown in step 2, the UE receives system information block 4 (SIB4) from cell A, which indicates the inter-frequency adjacent CAG PCI (set C4) and the inter-frequency adjacent mobile integrated access and backhaul (IAB) physical cell identifier (PCI) (set M4). Figure 1As shown in step 3, the UE scans the Synchronization Signal Block (SSB) to find the PCI in the intersection of set C4 and set M4. Figure 1 As shown in step 4, the UE receives at least one SSB with PCI from cell B in sets C4 and M4. Figure 1 As shown in step 5, the UE identifies cell B as a candidate cell with system information to be decoded. Figure 1 As shown in step 6, the UE receives System Information Block 1 (SIB1) from cell B. SIB1 indicates that cell B is a Closed Access Group (CAG) cell and a Mobile Integrated Access and Backhaul (IAB) cell. Then, as... Figure 1 As shown in step 7, the UE decodes SIB1 and detects cell B as a mobile IAB and CAG cell in the UE CAG list; cell B is reselected, ignoring the cell's dedicated frequency priority.

[0093] like Figure 2 As shown in step 1, the UE is configured with one or more Closed Access Group (CAG) identifiers by the Non-Access Stratum (NAS). For example... Figure 2 As shown in step 2, the UE receives System Information Block 3 (SIB3) from cell A. SIB3 indicates the intra-frequency adjacent CAG PCI (set C3) and the intra-frequency adjacent Mobile Integrated Access and Backhaul (IAB) Physical Cell Identifier (PCI) (set M3). Figure 2 As shown in step 3, the UE scans the Synchronization Signal Block (SSB) to find the PCI in the intersection of set C3 and set M3. Figure 2 As shown in step 4, the UE receives from cell B at least one SSB with PCI in set C3 and set M3. Figure 2 As shown in step 5, the UE identifies cell B as a candidate cell with system information to be decoded. Figure 2 As shown in step 6, the UE receives System Information Block 1 (SIB1) from cell B. SIB1 indicates that cell B is a Closed Access Group (CAG) cell and a Mobile Integrated Access and Backhaul (IAB) cell. Then, as... Figure 2 As shown in step 7, the UE decodes SIB1 and detects cell C as a mobile IAB and CAG cell in the UE CAG list; cell B is reselected, ignoring the cell's dedicated frequency priority.

[0094] According to an exemplary embodiment of the present invention, any one of cell A, cell B, and / or cell C may be either a closed access group (CAG) cell or a mobile integrated access and backhaul (IAB) cell. Furthermore, according to an exemplary embodiment of the present invention, cell A, cell B, and / or cell C may not be a closed access group (CAG) cell or a mobile integrated access and backhaul (IAB) cell.

[0095] Figure 4 A method according to an example embodiment of the present invention is shown, which can be performed by an apparatus.

[0096] Figure 4 The diagram illustrates what can be made by, but is not limited to, network devices (e.g., such as...). Figure 3 The operations performed by devices such as UE 10. Figure 4 As shown in box 410, the device determines information about a range list in the communication network in which at least one closed access group cell may be found, and in which at least one mobile integrated access and backhaul cell may be found. Figure 4 As shown in box 420, the synchronization signal block is scanned to find the physical cell identifier of the candidate cell, which is found in both at least one system information block closed access group list or range and at least one system information block mobile integrated access and backhaul list or range. Figure 4 As shown in box 430, based on this scan, the system information at the candidate cell is decoded to verify that the candidate cell is a mobile integrated access and backhaul cell or a closed access group cell. Then, as... Figure 4 As shown in box 440, based on this decoding, the device is enabled to access candidate cells for cell reselection.

[0097] According to the example embodiment described in the preceding paragraphs, the determination is based on information broadcast from at least one system information block from a cell in the communication network.

[0098] According to the example embodiment described in the above paragraphs, the scan includes: scanning synchronization signal blocks to find the physical cell identifier of a candidate cell, which is found in at least one system information block neighbor cell list or range in the intersection of set C3 or set C4 and set M3 or set M4.

[0099] According to the example embodiments described in the above paragraphs, where based on a list or range of inter-frequency adjacent physical cell identifiers: C4 represents a list, range, or range list of inter-frequency adjacent closed access group cells; and M4 represents a list, range, or range list of inter-frequency adjacent mobile integrated access and backhaul cells, wherein scanning of physical cell identifiers in the intersection of C4 and M4 is performed.

