To: Ashley Campbell who wrote (1057 ) 5/14/1998 3:40:00 PM From: Bayclipper Respond to of 3436
Ashley, what I like about this latest release most is the last line...implementation can be immediate... Gordon Thursday May 14, 2:18 pm Eastern Time Company Press Release Motorola Demonstrates Long Range GSM Capability - 300% More Coverage With New Extended Cell Feature SWINDON, U.K.--(BUSINESS WIRE)--May 14, 1998--Global Systems for Mobile (GSM) Communications operators can now achieve three times the coverage from their GSM network with no additional infrastructure, following successful trials of a new software feature developed by Motorola, Inc.'s Cellular Infrastructure Group (CIG). Spanish GSM operator Telefonica Moviles has carried out trials of the new 'Extended Range Cell'(1) feature which greatly extends the reach of a GSM cell. The trials, the first undertaken using a commercial GSM network, took place on Mallorca, one of the Mediterranean Balearic Islands group. The theoretical maximum coverage range of a GSM cell is inherent in the technical specification of the system and is limited to 35km. With Motorola CIG's Extended Range Cell Feature, the range of a GSM cell can be increased up to 121km depending on local terrain. The benefit of Motorola CIG's Extended Range Cell Feature is that it enables operators to extend coverage without the necessity of installing new cell sites. The Extended Range Cell feature is specifically designed to provide coverage in flat rural areas where population densities are low and where installation of additional cell sites is economically unviable. The new feature can also be deployed in coastal areas to provide GSM coverage in offshore waters, opening up new opportunities for GSM operators to target subscribers in areas such as tourism, sailing and the fishing industries The Mallorca trials were conducted jointly by Telefonica and Motorola CIG. Trials were carried out using both in-car and handportable GSM phones, and involved drive testing, pedestrian usage and an offshore test. In the latter, a GSM terminal was installed on the ferry which trades between Mallorca and Ibiza, a distance of 120km. In all tests the Extended Range Cell Feature enabled calls to be set up and successfully maintained at distances up to 121km. The Extended Range Cell Feature was also successfully tested using Synthesiser Frequency Hopping.(2) Adrian Nemcek, Corporate Vice President and General Manager of Motorola's European Cellular Infrastructure Group, said: ''Motorola continues to lead the field in introducing innovative value to GSM infrastructure with a comprehensive suite of coverage and capacity network enhancements. Working with Telefonica Moviles, one of the most successful GSM operators in the world, we have once again introduced technically superior solutions to meet operator and subscriber needs.'' Motorola CIG, part of the Cellular Network and Space Sector, is a pioneer in the development, manufacture and deployment of cellular networks worldwide. To date, CIG has cellular networks deployed in more than 80 countries. CIG has more than 10,000 employees and major development and manufacturing facilities in Illinois, Texas, Brazil and the United Kingdom. Motorola, Inc. is one of the world's leading providers of wireless communications, semiconductors, and advanced electronic systems, components and services. Motorola's 1997 sales were $29.8 billion. For more information on Motorola CIG, please visit our web site at mot.com Notes for Editors (1)Extended Range Cell Feature The current limitation on the range of a GSM cell site to 35km is mandated by the duration of the standard timeslots defined in the GSM specification. The maximum distance is given by the maximum time that the signal from the mobile/BTS needs to reach the receiver of the mobile/BTS on time to be successfully heard. At the air interface the delay between the transmission of the downlink (BTS) and the uplink (mobile) has an offset of 3 timeslots. Until now the mobile station has used a timing advance to compensate for the propagation delay as the distance to the BTS changes. This timing advance is defined in the GSM specification as 64 bits, which gives the theoretical maximum BTS/mobile separation as 35km. With the Motorola CIG Extended Range Cell Feature, the BTS is able to receive the uplink signal in two adjacent timeslots instead of one. When the mobile station reaches its maximum timing advance, i.e. maximum range, the BTS expands its hearing window with an internal timing advance that gives the necessary time for the mobile to be heard by the BTS even from the extended distance. This extra advance is the duration of a single timeslot, a 156 bit period. (2)Synthesiser Frequency Hopping Synthesiser Frequency Hopping helps ensure that the number of frequencies is not limited by the number of radios. The technique permits a single cell to utilise more than one frequency by hopping from one to another in each successive time frame, reducing the effects of fading and interference. The technique makes use of existing handsets and requires no additional spectrum. The implementation can be immediate. Contact: