As one of next-generation wireless communication systems, Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) is committed to provide technologies for high data rates and system capacity. Further, LTE-Advanced (LTE-A) was defined to support new components for LTE to meet higher communication demands. Local area services are considered as popular issues to be improved, and by reusing spectrum resources local data rates have been increased dramatically. However, the unlicensed spectrum reuse may bring inconvenience for local service providers to guarantee a stable controlled environment, e.g., ad hoc network, which is not in the control of the base station (BS) or other central nodes. Hence, accessing to the licensed spectrum has attracted much attention.

Device-to-Device (D2D) communication is a technology component for LTE-A. The existing researches allow D2D as an underlay to the cellular network to increase the spectral efficiency. In D2D communication, user equipments (UEs) transmit data signals to each other over a direct link using the cellular resources instead of through the BS, which differs from femtocell where users communicate with the help of small low-power cellular base stations. D2D users communicate directly while remaining controlled under the BS. Therefore, the potential of improving spectral utilization has promoted much work in recent years, which shows that D2D can improve system performances by reusing cellular resources. As a result, D2D is expected to be a key feature supported by next generation cellular networks.

Books
  1. Lingyang Song, Dusit Niyato, Zhu Han, and Ekram Hossain, “Wireless Device-to- Device Communications and Networks,” contract with Cambridge University Press, UK.

  2. Chen Xu, Lingyang Song, and Zhu Han, "Resource Management for Device-to-Device Underlay Communication," Series: SpringerBriefs in Computer Science, 2013

Tutorial
  1. Shahid Mumtaz, "Smart Direct-LTE Communication: An Energy Saving Perspective," IEEE 77th Vehicular Technology Conference: VTC2013-Spring, 2-5 June 2013, Dresden, Germany
  2. Lingyang Song and Zhu Han, “Resource Allocation for Device-to-Device Communications,” IEEE International Conference on Communications in China (ICCC 2013), Xi’ An, Aug. 2013
  3. Lingyang Song and Zhu Han, “Device-to-Device Communications and Networks,” IEEE Globe Communication Conference (Globecom), Atlanta, USA, Dec. 2013.

Survey
  1. Lingyang Song, Dusit Niyato, Zhu Han, and Ekram Hossain, "Game-theoretic Resource Allocation Methods for Device-to-Device (D2D) Communication," IEEE Wireless Communications Magazine, vol. 21, no. 3, pp. 136-144, Jun. 2014.
  2. L. Wei, R. Q. Hu, Y. Qian, and G. Wu, "Enable device-to-device communications underlaying cellular networks: challenges and research aspects," IEEE Communications Magazine, vol. 52, no. 6, pp. 90-96, Jun. 2014.
  3. L. Lei, Z. Zhong, C. Lin, and X. Shen, "Operator controlled device-to-device communications in LTE-advanced networks," IEEE Wireless Communications, vol. 19, no. 3, pp. 96-104, June 2012.
  4. K. Doppler, M. Rinne, C. Wijting, C. B. Ribeiro, K. Hugl, "Device-to-device communication as an underlay to LTE-advanced networks," IEEE Communications Magazine, vol. 47, no. 12, pp. 42-49, Dec. 2009.
  5. A. Osseiran, K. Doppler, C. Ribeiro, M. Xiao, M. Skoglund, and J. Manssour, "Advances in device-to-device communications and network coding for IMT-Advanced,"  ICT Mobile Summit, 2009.
  6. A. Asadi, Q. Wang, and V. Mancuso, "A Survey on Device-to-Device Communication in Cellular Networks," IEEE Communications Surveys & Tutorials, vol. 16, no. 4, pp. 1801-1819, Nov. 2014.

