Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (6): 47-52.doi: 10.1016/S1005-8885(09)60524-0

• Wireless • Previous Articles     Next Articles

Investigation of the co-existing interference between TD-MBMS and TD-SCDMA/TD-HSDPA

Pei ZHAO   

  1. Research Division, China Mobile Group Design Institute Co. Ltd., Beijing 100080, China
  • Received:2010-04-09 Revised:2010-07-20 Online:2010-12-30 Published:2010-12-06
  • Contact: Pei ZHAO E-mail:zhaopei@cmdi.chinamobile.com

Abstract:

TD-MBMS is the abbreviation of time division-synchronous code division multiple access (TD-SCDMA) multimedia broadcast and multicast service (MBMS) , which was introduced in the release 6 of universal mobile telecommunications system (UMTS) in order to deliver multimedia data more efficiently. Since TD-MBMS may work on the same time slot (TS) of the same frequency with TD-SCDMA and time division-high speed downlink packet access (TD-HSDPA) as described in the unified timeslot networking (UTN) strategy, the work of co-existing interference analysis is an important research filed. This article firstly analyzes theoretically the co-existing interference between TD-MBMS and TD-SCDMA/TD-HSDPA. Then, system level simulation is used to quantify the co-existing interference under different scenarios considering the transmit power of TD-MBMS and TD-HSDPA and the load factor of TD-SCDMA network. Simulation results show that TD-SCDMA/TD-HSDPA has little impact on the TD-MBMS while the interference from TD-MBMS to TD-SCDMA/TD-HSDPA is more serious and the corresponding isolation distance is then suggested. The results are useful for radio network planning and optimization of TD-SCDMA.

Key words:

TD-MBMS, TD-HSDPA, TD-SCDMA, co-existing interference, isolation distance