INFORMATION EXCHANGE METHOD AND DEVICE

• US 20180176855A1
• Filed: 05/06/2016
• Published: 06/21/2018
• Est. Priority Date: 06/03/2015
• Status: Active Grant

• Current Assignee: Datang Mobile Communications Equipment Company Limited (China Information Communication Technology Group Co. Ltd.)
• Original Assignee: China Academy of Telecom Technology (China Information Communication Technology Group Co. Ltd.)
• Inventors: LIU, Jiamin
• Granted Patent: US 10,609,625 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 92/10 between terminal device and access point, i.e. wireless air interface
• CPC Class Codes: H04W 92/20 between access points

Abstract

An information exchange method and device for addressing a coordination problem between different access points (APs) caused by low exchange efficiency between the APs. The information exchange method provided in an embodiment of the present invention comprises: determining, by a transmitting AP, an air interface broadcast resource for transmitting information to a receiving AP; and transmitting, by the transmitting AP and based on the determined air interface broadcast resource, the information to the receiving AP in a broadcast form. Adopting the embodiment of the present invention not only allows an air interface transmission to be performed between the APs, but also allows communication between more than two APs. One AP can transmit information thereof, in the broadcast form, to all neighboring APs having a needing to exchange information therewith, thereby improving coordination efficiency between the APs.

Claims

1. A method for exchanging information, the method comprising:

determining, by a transmitting Access Point (AP), an air interface broadcast resource for transmitting information to a receiving AP; and

transmitting, by the transmitting AP, information to the receiving AP by broadcasting the information over the determined air interface broadcast resource.

2. The method according to claim 1, wherein the determining, by the transmitting AP, the air interface broadcast resource for transmitting information to the receiving AP comprises:

determining, by the transmitting AP, a periodic air interface broadcast resource;

or

when the transmitting AP needs to transmit information to the receiving AP, determining, by the transmitting AP, an air interface broadcast resource for currently transmitting information to the receiving AP;

or

determining, by the transmitting AP, the air interface broadcast resource as configured by a first network-side device;

or

selecting, by the transmitting AP, the air interface broadcast resource for transmitting information to the receiving AP from a preset pool of air interface broadcast resources;

or

selecting, by the transmitting AP, the air interface broadcast resource for transmitting information to the receiving AP from a pool of air interface broadcast resources configured by a second network-side device.

3. The method according to claim 2, wherein before the transmitting AP receives the air interface broadcast resource transmitted by the first network-side device, the method further comprises:

transmitting, by the transmitting AP, a resource request message comprising resource demand information to the first network-side device to request for the air interface broadcast resource.

4. The method according to claim 2, wherein the first network-side device is any one of the following network-side devices:

a centralized control node managing respective APs in a preset area range;

an Operation Administration and Maintenance (OAM) entity; and

a cluster head AP which is an AP selected from a set of APs comprising the transmitting AP, wherein any one AP in the set and the cluster head AP can receive air interface information transmitted from each other by broadcasting the information;

and/or,

wherein the second network-side device is a centralized control node managing respective APs in a preset area range, or an Operation Administration and Maintenance (OAM) entity.

6. The method according to claim 1, wherein after the transmitting AP transmits the information to the receiving AP by broadcasting the information over the determined air interface broadcast resource, the method further comprises:

determining, by the transmitting AP, whether the information transmitted by the transmitting AP over the selected air interface broadcast resource is transmitted successfully, according to a feedback message of the receiving AP for the information; and

if the information is not transmitted successfully, then reselecting an air interface broadcast resource, and retransmitting the information over the reselected air interface broadcast resource.

7. The method according to claim 6, wherein the determining, by the transmitting AP, whether the information transmitted by the transmitting AP is transmitted successfully, according to the feedback message of the receiving AP for the information comprises:

determining, by the transmitting AP, whether the information transmitted by the transmitting AP is transmitted successfully, according to a feedback message of any one receiving AP for the information;

or

determining, by the transmitting AP, whether the information transmitted by the transmitting AP is transmitted successfully, according to a feedback message of a cluster head AP for the information, wherein the cluster head AP is an AP selected from a set of APs comprising the transmitting AP, and any one AP in the set and the cluster head AP can receive air interface information transmitted from each other by broadcasting the information.

8. The method according to claim 2, wherein after the transmitting AP selects the air interface broadcast resource for transmitting information to the receiving AP, the method further comprises:

transmitting, by the transmitting AP, resource preemption signaling to the receiving AP to indicate the air interface broadcast resource selected by the transmitting AP.

9. The method according to claim 8, wherein the determining, by the transmitting AP, the air interface broadcast resource for transmitting information to the receiving AP comprises:

determining, by the transmitting AP, whether the selected air interface broadcast resource is preempted successfully, according to a feedback message of the receiving AP for the resource preemption signaling; and

determining, by the transmitting AP, the selected air interface broadcast resource as the air interface broadcast resource for transmitting information to the receiving AP, upon determining that the selected air interface broadcast resource is preempted successfully.

10. The method according to claim 9, wherein the determining, by the transmitting AP, whether the selected air interface broadcast resource is preempted successfully, according to the feedback message of the receiving AP for the resource preemption signaling comprises:

determining, by the transmitting AP, whether the selected air interface broadcast resource is preempted successfully, according to a feedback message of any one receiving AP for the resource preemption signaling;

or

determining, by the transmitting AP, whether the selected air interface broadcast resource is preempted successfully, according to a feedback message of a cluster head AP for the resource preemption signaling, wherein the cluster head AP is an AP selected from a set of APs comprising the transmitting AP, and any one AP in the set and the cluster head AP can receive air interface information transmitted from each other by broadcasting the information.

