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Efficient cell measurements during transmission gaps in a compressed mode

A transmission gap and cell technology, applied in the field of communication, can solve problems such as complex cell measurement

Active Publication Date: 2008-10-08
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Asynchronous operation at network and cell level complicates cell measurements

Method used

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  • Efficient cell measurements during transmission gaps in a compressed mode
  • Efficient cell measurements during transmission gaps in a compressed mode
  • Efficient cell measurements during transmission gaps in a compressed mode

Examples

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Embodiment Construction

[0023] As used herein, the word "exemplary" means "serving as an instance, instance, or illustration." Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs.

[0024] The cell measurement techniques described herein can be used in various asynchronous communication networks. For clarity, these techniques are described in detail below for GSM and UMTS networks.

[0025] FIG. 1 shows a public land mobile network (PLMN) 100 , which includes a GSM network 110 and a UMTS network 120 . The terms "network" and "system" are often used interchangeably. GSM is a radio access technology (RAT) that provides voice services and low to medium rate packet data services. GSM networks are widely deployed throughout the world. W-CDMA is a new radio access technology that can provide enhanced services and capabilities (eg, higher data rates, simultaneous voice and data calls, etc.). The UMTS ...

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Abstract

A terminal obtains a monitored set containing GSM neighbor cells and / or UMTS neighbor cells. The terminal operates in a compressed mode and obtains from a UMTS network at least two transmission gap pattern sequences for different measurement purposes, e.g., for ''GSM carrier RSSI measurements'' (GAP1), ''GSM initial BSIC identification'' (GAP2), and ''GSM BSIC re-confirmation'' (GAP3). The terminal makes RSSI measurements for the GSM cells using multiple transmission gap pattern sequences, e.g., using GAP1, GAP2 and GAP3. The terminal identifies the BSIC for at least one GSM cell by (1) detecting the tone on the FCCH using multiple transmission gap pattern sequences, e.g., using GAP2 and GAP3, and (2) decoding the SCH using multiple transmission gap pattern sequences, e.g., using GAP2 and GAP3. The use of multiple transmission gap pattern sequences for RSSI measurement and BSIC identification allows the terminal to complete the cell measurements and send a report sooner, which may improve performance.

Description

[0001] Cross-references to related applications [0002] This patent application claims priority to Provisional Application No. 60 / 707,815, filed August 12, 2005, entitled "IMPROVEMENTS INUMTS COMPRESSED MODE," which is assigned to the Assignment of the Invention and expressly incorporated herein by reference. technical field [0003] The present invention relates generally to communication, and more particularly to cell measurements in asynchronous communication networks. Background technique [0004] Wireless communication networks are widely deployed to provide various communication services such as voice, packet data, broadcast, messaging, and the like. These wireless networks may be able to support multiple users to communicate by sharing the available network resources. Examples of such wireless networks include code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, and frequency division multiple access (FDMA) networks. These...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04W24/10H04W36/00
CPCH04W24/10H04W36/00H04W36/0088H04W36/0085
Inventor 穆克什·K·米塔尔莫希特·纳兰斯里尼瓦桑·瓦苏德万
Owner QUALCOMM INC
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