[0100] According to the example embodiments described in the above paragraphs, where based on a list or range of adjacent physical cell identifiers within the frequency: C3 represents a list, range, or range list of adjacent closed access group cells within the frequency; and M3 represents a list, range, or range list of adjacent mobile integrated access and backhaul cells within the frequency, wherein scanning of physical cell identifiers in the intersection of C3 and M3 is performed.

[0101] According to the example embodiments described in the preceding paragraphs, the device is configured with one or more closed access group identifiers by a communication network.

[0102] According to the example embodiments described in the preceding paragraphs, based on this scan, cells of the communication network are identified as candidate cells with system information to be decoded.

[0103] According to the example embodiments described in the preceding paragraphs, based on this determination, at least one system information block is received from a cell in the communication network, the at least one system information block indicating that the cell is a closed access group cell and a mobile integrated access and backhaul cell.

[0104] According to the example embodiment described in the above paragraphs, based on the reception: decoding system information block 1; detecting the cell of the communication network as a closed access group cell and a mobile integrated access and backhaul cell in the range list of the communication network; verifying that the closed access group identifier of the detected cell is in the configuration set of the closed access group list or range of the device; and based on the verification, reselecting the cell of the communication network, wherein the reselection does not take into account the dedicated frequency priority of the cell.

[0105] A non-transient computer-readable medium (such as Figure 3 The MEM 10B shown contains stored program code (such as...). Figure 3 The program code shown is from at least one processor (such as PROG 10C). Figure 3 The DP 10A shown is executed to perform at least the operations described in the paragraphs above.

[0106] According to the exemplary embodiments of the present invention described above, there exists an apparatus comprising: a means for use by means of a device (such as...) Figure 3 UE 10 in the middle) determines (e.g. Figure 3 A component containing information about a range list in a communication network (one or more transceivers 10D, MEM 10B, PROG 10C, and DP 10A) where at least one closed access group cell and at least one mobile integrated access and backhaul cell may be found; used for scanning (e.g.) Figure 3 The component that synchronizes one or more transceivers 10D, MEM 10B, PROG 10C, and DP 10A to search for the physical cell identifier of a candidate cell found in at least one system information block closed access group list or range, and at least one system information block mobile integrated access and backhaul list or range; and the component that decodes (e.g., based on the scan) the synchronization signal block. Figure 3The system information at one or more transceivers 10D; MEM 10B; PROG 10C; and DP 10A) in the candidate cell is used to verify that the candidate cell is a mobile integrated access and backhaul cell or a closed access group cell; and the system information at the candidate cell is used to verify that the candidate cell is a mobile integrated access and backhaul cell or a closed access group cell.

[0107] In an example aspect of the invention according to the foregoing paragraphs, the components for at least determining, scanning, and decoding include a non-transient computer-readable medium [such as...]. Figure 3 [MEM 10B in the middle], the medium is made by at least one processor [such as Figure 3 DP10A] executable computer programs [such as Figure 3 The PROG 10C encoding is used.

[0108] Furthermore, according to exemplary embodiments of the present invention, there exists a circuit system for performing operations according to exemplary embodiments of the invention disclosed herein. This circuit system may include any type of circuit system, including content encoding circuit systems, content decoding circuit systems, processing circuit systems, image generation circuit systems, data analysis circuit systems, etc. Furthermore, this circuit system may include discrete circuit systems, application-specific integrated circuit systems (ASICs) and / or field-programmable gate array (FPGA) circuit systems, as well as processors specifically configured by software to perform corresponding functions, or dual-core processors having software and corresponding digital signal processors, etc. In addition, the necessary inputs and outputs of the circuit system, the functions performed by the circuit system, and the interconnections of the circuit system with other components that may include other circuit systems (possibly via inputs and outputs) are provided to perform the exemplary embodiments of the invention described herein.

[0109] According to the exemplary embodiments of the present invention disclosed in this application, the provided "circuit system" may include at least one or more, or all of the following:

[0110] (a) Hardware circuit implementation only (such as implementation only in analog and / or digital circuit systems)

[0111] now);

[0112] (b) A combination of hardware circuitry and software, such as (where applicable):

[0113] (i) A combination of (multiple) analog and / or digital hardware circuits with software / firmware; and

[0114] (ii) Any part of a hardware processor(s) having software, including digital signal processor(s), software, and memory(s), which work together to cause a device such as a mobile phone or server to perform various functions, such as those described herein.