Basics of D2D Communications
      Basics of D2D Communications Procedures
    1. Overview of D2D Communications
    2. Device Discovery
    3. Device Association
    4. Synchronization
    5. Mode Selection
    6. Power Control
    7. Interference-aware Beamforming
    8. Uplink and Downlink Transmission with MIMO
    9. Device-to-Device Local Area Networks
    10. Issues and Challenges in D2D Communications
    K. J. Zou, M. Wang, K. W. Yang, J. Zhang, W. Sheng, Q. Chen, and X. You, "Proximity discovery for device-to-device communications over a cellular network," IEEE Communications Magazine, vol. 52, no. 6, pp. 98-107, June. 2014.
    L. Lei, Y. Zhang, X. Shen, C. Lin, and Z, Zhong, "Performance Analysis of Device-to-Device Communications with Dynamic Interference Using Stochastic Petri Nets," IEEE Transactions on Wireless Communications, vol. 12, no. 12, pp. 6121-6141, 2013.
    J. Hong, S. Park, H. Kim, S. Choi, and K. B. Lee, "Analysis of Device-to-Device discovery and link setup in LTE networks," in Proceeding of IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), pp. 2856-2860, 2013.
    P. Huang, E. Qi, M. Park, and A. Stephens, "Energy efficient and scalable device-to-device discovery protocol with fast discovery," in Proceeding of IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), pp. 1-9, 2013.
    M. C. Erturk, S. Mukherjee, H. Ishii, and H. Arslan, "Distributions of Transmit Power and SINR in Device-to-Device Networks," IEEE Communications Letters, vol. 17, no. 2, pp. 273-276, February 2013.
    K. Doppler, C. B. Ribeiro, and J. Kneckt, "Advances in D2D communications: Energy efficient service and device discovery radio," in Proceedings of Wireless VITAE, pp. 1–6, 2011.
    T. Koskela, S. Hakola, T. Chen, and J. Lehtomäki, "Clustering Concept Using Device-To-Device Communication in Cellular System," in Proc. IEEE Wireless Communications and Networking Conference (WCNC), pp. 1-6, April 2010.
    C.-H. Yu, K. Doppler, C. Ribeiro, and O. Tirkkonen, "Performance impact of fading interference to Device-to-Device communication underlaying cellular networks," in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 858-862, Sept. 2009.
    K. Doppler, M. P. Rinne, P. Janis, C. Ribeiro, and K. Hugl, "Device-to-Device Communications; Functional Prospects for LTE-Advanced Networks," in Proc. IEEE International Conference on Communications Workshops, ICC Workshops 2009, pp. 1-6, June 2009.
    C.-H. Yu, O. Tirkkonen, K. Doppler, and C. Ribeiro, "On the Performance of Device-to-Device Underlay Communication with Simple Power Control," in Proc. IEEE Vehicular Technology Conference, VTC Spring 2009, pp. 1-5, April 2009.
    B. Xing, K. Seada, and N. Venkatasubramanian, "An Experimental Study on Wi-Fi Ad-Hoc Mode for Mobile Device-to-Device Video Delivery," in Proc. IEEE INFOCOM Workshops, pp. 1-6, April 2009.
    B. Kaufman, and B. Aazhang, "Cellular networks with an overlaid device to device network," in Proc. Asilomar Conference on Signals, Systems and Computers, pp. 1537-1541, Oct. 2008.
    M. N. Tehrani, M. Uysal, and H. Yanikomeroglu, "Device-to-device communication in 5G cellular networks: challenges, solutions, and future directions," in IEEE Communications Magazine, pp. 86-92, May. 2014.
Mode Selection, Resource Management,and Security for D2D Communications
      Mode Selection for D2D Communications Underlaying Cellular Networks
    1. Mode Selection Problem
    2. Approaches to Solve the Mode Selection Problem
    3. An Optimization-Based Approach for Mode Selection
    4. A Coalitional Game Based Approach for Mode Selection
    M. Jung, K. Hwang, and S. Choi, "Joint mode selection and power allocation scheme for power-efficient device-to-device (D2D) communication," in Proceedings of IEEE VTC-Spring, pp. 1–5, 2012.
    J. C. Li, M. Lei, and F. Gao, “Device-to-device (D2D) communication in MU-MIMO cellular networks,” in Proceedings of IEEE GLOBECOM, pp. 3583–3587, Dec. 2012.
