# US 2013/0157706 A1 · Method of making a coexistence decision on hybrid topology

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- Number: US 2013/0157706 A1
- Document ID: US20130157706A1
- Status: Published application
- Kind: A1
- Application number: 13/820,054
- Filed: 2011-08-31
- Published: 2013-06-20
- Earliest claimed: 2010-09-03
- Assignees: LG Electronics Inc.
- Inventors: Junho Jo; Jihyun Lee
- Web page: https://patentgrep.com/patent/US20130157706A1

## CPC

- H04W 72/20: Control channels or signalling for resource management
- H04N 21/43637: {involving a wireless protocol, e.g. Bluetooth®, RF or wireless LAN [IEEE 802.11] (arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114)}
- H04N 21/643: Communication protocols {(network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65)}
- H04W 4/00: Services specially adapted for wireless communication networks; Facilities therefor
- H04W 16/14: Spectrum sharing arrangements {between different networks}
- H04W 72/04: Wireless resource allocation
- H04W 72/56: based on priority criteria
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Disclosed is a radio technology independent method for coexistence among dissimilar or independently operated TV Band Device (TVBD) networks and dissimilar TV Band Devices. A resource allocation method on Hybrid topology is disclosed, which comprises steps of receiving at least one available resource; performing a neighbor set calculation based on the received at least one available resource; calculating the resource according to the neighbor set calculation; receiving at least one channel list set from each of the coexistence manager (CM) entity; determining whether there is any conflict channel list set among the received channel list set, and either transmitting a confirmation message or a channel list set changing request message to CM entity based on the determination result.

## Claims

### Claim 1

A method of allocating a resource in wireless communication system, the method comprising:
receiving at least one available resource from a TV database (TVDB) entity, wherein the at least one available resource is received by either a coexistence discovery and information server (CDIS) entity or coexistence manager (CM) entity;
performing, by the CDIS entity, a neighbor set calculation based on the received at least one available resource, wherein the neighbor of at least one coexistence manager (CM) entity is calculated by the neighbor set calculation;
calculating, by the CDIS entity, the resource according to the neighbor set calculation;
receiving at least one channel list set from each of the CM entity;
determining whether there is any conflict channel list set among the received channel list set;
after determining step, transmitting a confirmation message to those CM entities having no conflict channel list set or transmitting a channel list set changing request message to those CM entity having conflict channel set.

### Claim 2 (depends on 1)

The method of claim 1, wherein the at least one received available resource is an available TV whitespace channel list or a whitespace map.

### Claim 3 (depends on 1)

The method of claim 1, wherein the at least one received available resource is received after transmitting a request for the available resource to the TVDB entity.

### Claim 4 (depends on 1)

The method of claim 1, wherein the at least one received available resource is periodically received from the TVDB entity.

### Claim 5 (depends on 1)

The method of claim 1, wherein the neighbor set calculation includes a computation of a coexistence contour to discover the neighbor of the at least one CM entity.

### Claim 6 (depends on 1)

The method of claim 1, wherein the resource is calculated by making a coexistence whitespace map (CWM).

### Claim 7 (depends on 1)

The method of claim 1, wherein the determination of conflict channel list set is performed by checking a priority table in the CDIS entity.

### Claim 8 (depends on 1)

The method of claim 1, wherein all steps are implemented in IEEE 802.19.1.

### Claim 9

An apparatus for allocating a resource in wireless communication system, the apparatus comprising:
a controller to perform the steps of;
receiving at least one available resource from a TV database (TVDB) entity, wherein the at least one available resource is received by either a coexistence discovery and information server (CDIS) entity or coexistence manager (CM) entity;
performing, by the CDIS entity, a neighbor set calculation based on the received at least one available resource, wherein the neighbor of at least one coexistence manager (CM) entity is calculated by the neighbor set calculation;
calculating, by the CDIS entity, the resource according to the neighbor set calculation;
receiving at least one channel list set from each of the CM entity;
determining whether there is any conflict channel list set among the received channel list set;
after determining step, transmitting a confirmation message to those CM entities having no conflict channel list set or transmitting a channel list set changing request message to those CM entity having conflict channel set.