Methods and apparatus for channel access in a multi-link wireless system

Patent metadata

Field	Value
Publication number	US-12477604-B2
Application number	US-202017795526-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	May 22, 2020
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

Methods and systems for securely sending user plane data from a base station to an Artificial Intelligence (AI) server via a mobile telecommunication network are disclosed herein. A method performed by the base station located in a Radio Access Network (RAN) includes: sending an interface setup request to the (AI) server, receiving an interface setup response from the AI server, establishing, by exchanging cryptographic keys using an Internet Key Exchange (IKE) protocol, a data transport tunnel between the base station and the AI server based on an Internet Protocol Security (IPSec) network protocol, and sending the user plane data from the base station to the AI server for training artificial intelligence based models.

First claim

We claim:

1 . A method performed by a non-access point (AP) multi-link device (MLD), the method comprising:
transmitting, in at least one of an association request frame or a re-association request frame, a capability indication for a pair of wireless links, wherein the capability indication uses a bitmap to indicate the pair of links as simultaneous transmission and reception (STR) or non-STR, and the association request frame or the re-association request frame comprises a minimum value of self-interference between two links for non-AP MLD; and transmitting an information element indicating STR information, wherein the information element comprises: an element identification (ID) field indicating an ID of the information element; a length field indicating a quantity of octets following the length field in the information element; a first link ID field indicating an ID of a first link in the pair of wireless links; a second link ID field indicating an ID of a second link in the pair of wireless links; an STR bitmap field indicating an STR capability of the first link with respect to the second link; and an STR constraint field indicating at least one constraint parameter for an STR operation on the first link with respect to the second link.

2 . The method of claim 1 , wherein:
the capability indication indicates whether the non-AP MLD is capable of performing an STR operation on the pair of wireless links; the STR operation comprises, for each basic bandwidth of a first link in the pair of wireless links, at least one of:
transmitting information on the basic bandwidth of the first link when the non-AP MLD is simultaneously receiving information on a second link in the pair of wireless links, or
receiving information on the basic bandwidth of the first link when the non-AP MLD is simultaneously transmitting information on the second link.

3 . The method of claim 1 , wherein:
the capability indication comprises a plurality of bits each of which indicates whether the non-AP MLD is capable of performing an STR operation on a corresponding basic bandwidth of a first link with respect to a second link in the pair of wireless links.

4 . The method of claim 1 , wherein:
the capability indication indicates either an STR bandwidth or a non-STR bandwidth; the STR bandwidth indicates, among a plurality of basic bandwidths of a first link in the pair of wireless links, a bandwidth range on which the non-AP MLD is capable of performing an STR operation with respect to a second link in the pair of wireless links; or the non-STR bandwidth indicates, among the plurality of basic bandwidths of the first link, a bandwidth range on which the non-AP MLD is not capable of performing the STR operation with respect to the second link.

5 . The method of claim 1 , wherein the capability indication comprises one single bit indicating:
the non-AP MLD is capable of performing an STR operation on every basic bandwidth of the pair of wireless links, or the non-AP MLD is not capable of performing an STR operation on any basic bandwidth of the pair of wireless links.

6 . The method of claim 1 , wherein:
the non-AP MLD and a wireless communication node are connected by at least three wireless links having different frequency ranges; and the method comprises transmitting, to the wireless communication node, a capability information related to STR capability of the non-AP MLD on each basic bandwidth of each pair of frequency-adjacent wireless links among the at least three wireless links.

7 . The method of claim 1 , further comprising:
transmitting, to a wireless communication node, at least one operation parameter of the pair of wireless links, wherein the at least one operation parameter comprises information related to at least one of:
an STR mode indicating whether simultaneously transmitting and receiving on the pair of links are allowed,
a constrained modulation and coding scheme (MCS) indicating a maximum MCS order used by the wireless communication node to transmit information on a first link in the pair of wireless links when the wireless communication node is receiving information on a second link in the pair of wireless links,
a constrained transmission power indicating a maximum transmission power used by the wireless communication node to transmit information on the first link when the wireless communication node is receiving information on the second link,
a constrained transmission bandwidth indicating a maximum transmission bandwidth used by the wireless communication node to transmit information on the first link when the wireless communication node is receiving information on the second link, or
a constrained data unit length indicating a maximum data unit length used by the wireless communication node to transmit information on the first link when the wireless communication node is receiving information on the second link.

8 . The method of claim 1 , wherein the information element further comprises:
an STR control field indicating, for each constraint parameter, whether the constraint parameter is present in the STR constraint field of the information element.

9 . The method of claim 1 , further comprising:
receiving, from a wireless communication node, a second capability information related to STR capability of the wireless communication node on each basic bandwidth of the pair of wireless links between the non-AP MLD and the wireless communication node.

10 . The method of claim 9 , wherein the STR capability of the wireless communication node indicates, for each basic bandwidth of a first link in the pair of wireless links, at least one of:
whether the wireless communication node is capable of transmitting information on the basic bandwidth of the first link when the wireless communication node is simultaneously receiving information on a second link in the pair of wireless links; or whether the wireless communication node is capable of receiving information on the basic bandwidth of the first link when the wireless communication node is simultaneously transmitting information on the second link.

11 . The method of claim 1 , further comprising:
receiving data on a first link in the pair of wireless links; generating a first indication indicating that the first link is busy during the receiving; stopping, based on the first indication, a contention for a channel access on a non-STR bandwidth of a second link in the pair of wireless links.

12 . The method of claim 1 , wherein:
the capability indication comprises a threshold; for each of a plurality of basic bandwidths of a first link in the pair of wireless links, the capability indication indicates whether an STR operation can be performed on the basic bandwidth with respect to a second link in the pair of wireless links, based on a distance between a center frequency of the basic bandwidth and a center frequency of a using bandwidth of the second link; the STR operation can be performed when the distance is greater than the threshold; the STR operation cannot be performed when the distance is less than the threshold.

13 . A method performed by a wireless communication node, the method comprising:
receiving, in at least one of an association request frame or a re-association request frame, a capability indication for a pair of wireless links, wherein the capability indication uses a bitmap to indicate the pair of links as simultaneous transmission and reception (STR) or non-STR, and the association request frame or re-association request frame comprises a minimum value of self interference between two links for non-AP MLD; and rec

Assignees

• Zte Corp

Inventors

• Han Zhiqiang
• Sun Bo
• Fang Yonggang

Classifications

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W76/15 Primary

  Setup of multiple wireless link connections · CPC title

• H04W74/0816 Primary

  with collision avoidance · CPC title