    J. Seppala, T. Koskela, T. Chen, and S. Hakola, "Network controlled Device-to-Device (D2D) and cluster multicast concept for LTE and LTE-A networks," in Proc. IEEE Wireless Communications and Networking Conference (WCNC), pp. 986-991, March 2011.
    H. Min, W. Seo, J. Lee, S. Park, and D. Hong, "Reliability Improvement Using Receive Mode Selection in the Device-to-Device Uplink Period Underlaying Cellular Networks," IEEE Transactions on Wireless Communications, vol. 10, no. 2, pp. 413-418, February 2011.
    K. Doppler, C.-H. Yu, C. B. Ribeiro, and P. Janis, "Mode Selection for Device-To-Device Communication Underlaying an LTE-Advanced Network," in Proc. IEEE Wireless Communications and Networking Conference (WCNC), pp. 1-6, April 2010.
    S. Hakola, T. Chen, J. Lehtomaki, and T. Koskela, "Device-To-Device (D2D) Communication in Cellular Network - Performance Analysis of Optimum and Practical Communication Mode Selection," in Proc. IEEE Wireless Communications and Networking Conference (WCNC), pp. 1-6, April 2010.
      Interference Coordination
    1. Interference Analysis
    2. Interference Avoidance
    3. Power Control
        4. Introduction of Downlink and Uplink Power Control
        Distributed Power Control
        Network Controlled Power Control
        Power Control using MIMO
    B. Guo, S. Sun, and Q. Gao, "Downlink interference management for D2D communication underlying cellular networks," in Proceeding of IEEE/CIC International Conference on Communications in China - Workshops (CIC/ICCC), pp. 193-196, 2013.
    J. Shin, J. P. Choi, and J.-W. Choi, "An autonomous interference avoidance scheme for D2D communications through frequency overhearing," in Proceeding of International Conference on ICT Convergence (ICTC), pp. 1074-1075, 2013.
    S. Shalmashi, G. Miao, and S. Ben Slimane, "Interference management for multiple device-to-device communications underlaying cellular networks," in Proceeding of IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), pp. 223-227, 2013.
    J. Liu, M. Sheng, Y. Zhang, X. Wang, H. Sun, and Y. Shi, "A Distributed Opportunistic scheduling protocol for device-to-device communications," in Proceeding of IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), pp. 1715-1719, 2013.
    H. Tang, C. Zhu, and Z. Ding, "Cooperative MIMO precoding for D2D underlay in cellular networks," in Proceeding of IEEE International Conference on Communications (ICC), pp. 5517-5521, 2013.
    W. Xu, L. Liang, H. Zhang, S. Jin, J. C. Li, and M. Lei, “Performance enhanced transmission in device-to-device communications: Beamforming or interference cancellation?” in Proceedings of IEEE GLOBECOM, pp. 4296–4301, Dec. 2012.
    H. E. Elkotby, K. M. Elsayed, and M. H. Ismail, “Exploiting interference alignment for sum rate enhancement in D2D-enabled cellular networks,”in Proceedings of IEEE WCNC, pp. 1624–1629, 2012.
    C.-H. Yu and O. Tirkkonen, “Device-to-device underlay cellular network based on rate splitting,” in Proceedings of IEEE WCNC, pp. 262–266, 2012
    H. Min, J. Lee, S. Park, and D. Hong, "Capacity Enhancement Using an Interference Limited Area for Device-to-Device Uplink Underlaying Cellular Networks," IEEE Transactions on Wireless Communications, vol. 10, no. 12, pp. 3995-4000, December 2011.
    X. Xiao, X. Tao, and J. Lu, "A QoS-Aware Power Optimization Scheme in OFDMA Systems with Integrated Device-to-Device (D2D) Communications," in Proc. IEEE Vehicular Technology Conference (VTC Fall), pp.1,5, 5-8 Sept. 2011.
