Transmission level control method and transceiver apparatus in wireless local loop system

• US 8,311,571 B2
• Filed: 05/25/2011
• Issued: 11/13/2012
• Est. Priority Date: 09/24/1998
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Sato, Shoichi, Arai, Koji
• Primary Examiner(s): Nguyen, David Q
• Application Number:
  US13/115,223
• Publication Number:
  US 20110287723A1
• Time in Patent Office: 538 Days
• Field of Search: 455/522, 455/69, 455/70, 370/311
• US Class Current: 455/522
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 2001/0098 Unequal error protection
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS
• CPC Class Codes: H04W 52/281 taking into account user or data type priority

Abstract

A transmission level control method in a wireless local loop system capable of suppressing occurrence of an unnecessarily high transmission level, comprises a step of generating a required reception level corresponding to a classification of data, a step of detecting the reception level of data at a receiver side transceiver apparatus, a step of finding a level difference between the detected reception level and the required reception level corresponding to the classification of the related received data, and a step of controlling a change of the transmission level at a transmitter side transceiver apparatus according to this level difference.

Claims

1. A transceiver for communicating with another transceiver, the transceiver comprising:

a generator to generate information by using an identifier of power control change set to a predetermined value and a power control value identified by a plurality of bits and corresponding to the identifier, the information indicating either an amount of transmission level to be increased or an amount of transmission level to be decreased; and

a transmitter to transmit the information generated by the generator to another transceiver so as to be changed a transmission power of another transceiver in accordance with the information by another transceiver.