[0115] The functions or operations of the example embodiments of the present invention disclosed herein; and

[0116] (c) (Multiple) hardware circuits and / or (multiple) processors, such as (multiple) microprocessors or a portion thereof, which require software (e.g., firmware) to operate, but may be absent when operation is not required.

[0117] According to exemplary embodiments of the present invention, there are sufficient circuit systems to perform at least the novel operations disclosed in this application according to exemplary embodiments of the present invention, wherein "circuit system" as used herein refers to at least the following:

[0118] (a) Hardware circuit implementation only (such as implementation only in analog and / or digital circuit systems)

[0119] (present); and

[0120] (b) A combination of circuitry and software (and / or firmware), such as (where applicable):

[0121] (i) A combination of (multiple) processors, or

[0122] (ii) A portion of (multiple) processors / software, including (multiple) digital signal processors, software, and (multiple) memories, which work together to cause, for example, mobile electrical...

[0123] Devices such as telephones or servers perform various functions; and

[0124] (c) Circuits such as (multiple) microprocessors or a portion thereof that require software or firmware to operate, even if the software or firmware does not exist physically.

[0125] This definition of "circuit system" applies to all uses of the term in this application, including in any claim. As another example, as used herein, the term "circuit system" will also cover an implementation of only one processor (or multiple processors) or a portion of a processor and its accompanying software and / or firmware. For example, if applicable to a particular claim element, the term "circuit system" will also cover a baseband integrated circuit or application processor integrated circuit for a mobile phone, or a similar integrated circuit in a server, cellular network device, or other network device.

[0126] Generally, various embodiments can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while others may be implemented in firmware or software, which may be executed by a controller, microprocessor, or other computing device, but the invention is not limited thereto. While various aspects of the invention may be shown and described using block diagrams, flowcharts, or some other graphical representation, it is well understood that, by way of non-limiting example, the blocks, devices, systems, techniques, or methods described herein may be implemented in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof.

[0127] Embodiments of the present invention can be implemented in various components such as integrated circuit modules. The design of integrated circuits is largely a highly automated process. Complex and powerful software tools can be used to convert logic-level designs into semiconductor circuit designs for etching and formation on semiconductor substrates.

[0128] As used herein, the term "exemplary" means "as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior to other embodiments. All embodiments described in this detailed description are exemplary embodiments intended to enable those skilled in the art to make or use the invention, and are not intended to limit the scope of the invention as defined by the claims.

[0129] The foregoing description provides a complete and informative description of the best methods and apparatus currently contemplated by the inventors for carrying out the invention, through exemplary and non-limiting examples. However, various modifications and adaptations will become apparent to those skilled in the art when read in conjunction with the accompanying drawings and claims, in light of the foregoing description. Nevertheless, all such and similar modifications to the teachings of the exemplary embodiments of the invention will still fall within the scope of the invention.

[0130] It should be noted that the terms “connection,” “coupling,” or any variation thereof refer to any direct or indirect connection or coupling between two or more elements, and may encompass the presence of one or more intermediate elements between two elements that are “connected” or “coupled” together. The coupling or connection between elements can be physical, logical, or a combination thereof. As adopted herein, as several non-limiting and non-exhaustive examples, two elements may be considered “connected” or “coupled” together by means of one or more wires, cables, and / or printed electrical connections, and by means of electromagnetic energy (such as electromagnetic energy with wavelengths in the radio frequency region, microwave region, and optical (both visible and invisible) regions).

[0131] Furthermore, some features of the preferred embodiments of the invention can be used advantageously without the need for corresponding use of other features. Therefore, the above description should be regarded as merely illustrating the principles of the invention, and not as limiting it.

Claims

1. A device for communication, comprising: At least one processor; as well as At least one non-transient memory stores instructions that, when executed by the at least one processor, cause the device to at least: Information that determines a list of ranges in a communication network in which at least one closed access group cell can be found, and in which at least one mobile integrated access and backhaul cell can be found; Scan synchronization signal blocks to find physical cell identifiers for candidate cells, the physical cell identifiers being found in at least one system information block closed access group list or range, and at least one system information block mobile integrated access and backhaul list or range. Based on the scan, the system information at the candidate cell is decoded to verify that the candidate cell is a mobile integrated access and backhaul cell or a closed access group cell; as well as Based on the decoding, the device is enabled to access the candidate cell for cell reselection.

2. The apparatus of claim 1, wherein the determination is based on: the broadcast of the information in at least one system information block from a cell of the communication network.