    J. Gu, S. Bae, B. Choi, and M. Chung, "Dynamic power control mechanism for interference coordination of device-to-device communication in cellular networks," in Proc. International Conference on Ubiquitous and Future Networks (ICUFN), pp. 71-75, June 2011.
    S. Xu, H. Wang, T. Chen, Q. Huang, and T. Peng, "Effective Interference Cancellation Scheme for Device-to-Device Communication Underlaying Cellular Networks," in Proc. IEEE Vehicular Technology Conference Fall (VTC 2010-Fall), pp. 1-5, Sept. 2010.
    H. Xing, S. Hakola, "The investigation of power control schemes for a device-to-device communication integrated into OFDMA cellular system," in Proc. IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), pp. 1775-1780, Sept. 2010.
    T. Peng, Q. Lu, H. Wang, S. Xu, and W. Wang, "Interference avoidance mechanisms in the hybrid cellular and device-to-device systems," in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 617-621, Sept. 2009.
    P. Janis, V. Koivunen, C. B. Ribeiro, K. Doppler, and K. Hugl, "Interference-avoiding MIMO schemes for device-to-device radio underlaying cellular networks," in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 2385-2389, Sept. 2009.
    C.-H. Yu, O. Tirkkonen, K. Doppler, and C. Ribeiro, "Power Optimization of Device-to-Device Communication Underlaying Cellular Communication," in Proc. IEEE International Conference on Communications, pp. 1-5, June 2009.

      Resource Management for D2D Communications
    1. Spectrum Sharing
      1. D2D Underlaying Communications
      2. D2D Overlaying Communications
    2. Subcarrier Allocation
      1. Centralized (Operator Managed) Subcarrier Allocation
      2. Distributed (Network-Controlled) Subcarrier Allocation
    3. Time-Domain Scheduling
      1. Stakelberg-type Game Based Scheduling in Time-Domain
      2. Joint Frequency-Time-Domain Scheduling
    L. Lei, Y. Kuang, X. (Sherman) Shen, C. Lin, and Z. Zhong, "Resource Control in Network Assisted Device-to-Device Communications: Solutions and Challenges," IEEE Communication Magazine, vol. 52, no. 6, pp. 108-117, Jun. 2014.
    D. Zhu, J. Wang, A. L. Swindlehurst, and C. Zhao, "Downlink Resource Reuse for Device-to-Device Communications Underlaying Cellular Networks," IEEE Signal Processing Letters, vol. 21, no. 5, pp. 531-534, May 2014.
    M. Hasan, E. Hossain, and D. Kim, "Resource Allocation Under Channel Uncertainties for Relay-Aided Device-to-Device Communication Underlaying LTE-A Cellular Networks," IEEE Transactions on Wireless Communications, Mar. 2014.
    D. Wu, J. Wang, R. Q. Hu, Y. Cai, and L. Zhou, "Energy-Efficient Resource Sharing for Mobile Device-to-Device Multimedia Communications," IEEE Transactions on Vehicular Technology, Mar. 2014.
    D. Lee, K. Choi, W. Jeon, and D. Jeong, "Two-Stage Semi-Distributed Resource Management for Device-to-Device Communication in Cellular Networks," IEEE Transactions on Wireless Communications, Feb. 2014.
    J. Han, Q. Cui, C. Yang, and X. Tao, "Bipartite matching approach to optimal resource allocation in device to device underlaying cellular network," Electronics Letters, vol. 50, no. 3, pp. 212-214, Jan. 2014.
    Y. Pei, and Y. Liang, "Resource allocation for device-to-device communication overlaying two-way cellular networks," in Proceeding of IEEE Wireless Communications and Networking Conference (WCNC), pp. 3346-3351, 2013.
    R. Zhang, X. Cheng, L. Yang, and B. Jiao, "Interference-aware graph based resource sharing for device-to-device communications underlaying cellular networks," in Proceeding of IEEE Wireless Communications and Networking Conference (WCNC), pp. 140-145, 2013.
    Q. Liu, H. Yu, and C. W. Chen, "Enhancing multimedia QoS with device-to-device communication as an underlay in lte networks," in Proceeding of IEEE International Conference on Multimedia and Expo (ICME), pp. 1-6, 2013.
