For TD-SCDMA networks covering the expressway

appling high gain antennas can extend cells’ coverage

improved the co-located percentage of base stations

and reduced cost of network construction. On the other hand

regarding to the roads existing frequent handover

adopting the cell merging technique can decrease handover times and promote the coverage continuity of TD-SCDMA networks in the expressway. Furthermore

using cell merging will result in better customer perception such as quality of voice and download rates

higher carrier effi ciency and less construction cost.