1992年7月至2005年3月，在中國(guó)電子科技集團(tuán)公司第二十研究所工作，主要研究方向?yàn)橐苿?dòng)無(wú)線通信系統(tǒng)體制和關(guān)鍵技術(shù)。

自2005年3月起，在西安電子科技大學(xué)綜合業(yè)務(wù)網(wǎng)國(guó)家重點(diǎn)實(shí)驗(yàn)室工作，從事寬帶無(wú)線接入的教學(xué)和科研工作。主要研究方向?yàn)闊o(wú)線自組織網(wǎng)絡(luò)、WiMAX和WLAN。

2007年7月至2008年5月，在英國(guó)貝德福德大學(xué)（University of Bedfordshire）留學(xué)（博士后），在該校CWiND實(shí)驗(yàn)室（Centre for Wireless Network Design）從事無(wú)線網(wǎng)絡(luò)規(guī)劃和優(yōu)化的教學(xué)和科研工作。主要研究方向?yàn)閷拵�無(wú)線接入網(wǎng)絡(luò)規(guī)劃和優(yōu)化。

2008年5月返回西安電子科技大學(xué)，主要研究方向?yàn)閷拵�無(wú)線接入系統(tǒng)和關(guān)鍵技術(shù)。

先后在國(guó)內(nèi)外學(xué)術(shù)刊物和會(huì)議上發(fā)表五十余篇論文。

1.主持1項(xiàng)國(guó)家自然科學(xué)基金項(xiàng)目：無(wú)線傳感器網(wǎng)絡(luò)中基于博弈論思想的媒體接入控制協(xié)議研究。研究期限：2008年1月1日 ~ 2010年12月31日。

2.主持1項(xiàng)“十一五”軍事通信技術(shù)預(yù)研項(xiàng)目：寬帶無(wú)線綜合接入技術(shù)。研究期限：2006年1月1日 ~ 2010年12月31日。

3.主持1項(xiàng)陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃項(xiàng)目：WiMAX的MIMO-OFDMA/FH技術(shù)研究。研究期限：2007年1月1日 ~ 2008年12月31日。

4.參與2項(xiàng)“十一五”軍事通信技術(shù)預(yù)研項(xiàng)目：多輸入多輸出技術(shù)、高速TCM編譯技術(shù)。

5.參與1項(xiàng)歐盟FP6項(xiàng)目GAWIND: Application of High Performance Computing (HPC) in automatic wireless broadband access network planning and optimization, PhD Fellowship.

1.Liqiang Zhao, Jie Zhang, and Hailin Zhang, Hub-Polling-based IEEE 802.11 PCF with Integrated QoS Differentiation, to appear in Wiley Journal of Wireless Communications and Mobile Computing.

2.Liqiang Zhao, Huawei Zhang, Jie Zhang, and Hailin Zhang, Selfish Traffic with Rational Nodes in WLANs, IEEE Communications Letters, September 2008, Vol. 12, No. 9, pp. 645-647.

3.Liqiang Zhao, Joyce Y. Wu, Hailin Zhang, and Jie Zhang, Integrated QoS Differentiation over IEEE 802.11 WLANs, IET Communications, April 2008, Vol. 2, No. 2, pp. 329-335.

4.Liqiang Zhao, Jie Zhang, and Hailin Zhang, Using Incompletely Cooperative Game Theory in Wireless Mesh Networks, IEEE Network, January/February 2008, Vol. 22, No. 1, pp. 39-44.

5.Liqiang Zhao, Jie Zhang, and Hailin Zhang, Directional DCF - A MAC Protocol to Simultaneously Support Both Omni-directional and Smart Antennas in a Same WLAN Cell, IET Communications, August 2007, Vol. 1, No. 4, pp. 765-771.

6.Liqiang Zhao, Jie Zhang, and Hailin Zhang, GDCF: A Game-theoretic Distributed Coordination Function in WLANs, Electronics Letters, April 26 2007, Vol. 43, No. 9, pp. 510-511.

7.Liqiang Zhao, Changxin Fan, Enhancement of QoS Differentiation over IEEE 802.11 WLAN, IEEE Communications Letters, August 2004, Vol. 8, Issue 8, pp. 494-496.

8.Liqiang Zhao, Changxin Fan, M-PCF: modified IEEE 802.11 PCF protocol implementing QoS, IEE Electronics Letters, November 2002, Vol. 38, No. 24, pp. 1611-1613.

9.Liqiang Zhao, Hailin Zhang, and Yi Liu, MAC protocol to support hybrid antennas in wireless LAN, Journal of Electronics (China), May 2007, Vol. 24, No. 3, pp. 309-315.

1.Liqiang Zhao, Le Guo, Kun Yang, and Hailin Zhang, “An Energy-efficient MAC Protocol for WSNs: Game-theoretic Constraint Optimization,” IEEE International Conference on Communication Systems (ICCS), 19-21 November 2008, Guangzhou, China.

2.Liqiang Zhao, Jie Zhang and Hailin Zhang, “Game-theoretic Particle Swarm Optimization for WMNs,” IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 15-18 September 2008, Glamorous Cannes, France.

3.Liqiang Zhao, Xiangyi Zou, Jie Zhang, Hailin Zhang, and Raymond Kwan, “Game-theoretic Cross-layer Design in WLANs,” IEEE International Wireless Communications and Mobile Computing Conference (IWCMC), 6-8 August 2008, Crete Island, Greece.

4.Liqiang Zhao, Li Cong, Jie Zhang and Hailin Zhang, “Game-theoretic EDCA in IEEE 802.11e WLANs,” IEEE Vehicular Technology Conference (VTC), 21-24 September 2008, Calgary, Canada.

5.Liqiang Zhao, Jie Zhang, and Hailin Zhang, “Using Incompletely Cooperative Game Theory in Wireless Sensor Networks,” IEEE Wireless Communications and Networking Conference (WCNC), Las Vegas, USA, 31 March - 3 April 2008.

6.Liqiang Zhao, Jie Zhang, Kun Yang, and Hailin Zhang, Using Incompletely Cooperative Game Theory in Mobile Ad Hoc Networks, Proceeding of IEEE ICC07 (International Conference on Communications), Glasgow, UK, 24-27 June 2007.

高水平期刊的審稿人，包括IEEE期刊（如Wireless Communications Magazine、Transactions on Wireless Communications等）、IET期刊（如Electronics Letters等）和Wiley期刊。

IEEE會(huì)議（如Globecom 2009）的TPC成員。