3. The apparatus of claim 1, wherein the scanning comprises: Scan the synchronization signal block to find the physical cell identifier of the candidate cell, which is found in at least one system information block neighbor cell list or range in the intersection of set C3 or set C4 and set M3 or set M4. Among them, the list or range of adjacent physical cell identifiers within the frequency range: C3 represents a list, range, or range list of adjacent closed access group cells within the frequency range. M3 represents a list, range, or range list of adjacent mobile integrated access and backhaul cells within the frequency range, wherein the scan is performed against physical cell identifiers in the intersection of C3 and M3; and Among them, the list or range of adjacent physical cell identifiers between frequencies: C4 represents a list, range, or range list of adjacent closed access group cells between frequencies. M4 represents a list, range, or range list of adjacent mobile integrated access and backhaul cells between frequencies, wherein the scan is performed against physical cell identifiers in the intersection of C4 and M4.

4. The apparatus of claim 3, wherein the apparatus is configured with the one or more closed access group identifiers by the communication network.

5. The apparatus of claim 1, wherein the at least one non-transient memory stores instructions, the instructions being executed by the at least one processor to cause the apparatus to at least: Based on the scan, the cells of the communication network are identified as candidate cells with system information to be decoded.

6. The apparatus of claim 5, wherein the at least one non-transient memory stores instructions, the instructions being executed by the at least one processor to cause the apparatus to at least: Based on the determination, at least one system information block is received from a cell in the communication network, the at least one system information block indicating that the cell is a closed access group cell and a mobile integrated access and backhaul cell.

7. The apparatus of claim 6, wherein the at least one non-transient memory stores instructions, the instructions being executed by the at least one processor to cause the apparatus to at least: Based on the received information: Decode system information block 1; The cells of the communication network are detected as closed access group cells and mobile integrated access and backhaul cells in the list within the range of the communication network; Verify that the detected closed access group identifier of the cell is in the closed access group list or range configuration set of the device; as well as Based on the verification, a cell of the communication network is reselected, wherein the reselection does not take into account the dedicated frequency priority of the cell.

8. A method of communication, comprising: The device determines information about a list of ranges in a communication network in which at least one closed access group cell can be found, and in which at least one mobile integrated access and backhaul cell can be found. Scan synchronization signal blocks to find physical cell identifiers for candidate cells, the physical cell identifiers being found in at least one system information block closed access group list or range, and at least one system information block mobile integrated access and backhaul list or range. Based on the scan, the system information at the candidate cell is decoded to verify that the candidate cell is a mobile integrated access and backhaul cell or a closed access group cell; as well as Based on the decoding, the device is enabled to access the candidate cell for cell reselection.

9. The method of claim 8, wherein the determination is based on: the broadcast of the information in at least one system information block from a cell of the communication network.

10. The method of claim 8, wherein the scanning comprises: Scan the synchronization signal block to find the physical cell identifier of the candidate cell, which is found in at least one system information block neighbor cell list or range in the intersection of set C3 or set C4 and set M3 or set M4. Among them, the list or range of adjacent physical cell identifiers within the frequency range: C3 represents a list, range, or range list of adjacent closed access group cells within the frequency range. M3 represents a list, range, or range list of adjacent mobile integrated access and backhaul cells within the frequency range, wherein the scan is performed against physical cell identifiers in the intersection of C3 and M3; and Among them, the list or range of adjacent physical cell identifiers between frequencies: C4 represents a list, range, or range list of adjacent closed access group cells between frequencies. M4 represents a list, range, or range list of adjacent mobile integrated access and backhaul cells between frequencies, wherein the scan is performed against physical cell identifiers in the intersection of C4 and M4.

11. The method of claim 10, wherein the apparatus is configured with the one or more closed access group identifiers by the communication network.

12. The method of claim 8, wherein the at least one non-transient memory stores instructions, the instructions being executed by the at least one processor to cause the device to at least: Based on the scan, the cells of the communication network are identified as candidate cells with system information to be decoded.

13. The method of claim 12, comprising: Based on the determination, at least one system information block is received from a cell in the communication network, the at least one system information block indicating that the cell is a closed access group cell and a mobile integrated access and backhaul cell.

14. The method of claim 13, comprising: Based on the received information: Decode system information block 1; The cells of the communication network are detected as closed access group cells and mobile integrated access and backhaul cells in the list within the range of the communication network; Verify that the detected closed access group identifier of the cell is in the closed access group list or range configuration set of the device; as well as Based on the verification, and by reselecting a cell in the communication network, wherein the reselection does not take into account the dedicated frequency priority of the cell.

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