5. (canceled)

11. A method for exchanging information, the method comprising:

configuring, by a first network-side device, a transmitting Access Point (AP) with an air interface broadcast resource for the transmitting AP to transmit information to a receiving AP; and

transmitting, by the first network-side device, the configured air interface broadcast resource to the transmitting AP so that the transmitting AP transmits information to the receiving AP by broadcasting the information over the air interface broadcast resource.

12. The method according to claim 11, wherein the configuring, by the first network-side device, the transmitting AP with the air interface broadcast resource comprises:

configuring, by the first network-side device, the transmitting AP with a periodic air interface broadcast resource;

or

configuring, by the first network-side device, the transmitting AP with an air interface broadcast resource for currently transmitting information to the receiving AP, upon determining that the transmitting AP needs to transmit information to the receiving AP;

or

receiving, by the first network-side device, a resource request message transmitted by the transmitting AP, and configuring the transmitting AP with the air interface broadcast resource according to resource demand information in the resource request message;

or

when the first network-side device is a cluster head AP, determining, by the cluster head AP, the air interface broadcast resource for the transmitting AP from a preset pool of air interface broadcast resources;

or

when the first network-side device is a cluster head AP, configuring, by the cluster head AP, the transmitting AP with the air interface broadcast resource from a pool of air interface broadcast resources configured by a second network-side device.

13. The method according to claim 11, wherein after the first network-side device configures the transmitting AP with the air interface broadcast resource, the method further comprises:

indicating, by the first network-side device, the air interface broadcast resource configured for the transmitting AP to respective receiving APs for the transmitting AP so that each receiving AP receives information transmitted from the transmitting AP by broadcasting the information, over the air interface broadcast resource.

14. The method according to claim 11, wherein the first network-side device is any one of the following network-side devices:

a centralized control node managing respective APs in a preset area range;

an Operation Administration and Maintenance (OAM) entity; and

a cluster head AP which is an AP selected from a set of APs comprising the transmitting AP, wherein any one AP in the set and the cluster head AP can receive air interface information transmitted from each other by broadcasting the information;

and/or,

wherein the second network-side device is a centralized control node managing respective APs in a preset area range, or an Operation Administration and Maintenance (OAM) entity.

15. (canceled)

16. A method for exchanging information, the method comprising:

configuring, by a second network-side device, a pool of air interface broadcast resources; and

transmitting, by the second network-side device, configuration information of the pool of air interface broadcast resources so that each Access Point (AP) transmits information to other APs by broadcasting the information over an air interface broadcast resource in the pool of air interface broadcast resources.

17. The method according to claim 16, wherein transmitting, by the second network-side device, the configuration information of the pool of air interface broadcast resources comprises:

transmitting, by the second network-side device, the configuration information of the pool of air interface broadcast resources to respective APs in a preset area range so that each AP selects an air interface broadcast resource for transmitting information to the other APs from the pool of air interface broadcast resources;

or

transmitting, by the second network-side device, the configuration information of the pool of air interface broadcast resources to a cluster head AP in each set of APs in a preset area range so that the cluster head AP configures air interface broadcast resources for the APs in the set of AP comprising the cluster head AP, wherein for each set of APs, any one AP in the set and the cluster head AP can receive air interface information transmitted from each other by broadcasting the information.

18. A method for exchanging information, the method comprising:

determining, by a receiving Access Point (AP), an air interface broadcast resource occupied by a transmitting AP; and

receiving, by the receiving AP, information transmitted from the transmitting AP by broadcasting the information, over the determined air interface broadcast resource.

19. The method according to claim 18, wherein the determining, by the receiving AP, the air interface broadcast resource occupied by the transmitting AP comprises:

determining, by the receiving AP, a periodic air interface broadcast resource occupied by the transmitting AP;

or

determining, by the receiving AP, an air interface broadcast resource to be occupied by the transmitting AP for currently transmitting information;

or

determining, by the receiving AP, the air interface broadcast resource of the transmitting AP as indicated by a first network-side device;

or

determining, by the receiving AP, the air interface broadcast resource of the transmitting AP from a pool of air interface broadcast resources configured by a second network-side device, wherein the pool of air interface broadcast resources comprises air interface broadcast resources which can be occupied by respective APs in a preset area range;

or

receiving, by the receiving AP, resource preemption signaling transmitted by any one transmitting AP, and determining an air interface broadcast resource indicated in the resource preemption signaling as the air interface broadcast resource occupied by the any one transmitting AP.

20. The method according to claim 19, wherein after the receiving AP receives the resource preemption signaling transmitted by the any one transmitting AP, the method further comprises:

transmitting, by the receiving AP, a feedback message for the resource preemption signaling to the any one transmitting AP.

21. The method according to claim 18, wherein after the receiving AP receives the information transmitted from the transmitting AP by broadcasting the information, over the determined air interface broadcast resource, the method further comprises:

transmitting, by the receiving AP, a feedback message for the received information to the transmitting AP.

22. The method according to claim 18, wherein the receiving AP is a cluster head AP which is an AP selected from a set of APs comprising the cluster head AP, wherein any one AP in the set and the cluster head AP can receive air interface information transmitted from each other by broadcasting the information.

23-42. -42. (canceled)