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Uplink scheduling and adjacent-channel coupling loss analysis for TD-LTE deployment
Woon-Young Yeo1, Sung Ho Moon2, Jae-Hoon Kim3
1Department of Information and Communication Engineering, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul 143-747, Republic of Korea.
Thescientificworldjournal
|April 8, 2014
Summary
Deploying Time Division-Duplex Long-Term Evolution (TD-LTE) alongside WiMax or other TD-LTE networks is feasible. Synchronization between networks is key to mitigating adjacent channel interference (ACI) and ensuring smooth coexistence.
Area of Science:
- Telecommunications Engineering
- Wireless Communication Systems
Background:
- Time Division-Duplex Long-Term Evolution (TD-LTE) offers advantages and is expected for rapid deployment.
- WiMax networks may coexist with TD-LTE, and multiple TD-LTE operators may share adjacent frequency bands.
Purpose of the Study:
- Analyze coexistence challenges between TD-LTE and other systems, specifically WiMax.
- Provide essential requirements for successful network coexistence.
- Investigate frame synchronization, uplink scheduling, and interference mitigation strategies.
Main Methods:
- Examined frame synchronization between TD-LTE and WiMax configurations.
- Proposed an uplink scheduling algorithm to leverage adjacent channel interference (ACI) leakage patterns.
- Analyzed unsynchronized coexistence requirements using adjacent-channel coupling loss.
Main Results:
- Coexistence of TD-LTE with other Time Division-Duplex (TDD) systems is achievable when networks are synchronized.
- An uplink scheduling algorithm can effectively utilize ACI leakage in synchronized operations.
- Unsychronized TDD networks require specific cell-site engineering to reduce ACI.
Conclusions:
- Network synchronization is crucial for successful TD-LTE coexistence with other TDD systems.
- Advanced cell-site engineering techniques may be necessary for unsynchronized deployments.
- The study provides valuable insights for operators planning network upgrades and deployments.
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