05732076 is referenced by 273 patents and cites 16 patents.

An integrated communication system supporting multiple TDMA or TDD communication protocols whereby both protocols are supported within the same geographic region. Each protocol defines time frames and/or time slots of a different duration, from which is derived a composite time frame having a predefined timing structure. A first base station unit communicates in a first set of time slots of the composite time frame according to a first TDMA or TDD protocol, and a second base station unit (which may be collocated with the first base station unit) communicates in a second set of time slots of the composite time frame according to a second TDMA or TDD protocol. Coordinating electronics (such as a GPS receiver in one or both base station units) are provided so as to prevent collisions between communications occurring between each base station unit and its respective users. In a particular embodiment, a first protocol is a GSM protocol, and a second protocol is a TDD protocol utilizing spread spectrum techniques. The TDD protocol is structured so that each time slot is twice the duration of a GSM time slot, and each time frame is four times the duration of a GSM time frame. The system may comprise a number of "stacked" base stations in a single cell, each operating over a different frequency or using different spreading codes.

Title
Coexisting communication systems
Application Number
8/548544
Publication Number
5732076
Application Date
October 26, 1995
Publication Date
March 24, 1998
Inventor
Wesley Masenten
Irvine
CA, US
Robert C Dixon
Colorado Springs
CO, US
Thomas J Ketseoglou
Colorado Springs
CO, US
Agent
Lyon & Lyon
Assignee
Omnipoint Corporation
CO, US
IPC
H04J 3/16
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