    B. Zhou, S. Ma, J. Xu, and Z. Li, "Group-wise channel sensing and resource pre-allocation for LTE D2D on ISM band," in Proceeding of IEEE Wireless Communications and Networking Conference (WCNC), pp. 118-122, 2013.
    P. Phunchongharn, E. Hossain, and D. I. Kim, "Resource allocation for device-to-device communications underlaying LTE-advanced networks," IEEE Wireless Communications, vol. 20, no. 4, pp. 91-100, 2013.
    H. Wang, K. Xia, and X. Chu, "On the position-based resource-sharing for Device-to-Device communications underlaying cellular networks," in Proceedings of IEEE/CIC International Conference on Communications in China (ICCC), pp. 135-140, 2013.
    B. Zhou, S. Ma, J. Xu, and Z. Li, "Group-wise channel sensing and resource pre-allocation for LTE D2D on ISM band," in Proceedings of IEEE WCNC, pp. 118–122, 2013.
    R. Zhang, X. Cheng, L. Yang, and B. Jiao, "Interference-aware graph based resource sharing for device-to-device communications underlayingcellular networks," in Proceedings of IEEE WCNC, pp. 140–145, 2013.
    L. Su, Y. Ji, P. Wang, and F. Liu, "Resource allocation using particle swarm optimization for D2D communication underlay of cellular networks," in Proceedings of IEEE WCNC, pp. 129–133, 2013.
    P. Phunchongharn, E. Hossain, and D. I. Kim, "Resource allocation for device-to-device communications underlaying LTE-advanced networks," IEEE Wireless Communications, vol. 20, no. 4, Aug. 2013.
    Yiyang Pei, and Ying-Chang Liang, "Resource Allocation for Device-to-Device Communications Overlaying Two-Way Cellular Networks," IEEE Transactions on Wireless Communications, vol. 12, no. 7, pp. 3611-3621, Jul. 2013.
    Bin Zhou, Honglin Hu, Sheng-Qiang Huang, and Hsiao-Hwa Chen, "Intracluster Device-to-Device Relay Algorithm With Optimal Resource Utilization," IEEE Transactions on Vehicular Technology, vol. 62, no. 5, pp. 2315-2326, Jun. 2013.
    J. Wang, D. Zhu, C. Zhao, J. C. F. Li, and M. Lei, "Resource Sharing of Underlaying Device-to-Device and Uplink Cellular Communications," IEEE Communications Letters, vol. 17, no. 6, pp. 1148-1151, Jun. 2013.
    M. C. Erturk, S. Mukherjee, H. Ishii, and H. Arslan, "Distributions of Transmit Power and SINR in Device-to-Device Networks," IEEE Communications Letters, vol. 17, no. 2, pp. 273-276, Feb. 2013.
    Hongliang Zhang, Tianyu Wang, Lingyang Song, and Zhu Han, “Graph-based Resource Allocation for D2D Communications Underlaying Cellular Networks,” International Workshop on Device-Device Communication and Networks, Aug. 12, Xi’ An, China, Aug. 2013.
    D. H. Lee, K. W. Choi, W. S. Jeon, and D. G. Jeong, "Resource allocation scheme for device-to-device communication for maximizing spatial reuse," in Proc. IEEE WCNC 2013, Shanghai, China, Apr. 2013.
    F. Wang, L. Song, Z. Han, Q. Zhao, and X. Wang,"Joint Scheduling and Resource Allocation for Device-to-Device Underlay Communication," in Proc. IEEE Wireless Communications and Networking Conference (WCNC), April 2013.
    B. Kaufman, J. Lilleberg, and B. Aazhang, "Spectrum Sharing Scheme Between Cellular Users and Ad-hoc Device-to-Device Users," IEEE Transactions on Wireless Communications, vol. 12, no. 3, pp. 1038-1049, March 2013.
