# US 9,883,488 B2 · Coexistence of priority broadcast and unicast in peer-to-peer networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,883,488 B2 - Document ID: US9883488B2 - Status: Granted - Kind: B2 - Application number: 14/954,494 - Filed: 2015-11-30 - Published: 2017-06-01 - Granted: 2018-01-30 - Earliest claimed: 2011-07-07 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Ying Wang; Sundar Subramanian; Xinzhou Wu; Junyi Li; Thomas Richardson - Web page: https://patentgrep.com/patent/US9883488B2 ## CPC - H04W 72/04: Wireless resource allocation - 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 67/104: Peer-to-peer [P2P] networks - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0057: {Physical resource allocation for CQI} - H04W 72/52: based on load - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method, a computer program product, and an apparatus are provided. In one configuration, the apparatus transmits a first broadcast signal including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus transmits a second broadcast signal in the unicast resource. In another configuration, the apparatus, which is a first wireless device, receives a first broadcast signal from a second wireless device including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus receives a first scheduling signal from the second wireless device in a scheduling resource. The first scheduling signal is for indicating a second intention to use the unicast resource for transmitting a second broadcast signal. Furthermore, the apparatus refrains from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal. ## Claims ### Claim 1 A method of a first wireless device, comprising: receiving a first broadcast signal from a second wireless device comprising information indicating an intention to use a unicast resource for a broadcast, wherein the unicast resource is designated for unicast transmissions; receiving a first scheduling signal from the second wireless device in a scheduling resource, the first scheduling signal for indicating a second intention to use the unicast resource for transmitting a second broadcast signal; and refraining from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal. ### Claim 2 (depends on 1) The method of claim 1, wherein the refraining is based on a probability and the probability is based on at least one of a distance to the second wireless device or a density of wireless devices within the vicinity of the first wireless device. ### Claim 3 (depends on 2) The method of claim 2, further comprising adjusting said probability based on the distance to the second wireless device, wherein the refraining comprises refraining from transmitting the second scheduling signal with said probability. ### Claim 4 (depends on 2) The method of claim 2, further comprising adjusting said probability based on the density of wireless devices within the vicinity of the first wireless device, wherein the refraining comprises refraining from transmitting the second scheduling signal with said probability. ### Claim 5 (depends on 1) The method of claim 1, further comprising receiving the second broadcast signal in the unicast resource. ### Claim 6 (depends on 1) The method of claim 1, wherein the first broadcast signal further comprises a broadcast message. ### Claim 7 (depends on 1) The method of claim 1, wherein said information indicating the intention to use the unicast resource for the broadcast comprises information indicating the unicast resource that will be used for the broadcast. ### Claim 8 (depends on 7) The method of claim 7, wherein the unicast resource comprises a plurality of unicast resources. ### Claim 9 An apparatus for wireless communication, comprising: means for receiving a first broadcast signal from a second apparatus comprising information indicating an intention to use a unicast resource for a broadcast, wherein the unicast resource is designated for unicast transmissions; means for receiving a first scheduling signal from the second apparatus in a scheduling resource, the first scheduling signal for indicating a second intention to use the unicast resource for transmitting a second broadcast signal; and means for refraining from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the means for refraining is based on a probability and the probability is based on at least one of a distance to the second apparatus or a density of wireless devices within the vicinity of the apparatus. ### Claim 11 (depends on 10) The apparatus of claim 10, further comprising means for adjusting said probability based on the distance to the second apparatus, wherein the means for refraining refrains from transmitting the second scheduling signal with said probability. ### Claim 12 (depends on 10) The apparatus of claim 10, further comprising means for adjusting said probability based on the density of wireless devices within the vicinity of the apparatus, wherein the means for refraining refrains from transmitting the second scheduling signal with said probability. ### Claim 13 (depends on 9) The apparatus of claim 9, further comprising means for receiving the second broadcast signal in the unicast resource. ### Claim 14 (depends on 9) The apparatus of claim 9, wherein the first broadcast signal further comprises a broadcast message. ### Claim 15 (depends on 9) The apparatus of claim 9, wherein said information indicating the intention to use the unicast resource for the broadcast comprises information indicating the unicast resource that will be used for the broadcast. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the unicast resource comprises a plurality of unicast resources. ### Claim 17 An apparatus for wireless communication, comprising: a processing system configured to: receive a first broadcast signal from a second apparatus comprising information indicating an intention to use a unicast resource for a broadcast, wherein the unicast resource is designated for unicast transmissions; receive a first scheduling signal from the second apparatus in a scheduling resource, the first scheduling signal for indicating a second intention to use the unicast resource for transmitting a second broadcast signal; and refrain from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the processing system is configured to refrain based on a probability and the probability is based on at least one of a distance to the second apparatus or a density of wireless devices within the vicinity of the apparatus. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the processing system is further configured to adjust said probability based on the distance to the second apparatus, wherein the processing system is configured to refrain from transmitting the second scheduling signal with said probability. ### Claim 20 (depends on 18) The apparatus of claim 18, wherein the processing system is configured to adjust said probability based on the density of wireless devices within the vicinity of the apparatus, wherein the processing system is configured to refrain from transmitting the second scheduling signal with said probability. ### Claim 21 (depends on 17) The apparatus of claim 17, wherein the processing system is further configured to receive the second broadcast signal in the unicast resource. ### Claim 22 (depends on 17) The apparatus of claim 17, wherein the first broadcast signal further comprises a broadcast message. ### Claim 23 (depends on 17) The apparatus of claim 17, wherein said information indicating the intention to use the unicast resource for the broadcast comprises information indicating the unicast resource that will be used for the broadcast. ### Claim 24 (depends on 23) The apparatus of claim 23, wherein the unicast resource comprises a plurality of unicast resources. ### Claim 25 A computer program product in a first wireless device, comprising: a non-transitory computer-readable medium comprising code for: receiving a first broadcast signal from a second wireless device comprising information indicating an intention to use a unicast resource for a broadcast, wherein the unicast resource is designated for unicast transmissions; receiving a first scheduling signal from the second wireless device in a scheduling resource, the first scheduling signal for indicating a second intention to use the unicast resource for transmitting a second broadcast signal; and refraining from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal.