o account for the translation from 900MHz standards. to 1800MHz and to reflect the low power handsets. 'Phones on the Move' concluded by seeking views on the follow- ing questions, which are relevant to wherever PCN type services are So that the networks could be rolled out quickly, giving faster being introduced, as in North America: geographic coverage, the notion of National Roaming was intro- duced. This would allow a number of network operators to share infrastructure. 1. Whether the market within the country will be able to support more public mobile radio operators? To allow the RF parameters for DCS1800 to be calculated, six 2. Whether improvements could be made over today's networks scenarios were examined: with the advent of the pocket radio telephone? 3. The date by which new Personal Communication Networks 1. Single MS (mobile station), single BTS (base transceiver sta- could/should be implemented? tion). 4. The most effective frequency. For example in Europe is the 2. Multiple MS and BTS where operation of BTS's is co-ordi- combination of 1.7GHz to 2.3GHz frequency channels and nated (single operator). pan-European digital cellular radio technology the most effec- 3. Multiple MS and BTS where operation of BTS's is uncoordi- tive solution for the early to mid 1990s? nated (multiple operator). 5. How much bandwidth is needed for each operator in order to 4. Collected MS. build up and maintain a viable subscriber base? 5. Collocated BTS. 6. Should handover be a feature for a Personal Communications 6. Collocation with other systems. Network? 7. Should an immediate move to seize market opportunities be The impact of each of the above on radio performance was given priority over waiting to see where future international assessed. Practical worst case conditions were assumed. One critical allocations for mobile services will be located? parameter that had to be determined was the mobile station power class. This is derived from: Following the expression of views, the government allocated PCN licences to th