    C. Xu, L. Song, Z. Han, Q. Zhao, X. Wang, X. Cheng, and B. Jiao, "Efficiency Resource Allocation for Device-to-Device Underlay Communication Systems: A Reverse Iterative Combinatorial Auction Based Approach, " IEEE Journal on Selected Areas in Communications (JSAC), special issue “on Peer-to-Peer Networks”, vol. 31, no. 9, pp. 348-358, Sep. 2013.
    M.-H. Han, B.-G. Kim, and J.-W. Lee, "Subchannel and transmission mode scheduling for D2D communication in OFDMA networks," in Proceedings of IEEE VTC-Fall, pp. 1–5, 2012.
    L. B. Le, "Fair resource allocation for device-to-device communications in wireless cellular networks," in Proceedings of IEEE GLOBECOM, pp. 5451–5456, 2012.
    Z. Liu, T. Peng, H. Chen, and W. Wang, "Optimal D2D user allocation over multi-bands under heterogeneous networks." in Proceedings of IEEE GLOBECOM, pp. 1339–1344, 2012.
    T. Han, R. Yin, Y. Xu, and G. Yu, "Uplink channel reusing selection optimization for device-to-device communication underlaying cellular networks," in Proceedings of IEEE PIMRC, pp. 559–564, 2012.
    X. Chen, L. Chen, M. Zeng, X. Zhang, and D. Yang, “Downlink resource allocation for device-to-device communication underlaying cellular networks,” in Proceedings of IEEE PIMRC, pp. 232–237, 2012.
    C. Xu, L. Song, Z. Han, D. Li, and B. Jiao, "Resource Allocation Using A Reverse Iterative Combinatorial Auction for Device-to-Device Underlay Cellular Networks," in Proc. IEEE Global Communications Conference (GLOBECOM), Dec. 2012.
    C. Xu, L. Song, Z. Han, Q. Zhao, X. Wang, and B. Jiao, "Interference-aware resource allocation for device-to-device communications as an underlay using sequential second price auction," in Proc. IEEE International Conference on Communications (ICC), pp. 445-449, June 2012.
    H. Wang and X. Chu, "Distance-constrained resource-sharing criteria for device-to-device communications underlaying cellular networks," Electronics Letters, vol. 48, no. 9, pp. 528-530, April 2012.
    G. Fodor, E. Dahlman, G. Mildh, S. Parkvall, N. Reider, G. Miklós, and Z. Turányi, "Design aspects of network assisted device-to-device communications," IEEE Communications Magazine, vol. 50, no. 3, pp. 170-177, March 2012.
    X. Zhu, S. Wen, G. Cao, X. Zhang, and D. Yang, "QoS-based resource allocation scheme for device-to-device (D2D) radio underlaying cellular networks," in Proceedings of 19th International Conference on Telecommunications, 2011.
    H. Chae, J. Gu, B. Choi, and M. Chung, "Radio resource allocation scheme for device-to-device communication in cellular networks using fractional frequency reuse," in Proc. Asia-Pacific Conference on Communications (APCC), pp. 58-62, Oct. 2011.
    C.-H. Yu, K. Doppler, C. B. Ribeiro, and O. Tirkkonen, "Resource Sharing Optimization for Device-to-Device Communication Underlaying Cellular Networks," IEEE Transactions on Wireless Communications, vol. 10, no. 8, pp. 2752-2763, August 2011.
    B. Wang, L. Chen, X. Chen, X. Zhang, and D. Yang, "Resource Allocation Optimization for Device-to-Device Communication Underlaying Cellular Networks," in Proc. IEEE Vehicular Technology Conference (VTC Spring), pp. 1-6, May 2011.
    M. Zulhasnine, C. Huang, and A. Srinivasan, "Efficient resource allocation for device-to-device communication underlaying LTE network," in Proc. IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), pp. 368-375, Oct. 2010.
    T. Chen, G. Charbit, S. Hakola, "Time Hopping for Device-To-Device Communication in LTE Cellular System," in Proc. IEEE Wireless Communications and Networking Conference (WCNC), pp.1-6, April 2010.
