# US 9,882,698 B2 · Device and method of handling resource for device-to-device communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,882,698 B2 - Document ID: US9882698B2 - Status: Granted - Kind: B2 - Application number: 14/816,084 - Filed: 2015-08-03 - Published: 2016-02-04 - Granted: 2018-01-30 - Earliest claimed: 2014-08-04 - Assignees: HTC Corporation - Applicants: HTC Corporation - Inventors: Ling-San Meng - Web page: https://patentgrep.com/patent/US9882698B2 ## CPC - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0092: {Indication of how the channel is divided} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/14: Direct-mode setup - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A network for handling resources for a device-to-device (D2D) communication in a time-division duplexing (TDD) system comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise selecting a reference configuration for at least one downlink (DL) transmission of a communication device from a plurality of configuration candidates; determining at least one uplink (UL) subframe for the D2D communication of the communication device according to the reference configuration; transmitting information of the reference configuration to the communication device; transmitting information of the at least one UL subframe to the communication device; and performing the at least one DL transmission with the communication device according to the reference configuration. ## Claims ### Claim 1 A network for handling resources for a device-to-device (D2D) communication in a time-division duplexing (TDD) system, comprising: a storage unit for storing instructions of: selecting a reference configuration for at least one downlink (DL) transmission of a communication device from a plurality of configuration candidates; determining at least one uplink (UL) subframe for the D2D communication of the communication device according to the reference configuration; transmitting information of the reference configuration to the communication device; transmitting information of the at least one UL subframe to the communication device; and performing the at least one DL transmission with the communication device according to the reference configuration; and a processing means, coupled to the storage unit, configured to execute the instructions stored in the storage unit. ### Claim 2 (depends on 1) The network of claim 1, wherein the at least one UL subframe is determined based on that at least one direction of the at least one UL subframe is not UL according to the reference configuration. ### Claim 3 (depends on 1) The network of claim 1, wherein the reference configuration is selected according to at least one of a DL traffic condition of the communication device, an interference level, a cell loading of the network and a D2D resource requested by the communication device. ### Claim 4 (depends on 1) The network of claim 1, wherein the reference configuration is selected semi-statically or statically. ### Claim 5 (depends on 1) The network of claim 1, wherein the selection of the reference configuration is predetermined in the 3rd Generation Partnership Project (3GPP) standard. ### Claim 6 (depends on 1) The network of claim 1, wherein the information of the reference configuration is transmitted via a higher layer signaling or a physical layer signaling, or the information of the at least one UL subframe is transmitted via a higher layer signaling or a physical layer signaling. ### Claim 7 (depends on 1) The network of claim 1, wherein a physical layer signaling is scrambled with a corresponding Cell Radio Network Temporary Identifier (RNTI), when the information of the reference configuration or the information of the at least one UL subframe is transmitted via the physical layer signaling. ### Claim 8 (depends on 1) The network of claim 1, wherein the information of the reference configuration or the information of the at least one UL subframe is transmitted via a physical layer signaling, and the physical layer signaling is allocated in a corresponding communication device-specific search space. ### Claim 9 (depends on 1) The network of claim 1, wherein a UL/DL configuration of the communication device and the reference configuration are different. ### Claim 10 (depends on 1) The network of claim 1, wherein the plurality of configuration candidates are determined according to Enhanced Interference Mitigation and Traffic Adaptation (eIMTA). ### Claim 11 A network for handling resources for a device-to-device (D2D) communication in a time-division duplexing (TDD) system, comprising: a storage unit for storing instructions of: determining at least one uplink (UL) subframe for the D2D communication of a communication device; selecting a reference configuration for at least one downlink (DL) transmission of the communication device from a plurality of configuration candidates according to the at least one UL subframe; transmitting information of the reference configuration to the communication device; transmitting information of the at least one UL subframe to the communication device; and performing the at least one DL transmission with the communication device according to the reference configuration; and a processing means, coupled to the storage unit, configured to execute the instructions stored in the storage unit. ### Claim 12 (depends on 11) The network of claim 11, wherein the reference configuration is selected based on that at least one direction of the at least one UL subframe is not UL according to the reference configuration. ### Claim 13 (depends on 11) The network of claim 11, wherein the reference configuration is selected according to the at least one UL subframe and at least one of a DL traffic condition of the communication device, an interference level, a cell loading of the network and a D2D resource requested by the communication device. ### Claim 14 (depends on 11) The network of claim 11, wherein the reference configuration is selected semi-statically or statically. ### Claim 15 (depends on 11) The network of claim 11, wherein the selection of the reference configuration is predetermined in the 3rd Generation Partnership Project (3GPP) standard. ### Claim 16 (depends on 11) The network of claim 11, wherein the information of the reference configuration is transmitted via a higher layer signaling or a physical layer signaling, or the information of the at least one UL subframe is transmitted via a higher layer signaling or a physical layer signaling. ### Claim 17 (depends on 11) The network of claim 11, wherein a physical layer signaling is scrambled with a corresponding Cell Radio Network Temporary Identifier (RNTI), when the information of the reference configuration or the information of the at least one UL subframe is transmitted via the physical layer signaling. ### Claim 18 (depends on 11) The network of claim 11, wherein the information of the reference configuration or the information of the at least one UL subframe is transmitted via a physical layer signaling, and the physical layer signaling is allocated in a corresponding communication device-specific search space. ### Claim 19 (depends on 11) The network of claim 11, wherein a UL/DL configuration of the communication device and the reference configuration are different. ### Claim 20 (depends on 11) The network of claim 11, wherein the plurality of configuration candidates are determined according to Enhanced Interference Mitigation and Traffic Adaptation (eIMTA).