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EP-4742817-A2 - BASE STATION OPERATION TO RESTRICT ACCESS BY REDUCED CAPABILITY USER EQUIPMENT

EP4742817A2EP 4742817 A2EP4742817 A2EP 4742817A2EP-4742817-A2

Abstract

There is provided a method, comprising: at a reduced capability (redcap) user equipment (UE) configured to connect to a base station of a wireless network: receiving, from the base station, a broadcast including access restrictions, wherein the access restrictions include a first set of predetermined criteria that must be satisfied for the redcap UE to camp on the base station; determining whether the redcap UE satisfies the first set of predetermined criteria; when the redcap UE satisfies the first set of predetermined criteria, performing a random access channel(RACH) procedure to camp on the base station; and generating, for transmission to the base station, redcap UE capability information associated with a second set of predetermined criteria that must be satisfied for the redcap UE to establish a radio resource control (RRC) connection with the base station.

Inventors

  • PALLE VENKATA, Naveen Kumar R.
  • ZHANG, DAWEI
  • HU, HAIJING
  • HE, HONG
  • VANGALA, SARMA V.
  • VAMANAN, Sudeep Manithara
  • ZENG, WEI
  • CHEN, YUQIN

Assignees

  • Apple Inc.

Dates

Publication Date
20260513
Application Date
20200806

Claims (10)

  1. A method, comprising: at a reduced capability, redcap, user equipment, UE, configured to connect to a base station of a wireless network: receiving, from the base station, a broadcast including access restrictions, wherein the access restrictions include a first set of predetermined criteria that must be satisfied for the redcap UE to camp on the base station; determining whether the redcap UE satisfies the first set of predetermined criteria; when the redcap UE satisfies the first set of predetermined criteria, performing a random access channel, RACH, procedure to camp on the base station; and generating, for transmission to the base station, redcap UE capability information associated with a second set of predetermined criteria that must be satisfied for the redcap UE to establish a radio resource control, RRC, connection with the base station.
  2. The method of claim 1, wherein the first set of predetermined criteria comprises a category of UEs, wherein the redcap UE is a member of one or more categories of UEs.
  3. The method of either of claims 1 or 2, wherein the first set of predetermined criteria includes one of a minimum downlink bandwidth or a minimum uplink bandwidth supported by the redcap UE.
  4. The method of any preceding claim, further comprising: receiving a request for the redcap UE capability information from the base station.
  5. The method of any preceding claim, wherein the redcap UE capability information includes one of downlink and uplink data rates, a number multiple in multiple out, MIMO, layers, numerology, minimum and maximum hybrid automatic repeat request, HARQ, physical downlink shared channel, PDSCH, latency requirements or physical uplink shared channel, PUSCH, latency requirements.
  6. The method of any preceding claim, further comprising: receiving a radio resource control, RRC, configuration transmission from the base station when the redcap UE capability information satisfies the second set of predetermined criteria.
  7. The method of any of claims 1 to 5, wherein the operations further comprising: receiving a rejection transmission from the base station when the redcap UE capability information does not satisfy the second set of predetermined criteria.
  8. The method of claim 7, wherein the rejection transmission comprises an indication of a second base station that supports capabilities of the redcap UE.
  9. A processor configured to perform any of the methods of claim 1-8.
  10. A redcap UE configured to perform any of the methods of claim 1-8.

Description

BACKGROUND 5G new radio (NR) wireless communications support a variety of different types of user equipment (UEs). For example, in addition to mobile phones, 5G NR supports internet of things (IoT) devices, industrial IoT (IIoT) devices, wearable devices, etc. Some of these devices are known as reduced capability (RedCap) UEs, which have varying wireless capabilities compared to other UEs. There may be situations where the network would like to treat RedCap UEs differently than other types of UEs. Summary Some exemplary embodiments are related to a base station having a processor and a transceiver communicatively connected to the processor. The processor is configured to perform operations. The operations include broadcasting access restrictions to one or more user equipment (UE) within a cell coverage area of the base station, wherein the access restrictions include one or more predetermined criteria that must be satisfied for a UE to be allowed to camp on the base station and performing a random access channel (RACH) procedure to allow the UE to camp on the base station when the UE satisfies the one or more predetermined criteria. Other exemplary embodiments are related to a method performed by a base station of a wireless network. The method includes broadcasting access restrictions to one or more user equipment (UE) within a cell coverage area of the base station, wherein the access restrictions include one or more predetermined criteria that must be satisfied for a UE to be allowed to camp on the base station and performing a random access channel (RACH) procedure to allow the UE to camp on the base station when the UE satisfies the one or more predetermined criteria. Still further exemplary embodiments are related to a baseband processor configured to perform operations. The operations include broadcasting access restrictions to one or more user equipment (UE) within a cell coverage area of a base station, wherein the access restrictions include one or more predetermined criteria that must be satisfied for a UE to be allowed to camp on the base station and performing a random access channel (RACH) procedure to allow the UE to camp on the base station when the UE satisfies the one or more predetermined criteria. Brief Description of the Drawings Fig. 1 shows an exemplary network arrangement according to various exemplary embodiments.Fig. 2 shows an exemplary UE according to various exemplary embodiments.Fig. 3 shows an exemplary base station configured to establish a connection with a user equipment according to various exemplary embodiments.Fig. 4 is a signaling diagram illustrating a registration procedure according to various exemplary embodiments. Detailed Description The exemplary embodiments may be further understood with reference to the following description and the related appended drawings, wherein like elements are provided with the same reference numerals. The exemplary embodiments describe a device, system and method for a 5G new radio (NR) network to restrict access to the network by certain types of user equipment (UE). The exemplary embodiments are described with regard to a network that includes 5G new radio NR radio access technology (RAT). However, the exemplary embodiments may be implemented in other types of networks using the principles described herein. The exemplary embodiments are also described with regard to a UE. However, the use of a UE is merely for illustrative purposes. The exemplary embodiments may be utilized with any electronic component that may establish a connection with a network and is configured with the hardware, software, and/or firmware to exchange information and data with the network. Therefore, the UE as described herein is used to represent any electronic component. As noted above, there are various UEs, each having different capabilities that connect to the 5G NR network. However, in a given area, it may not be beneficial to have different UEs having different capabilities camped on the same cell since reduced capability UEs may utilize different parameters for wireless communications (e.g., bandwidth parts, data rates, etc.) than other UEs (e.g., mobile phones, laptops, etc.), meaning the cell would need to tailor its communications to all types of UEs. Thus, there may be instances where the network would like to treat the reduced capability (RedCap) UEs differently from other types of UEs. Prior to describing the exemplary embodiments, several examples of RedCap UEs and their characteristics will be described. In a first example, devices in industrial settings such as temperature or humidity sensors may be connected industry devices. However, such devices are stationary, are not latency critical, and are fairly uncomplex with respect to their capabilities and hardware. These devices typically do not require the low latency data exchange provided by ultra reliable low latency communication (URLLC) or IIoT. It is also expected that these devices will ope