# US 2021/0242992 A1 · D2d communication control method and control apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242992 A1 - Document ID: US20210242992A1 - Status: Published application - Kind: A1 - Application number: 17/233,705 - Filed: 2021-04-19 - Published: 2021-08-05 - Earliest claimed: 2015-05-29 - Assignees: Beijing Zhigu Rui Tuo Tech Co., Ltd - Applicants: Beijing Zhigu Rui Tuo Tech Co., Ltd - Inventors: Na Wei; Weicai Huang - Web page: https://patentgrep.com/patent/US20210242992A1 ## CPC - 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 5/0023: {Time-frequency-space} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/0032: {Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation} - H04L 5/0069: {Allocation based on distance or geographical location} - H04W 16/28: using beam steering - H04W 72/51: based on terminal or device properties - H04W 76/14: Direct-mode setup - 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 Device to device (D2D) communication control is provided. A method comprises: allocating a pilot channel resource for at least one directional pilot signal associated with directional D2D communication; and sending information associated with the pilot channel resource. A respective pilot channel resource for a direction pilot signal can be allocated for each direction D2D communication, thereby providing a basis for better control of the D2D communication. ## Claims ### Claim 1 A method, comprising: receiving, by a system comprising a processor, first information associated with a pilot channel resource for at least one directional pilot signal associated with a directional device to device (D2D) communication; and sending the at least one directional pilot signal at least according to the first information. ### Claim 2 (depends on 1) The method of claim 1, further comprising: sending request information associated with establishing a communication link of the directional D2D communication. ### Claim 3 (depends on 2) The method of claim 2, wherein the request information comprises: second information associated with a directional transmission capability of at least one party in both parties of a communication. ### Claim 4 (depends on 2) The method of claim 2, wherein the request information comprises: second information associated with using directional transmission over the communication link. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving a query associated with a directional transmission capability of at least one party in both parties of a communication using a communication link of the directional D2D communication. ### Claim 6 (depends on 5) The method of claim 5, further comprising: sending second information associated with the directional transmission capability of the at least one party. ### Claim 7 (depends on 6) The method of claim 6, wherein the second information comprises at least one: a first indication that a sender device of the at least one party will use directional transmission over the communication link, a directional coefficient of the directional transmission, or a second indication that the sender device uses beam forming over the communication link. ### Claim 8 An apparatus, comprising: a memory that stores executable modules; and a processor, coupled to the memory, that executes or facilitates execution of the executable modules, the executable modules comprising: a first reception module configured to receive resource information associated with a pilot channel resource for a directional pilot signal associated with a directional device to device (D2D) communication; and a second sending module configured to send the directional pilot signal at least according to the resource information. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the executable modules further comprise: a third sending module configured to send request information associated with establishing a communication link of the directional D2D communication. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the request information comprises: second information associated with a directional transmission capability of at least one party in both parties of a communication. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the request information comprises: second information associated with using directional transmission over the communication link. ### Claim 12 (depends on 8) The apparatus of claim 8, wherein the executable modules further comprise: a third reception module configured to receive a query associated with a directional transmission capability of a party of both parties to a communication using a communication link of the directional D2D communication. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the executable modules further comprise: a fourth sending module configured to send capability information associated with the directional transmission capability of the party. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein the capability information associated with the directional transmission capability comprises at least one: a first indication that a sender device of the party will use directional transmission over the communication link, a directional coefficient of the directional transmission, or a second indication that the sender device uses beam forming over the communication link. ### Claim 15 A non-transitory computer readable medium, comprising at least one executable instruction, which, in response to execution, causes a system comprising a processor to perform operations, comprising: receiving information associated with a pilot channel resource for a directional pilot signal associated with a directional device to device (D2D) communication; and sending the directional pilot signal at least according to the information. ### Claim 16 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the operations further comprise: sending request information associated with establishing a communication link of the directional D2D communication. ### Claim 17 (depends on 16) The non-transitory computer readable medium of claim 16, wherein the request information comprises: second information associated with a directional transmission capability of at least one party in both parties of a communication. ### Claim 18 (depends on 16) The non-transitory computer readable medium of claim 16, wherein the request information comprises: second information associated with using directional transmission over the communication link. ### Claim 19 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the operations further comprise: receiving a query associated with a directional transmission capability of at least one party in both parties of a communication using a communication link of the directional D2D communication; and sending second information associated with the directional transmission capability of the at least one party. ### Claim 20 (depends on 19) The non-transitory computer readable medium of claim 19, wherein the second information comprises at least one: a first indication that a sender device of the at least one party will use directional transmission over the communication link, a directional coefficient of the directional transmission, or a second indication that the sender device uses beam forming over the communication link.