    P. Janis, V. Koivunen, C. Ribeiro, J. Korhonen, K. Doppler, and K. Hugl, "Interference-Aware Resource Allocation for Device-to-Device Radio Underlaying Cellular Networks," in Proc. IEEE Vehicular Technology Conference, VTC Spring 2009, pp. 1-5, April 2009.

      Cross-Layer Optimization
    1. Joint Subcarrier Control and Power Control
    2. Joint Power Control and Time-Domain Scheduling
    3. Energy Efficient Networks
      1. Energy Efficient Resource Allocation
      2. Battery Life-time Maximization by D2D Communications
    C. Xu, L. Song, D. Zhu, and M. Lei, "Subcarrier and Power Optimization for Device-to-Device Underlay Communication using Auction Games," in Proceedings of IEEE International Conference on Communications (ICC), Jun. 2014.
    B. Peng, C. Hu, T. Peng, Y. Yang, and W. Wang, "A resource allocation scheme for D2D multicast with QoS protection in OFDMA-based systems," in Proceeding of IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), pp. 2383-2387, Sept. 2013.
    Y. Cheng, Y. Gu, and X. Lin, "Combined power control and link selection in deviceto-device enabled cellular systems," IET Communications, vol. 7, no. 12, pp. 1221-1230, Aug. 2013.
    M. Belleschi, G. Fodor, and A. Abrardo, "Performance analysis of a distributed resource allocation scheme for D2D communications," inProceedings of IEEE GLOBECOM Workshops, pp. 358–362, 2011.
    D.Feng, L. Lu, Y.Wu, G. Y. Li, G. Feng, and S. Li, "Device-to-Device Communications Underlaying Cellular Networks," IEEE Transactions on Communications, vol. 61, no. 8, pp. 3541-3551, Aug. 2013.
    F. Wang, C. Xu, L. Song, Q. Zhao, X. Wang, and Z. Han,"Energy-Aware Resource Allocation for Device-to-Device Underlay Communication," in Proc. IEEE International Conference on Communications (ICC), June 2013.
    P. Cheng, L. Deng, H. Yu, Y. Xu, and H. Wang, "Resource allocation for cognitive networks with D2D communication: An evolutionaryapproach," in Proceedings of IEEE WCNC, pp. 2671–2676, 2012.
    F. Wang, C. Xu, L. Song, Z. Han, and B. Zhang, "Energy-Efficient Radio Resource and Power Allocation for Device-to-Device Communication Underlaying Cellular Networks," in Proc. IEEE Interference Conference on Wireless Communications and Signal Processing (WCSP), Oct. 2012.
      Security for D2D Communications
    1. Information Theoretic Fundamentals
    2. Cyber Security for D2D
    3. Signal Processing Techniques
    4. Game Theory for Secure D2D Communication
    5. Physical Layer Security in Relaying Networks
    H. Zhang, T. Wang, L. Song, and Z. Han, "Radio Resource Allocation for Physical-Layer Security in D2D Underlay Communications," in Proceeding of IEEE International Conference on Communications (ICC), Jun. 2014.
    J. Yue, C. Ma, H. Yu, and W. Zhou, "Secrecy-Based Access Control for Device-to-Device Communication Underlaying Cellular Networks," IEEE Communications Letters, vol. 17, no. 11, pp. 2068-2071, Nov. 2013.
    J. Du, W. Zhu, J. Xu, Z. Li, and H. Wang, “A compressed HARQ feedback for device-to-device multicast communications,” in Proceedings ofIEEE VTC-Fall, pp. 1–5, 2012.
Applications of D2D Communications
      Proximity Services
    1. Proximity Discovery over E-URA
    2. Proximity Communication over E-URA
    3. EPC Support of Proximity Communication over WLAN
    4. Public Safety Services
    S. Chao, H. Lee, C. Chou, and H. Wei, "Bio-Inspired Proximity Discovery and Synchronization for D2D Communications," IEEE Communications Letters, vol. 17, no. 12, pp. 2300-2303, Dec. 2013.
