# US 8,542,644 B2 · Method for requesting uplink resources and transmitting uplink data

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- Number: US 8,542,644 B2
- Document ID: US8542644B2
- Status: Granted
- Kind: B2
- Application number: 13/057,441
- Filed: 2009-08-27
- Published: 2011-06-09
- Granted: 2013-09-24
- Earliest claimed: 2008-08-29
- Assignees: LG Electronics Inc.
- Applicants: Hee Jeong Cho; Ki Seon Ryu
- Inventors: Hee Jeong Cho; Ki Seon Ryu
- Web page: https://patentgrep.com/patent/US8542644B2

## CPC

- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method for requesting uplink resources and transmitting data is provided. The method includes being allocated to a BR code from a BS by an MS, and transmitting a BR indicator in a format without an ID of the MS to the BS using the BR code in non-contention mode by the MS. Because contention-based MSs and non-contention-based MSs transmit different uplink allocation request information, unnecessary information transmission is avoided, which is efficient. Also, information specific to each MS can be transmitted in extra resources.

## Claims

### Claim 1

A method for requesting uplink allocation using a Bandwidth Request (BR) code index in a Mobile Station (MS), the method comprising:
being allocated to a BR code from a Base Station (BS);
transmitting a BR indicator in a format without an Identifier (ID) of the MS to the BS using the BR code in non-contention mode; and
determining not to use the BR code, upon receipt of an invalid BR code through an uplink grant message from the BS.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the BR code allocation comprises:
transmitting a Dynamic Service Addition-REQuest (DSA-REQ) message for a predetermined service to the BS; and
receiving the BR code from the BS through a Dynamic Service Addition-ReSPonse (DSA-RSP) message.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the BR code allocation comprises:
transmitting a BR indicator in a format with the ID of the MS to the BS in contention mode; and
receiving the BR code from the BS through an uplink grant message.

### Claim 4 (depends on 1)

The method according to claim 1, further comprising determining not to use the BR code, if a BR indicator is not transmitted until a timer for the BR code expires after the transmission of the BR indicator.

### Claim 5 (depends on 1)

The method according to claim 1, further comprising requesting release of the BR code through a Dynamic Service Deletion-REQuest (DSD-REQ) message, when the MS determines not to use the BR code.

### Claim 6

A method for replying to an uplink allocation request that uses a Bandwidth Request (BR) code index in a Base Station (BS), the method comprising:
receiving a BR indicator from a Mobile Station (MS);
determining that the BR indicator is in a non-contention mode format, upon detection of a BR code allocated to the MS by the BS from the BR indicator; and
determining that the BR indicator is in a contention mode format, if the BR code is not detected from the BR indicator; and
transmitting an invalid BR code through an uplink grant message to the MS, when the BR code is allocated to the MS and the BS determines to release the BR code.

### Claim 7 (depends on 6)

The method according to claim 6, further comprising:
receiving a Dynamic Service Addition-REQuest (DSA-REQ) message for a predetermined service from the MS; and
transmitting the BR code to the MS by a Dynamic Service Addition-ReSPonse (DSA-RSP) message.

### Claim 8 (depends on 6)

The method according to claim 6, further comprising:
receiving a BR indicator in a format with an Identifier (ID) of the MS to the BS in contention mode; and
transmitting the BR code to the MS through an uplink grant message.

### Claim 9 (depends on 6)

The method according to claim 6, further comprising releasing the BR code, if the BR code is allocated to the MS and a BR indicator is not received using the BR code from the MS until a timer for the BR code expires.

### Claim 10 (depends on 6)

The method according to claim 6, further comprising releasing the BR code, when the BR code is allocated to the MS and a BR code release request is received from the MS through a Dynamic Service Deletion-REQuest (DSD-REQ) message.

### Claim 11

A method for transmitting uplink data using a Bandwidth Request (BR) code index in a Mobile Station (MS), the method comprising:
being allocated to a BR code from a Base Station (BS);
transmitting a BR indicator in a format without an Identifier (ID) of the MS to the BS using the BR code in non-contention mode; and
transmitting, upon receipt of an uplink grant message, data to the BS through resources allocated by the uplink grant message,
wherein, if an invalid BR code is received from the BS through the uplink grant message, the MS determines not to use the BR code.