Electronic device and method for wireless communication

Patent metadata

Field	Value
Publication number	US-11095405-B2
Application number	US-201816492159-A
Country	US
Kind code	B2
Filing date	May 3, 2018
Priority date	May 11, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

Provided are an electronic device and method for wireless communication. The electronic device comprises: a processing circuit used to determine, for each user, a cooperation range of the user on the basis of a statistical model indicating distribution of access points within a pre-determined range around the user and a communication quality requirement of the user; and a set of cooperative access points for the user determined on the basis of the cooperation range, wherein an access point in the set of cooperative access points is assigned to the user to perform cooperative transmission.

First claim

The invention claimed is:

1. An electronic device for wireless communications, comprising:
processing circuitry, configured to:
determine, with respect to each user, based on a statistical model representing a distribution of access points within a predetermined range around the user and a communication quality requirement of the user, a cooperation range of the user;
determine, based on the cooperation range, an access points cooperation set of the user,
wherein an access point in the access points cooperation set is allocated to the user to perform cooperative transmission; and
determine, with respect to each user, based on the cooperation range of the user, an interference range of the user,
wherein an access point in the interference range of the user generates interferences to the user when serving another user.

2. The electronic device according to claim 1 , wherein the processing circuitry is configured to determine, with respect to each user, based on the cooperation range of the user and an interference range of another user, the access points cooperation set of the user.

3. The electronic device according to claim 2 , wherein the processing circuitry is configured to select access points located within the cooperation range of the user and outside of the interference range of another user to form the access points cooperation set of the user.

4. The electronic device according to claim 1 , wherein the processing circuitry is further configured to construct the statistical model or determine parameters of a predetermined statistical model based on an actual distribution of the access points.

5. The electronic device according to claim 1 , wherein the processing circuitry is further configured to select an access point for cooperative transmission from among the access points cooperation set, based on a ratio of a useful signal provided to the user by the access point to total interferences generated by the access point to other users.

6. The electronic device according to claim 5 , wherein the processing circuitry is configured to calculate the ratio based on location information of each user and the access point and transmission power of the access point.

7. The electronic device according to claim 5 , wherein the processing circuitry is configured to repeat the following operations when allocating access points to each user: selecting, from among user and access point pairs formed by the access point corresponding to the largest ratio of each user and the user, a user and access point pair which results in the largest enhancement in a sum utility value for all users, and not taking this user and access point pair into consideration in the next allocation, wherein the sum utility value reflects overall communication quality for all the users.

8. The electronic device according to claim 7 , wherein the processing circuitry is configured to stop the allocation of the access points when the sum utility value converges or begins to decrease.

9. The electronic device according to claim 7 , wherein the processing circuitry is configured to stop, when the communication quality requirement of a user is satisfied, the allocation of access points for the user.

10. The electronic device according to claim 7 , wherein the sum utility value is a function of the communication quality of the user, the communication quality of the user is calculated based on the location information of the user and each access point and a transmission power of each access point.

11. The electronic device according to claim 1 , wherein the processing circuitry is configured to allocate, in a case that there is a user whose communication quality requirement is not satisfied when the access points allocation for all the users is completed, the access points for the user whose communication quality requirement is not satisfied in a new frequency band.

12. The electronic device according to claim 1 , wherein the access points comprise base stations and/or mobile base stations within a predetermined range around the user.

13. The electronic device according to claim 2 , wherein, a ratio of an interference radius of the interference range to a cooperation radius of the cooperation range is determined by a ratio of a received useful signal threshold to a received interference signal threshold of the user.

14. The electronic device according to claim 13 , wherein the processing circuitry is configured to calculate the cooperation radius of the user by causing a signal to interference and noise ratio of the user calculated based on the statistical model to be larger than or equal to a signal to interference and noise ratio threshold.

15. The electronic device according to claim 1 , further comprising:
transceiving circuitry, configured to receive location information and a communication quality requirement of each user, wherein the transceiving circuitry is further configured to receive at least one of the following: information of a received useful signal threshold and a received interference signal threshold of each user, location information and or information of a maximum transmission power of each access point.

16. An electronic device for wireless communications, comprising:
processing circuitry, configured to:
acquire a statistical model representing a distribution of access points within a predetermined range around a user;
determine, based on the statistical model and a communication quality requirement of the user, a cooperation range of the user, which is provided to a management apparatus for use in allocation of access points for the user; and
determine an interference range according to the cooperation range,
wherein an access point within the interference range generates interferences to the user when serving another user, and the interference range is provided to the management apparatus for use in allocation of access points for the user.

17. An electronic device for wireless communications, comprising:
processing circuitry, configured to:
acquire location information and a communication quality requirement of a user and a statistical model representing a distribution of access points within a predetermined range around the user;
determine, based on the statistical model and the communication quality requirement of the user, a cooperation range of the user, which is provided to a management apparatus for use in allocation of access points for the user; and
determine an interference range of the user according to the cooperation range of the user,
wherein an access point within the interference range of the user generates interferences to the user when serving another user, and the interference range of the user is provided to the management apparatus for use in allocation of access points for the user.

Assignees

• Sony Corp

Inventors

• Zhao Youping
• Zhu Dongzhi
• Sun Chen
• Guo Xin
• Liu Kangyi
• Ding Wei

Classifications

• H04W72/543

  based on requested quality, e.g. QoS · CPC title

• H04W72/51

  based on terminal or device properties · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04L5/0035 Primary

  Resource allocation in a cooperative multipoint environment · CPC title

• H04W28/16

  Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service] · CPC title