    Y. Peng, Q. Gao, S. Sun, and Y. Zheng, "Discovery of device-device proximity: Physical layer design for D2D discovery," in Proceeding of IEEE/CIC International Conference on Communications in China - Workshops (CIC/ICCC), pp. 176-181, 2013.
      Capacity Offloading Through D2D Local Area Networks
    1. Standard Scenarios Introduction
    2. Capacity Offloading by Coalition Game in Cellular Networks
    3. Capacity Offloading and Information Spreading by Bit Torrent Protocol
    M. J. Yang, S. Y. Lim, H. J. Park, and N. H. Park, "Solving the data overload: Device-to-device bearer control architecture for cellular data offloading," IEEE Vehicular Technology Magazine, vol. 8, no. 1, pp. 31-39, 2013.
      Vehicular Ad-Hoc Networks
    1. Introduction of Heterogeneous Vehicular Ad-Hoc Networks
    2. Mobility Model
    3. Popular Content Distribution in VANET
    4. Cooperative Emergency Information Spreading in VANET
    5. Cognitive Enabled Heterogeneous Vehicular Ad-Hoc Networks
    6. 802.11P and OFDMA-Based Simulator
    T. Wang, L. Song, and Z. Han, "Coalitional Graph Gamesfor Popular Content Distribution in Cognitive Radio VANETs," IEEETransactions on Vehicular Technologies, special issue "on Graph Theoryand Its Application in Vehicular Networking", vol. 62, no. 8, pp. 4010-4019, Oct. 2013.
    T. Wang, L. Song, Z. Han, and B. Jiao, "Dynamic Popular Content Distribution in Vehicular Networks using Coalition Formation Games," IEEE Journal on Selected Areas in Communications, vol. 31, no. 9, pp. 538-547, Sept. 2013.
      Mobile Social Networks
    1. Introduction to Mobile Social Networks
    2. Architecture of Mobile Social Networks
    3. Community Detection Algorithms
    4. Content Distribution Mechanisms
    5. Context-Aware Data Transfer
    6. Mobility Modeling
    N. Golrezaei, A. F. Molisch, and A. G. Dimakis, “Base-station assisted device-to-device communications for high-throughput wireless videonetworks,” in Proceedings of IEEE ICC, pp. 7077–7081, Jun. 2012.
    N. Golrezaei, A. G. Dimakis, and A. F. Molisch, “Device-to-device collaboration through distributed storage,” in Proceedings of IEEE GLOBECOM, pp. 2397–2402, Dec. 2012.
    J. Li, J. B. Song, and Z. Han, "Network Connectivity Optimization for Device-to-Device Wireless System With Femtocells," IEEE Transactions on Vehicular Technology, vol. 62, no. 7, pp. 3098-3109, Sept. 2013.
    Yanru Zhang, Lingyang Song, Walid Saad, Zaher Dawy, and Zhu Han, “Exploring Social Ties for Enhanced Device-to-Device Communications in Wireless Networks,” IEEE Globe Communication Conference (Globecom), Atlanta, USA, Dec. 2013.
    Boya Di, Tianyu Wang, Lingyang Song, and Zhu Han, “Incentive Mechanism for Collaborative Smartphone Sensing using Overlapping Coalition Formation Games,” IEEE Globe Communication Conference (Globecom), Atlanta, USA, Dec. 2013.
Standardization of D2D Communications
      Operator-Controlled D2Dover LTE/LTE-Advanced
    1. Introduction to LTE and LTE-Advanced Networks
    2. Requirements and Working Assumptions in 3GPP
      1. Proximity-based Services (ProSe)
    3. Network Based D2D Protocol Design
    4. Performance Evaluation
      1. Link-Level and System Level Simulator
      2. Performance Evaluation
    Feasibility Study on Proximity-based Services (ProSe), 3GPP TR 22.803 v12.2.0, 2013.
    Study on architecture enhancements to support Proximity-based Services (ProSe), 3GPP TR 23.703 v0.7.1, 2013