Method and apparatus for indicating restricted resources of wireless terminal and for indicating access node capability to support connection with a wireless terminal with restricted capabilities

Patent metadata

Field	Value
Publication number	US-2019394668-A1
Application number	US-201916441311-A
Country	US
Kind code	A1
Filing date	Jun 14, 2019
Priority date	Jun 22, 2018
Publication date	Dec 26, 2019
Grant date	—

Abstract

An access node of a radio access network (RAN) that communicates over a radio interface with a wireless terminal. The access node comprises processor circuitry, transmitting circuitry, and receiving circuitry. The processor circuitry is configured to generate an indication of access node capability to support the wireless terminal when the wireless terminal operates in a restricted mode. The transmitting circuitry is configured to transmit the indication to the wireless terminal. The receiving circuitry is configured to receive an indication from the wireless terminal that the wireless terminal is in the restricted mode. The processor circuitry is further configured to make a determination, upon receipt of the indication from the wireless terminal, that a connection with the wireless terminal can be maintained in the restricted mode and to generate a responsive message based on the determination.

First claim

What is claimed is:

1 . A wireless terminal that participates in communications over a radio interface with an access node of a radio access network (RAN), the wireless terminal comprising:
receiving circuitry configured to receive from the access node an indication of access node capability to support the wireless terminal when the wireless terminal is operating in a restricted mode; processor circuitry configured
to make a determination if the wireless terminal is or should be in a restrictive mode and, in response to the determination,
to generate a message responsive to the indication of access node capability; and
transmitting circuitry configured to transmit the message to the access node.

2 . The apparatus of claim 1 , wherein the message responsive to the indication of access node capability is a connection release message in a case that the indication of access node capability indicates that the access node does not support the restricted mode.

3 . The apparatus of claim 1 , wherein the message responsive to the indication of access node capability comprises one of an accept connection, reconfigure connection, or release connection in a case that the indication of access node capability indicates that the access node does support the restricted mode, and wherein the message includes an indication that the wireless terminal is in the restricted mode.

4 . The wireless terminal of claim 3 , wherein the indication specifies one of plural level values depending on a corresponding one of plural types of capability restriction for the wireless terminal.

5 . The wireless terminal of claim 4 , wherein at least one of the plural level values indicates that the wireless terminal has restricted a network independent wireless terminal capability.

6 . A method in a wireless terminal that participates in communications over a radio interface with an access node of a radio access network (RAN), the method comprising:
receiving from the access node an indication of access node capability to support the wireless terminal when the wireless terminal is operating in a restricted mode; making a determination if the wireless terminal is or should be in a restrictive mode and, in response to the determination, generating a message responsive to the indication of access node capability; and transmitting the message to the access node.

7 . The method of claim 6 , wherein the message responsive to the indication of access node capability is a connection release message in a case that the indication of access node capability indicates that the access node does not support the restricted mode.

8 . The method of claim 6 , wherein the message responsive to the indication of access node capability comprises one of an accept connection, reconfigure connection, or release connection in a case that the indication of access node capability indicates that the access node does support the restricted mode, and wherein the message includes an indication that the wireless terminal is in the restricted mode.

9 . The method of claim 8 , wherein the indication specifies one of plural level values depending on a corresponding one of plural types of capability restriction for the wireless terminal.

10 . The wireless terminal of claim 9 , wherein at least one of the plural values for the level of safe mode indication indicates that the wireless terminal has restricted a network independent wireless terminal capability.

11 . An access node of a radio access network (RAN) that communicates over a radio interface with a wireless terminal, the access node comprising:
processor circuitry configured to generate an indication of access node capability to support the wireless terminal when the wireless terminal operates in a restricted mode; transmitting circuitry configured to transmit the indication to the wireless terminal; receiving circuitry configured to receive an indication from the wireless terminal that the wireless terminal is in the restricted mode; wherein the processor circuitry is further configured:
to make a determination, upon receipt of the indication from the wireless terminal, that a connection with the wireless terminal can be maintained in the restricted mode; and
to generate a responsive message to the wireless terminal based on the determination.

12 . The access node of claim 11 , wherein the responsive message is one of an accept, reconfigure, and release message.

13 . The access node of claim 11 , wherein the transmitting circuitry is configured to transmit the indication in system information.

14 . The access node of claim 11 , wherein the transmitting circuitry is configured to transmit the indication in response to a request from the wireless terminal.

15 . The access node of claim 11 , wherein the processor circuitry is further configured to make provide a restriction level indication which indicates at least one of plural levels of restricted mode of the wireless terminal which is supported by the access node.

16 . A method in an access node of a radio access network (RAN) that communicates over a radio interface with a wireless terminal, the method comprising:
generating an indication of access node capability to support the wireless terminal when the wireless terminal operates in a restricted mode; transmitting the indication to the wireless terminal; receiving an indication from the wireless terminal that the wireless terminal is in the restricted mode; making a determination, upon receipt of the indication from the wireless terminal, that a connection with the wireless terminal can be maintained in the restricted mode; generating a responsive message to the wireless terminal based on the determination.

17 . The method of claim 16 , wherein the responsive message is one of an accept, reconfigure, and release message.

18 . The method of claim 16 , further comprising transmitting the indication in system information.

19 . The method of claim 16 , further comprising transmitting the indication in response to a request from the wireless terminal.

20 . The method of claim 16 , further comprising providing a restriction level indication which indicates at least one of plural levels of restricted mode of the wireless terminal which is supported by the access node.

Assignees

• Sharp Laboratories America Inc

Inventors

• Shaheen Kamel M
• Sugiyama Edward Masami
• Aiba Tatsushi
• Yokomakura Kazunari
• Ishii Atsushi

Classifications

• H04W8/22

  Processing or transfer of terminal data, e.g. status or physical capabilities · CPC title

• H04W76/27

  Transitions between radio resource control [RRC] states · CPC title

• H04M1/72463

  to restrict the functionality of the device · CPC title

• H04W48/12

  using downlink control channel · CPC title

• H04W72/51

  based on terminal or device properties · CPC title