Geo-information reporting for vehicle-to-vehicle sidelink communications
Methods, systems, and storage media for reporting geo-information in wireless communications networks are described. In embodiments, an evolved nodeB (eNB) may configure a user equipment (UE) to report its geo-information, and use the reported geo-information for scheduling vehicle-to-vehicle (V2V) communications. The eNB may also allocate radio frequency (RF) resources for V2V communications based on reported geo-information. In embodiments, a UE may report its geo-information based on a configuration message received from an eNB, receive scheduling information for V2V communications, and determine or select RF resources on which to transmit or receive V2V communications. Other embodiments may be described and/or claimed.
1. One or more non-transitory computer-readable media including program code, which when executed by one or more processors, causes an Evolved Node B (“eNB”) to:
generate and encode a first message, wherein the first message includes an instruction to instruct a user equipment (“UE”) to generate and transmit a report and the first message is to indicate a trigger to initiate transmission of the report;
obtain and decode a second message to obtain the report, wherein the report is to include geo-information associated with the UE;
generate, according to a semi-persistent scheduling algorithm, a schedule of one or more vehicle-to-vehicle (“V2V”) sidelink transmissions for the UE, wherein the schedule is based on radio frequency (“RF”) resources allocated to a geographical sub-area (“GSA”) associated with the geo-information from the obtained report, and wherein the schedule includes a transmission interval comprising one or more sidelink resource pools (“SRPs”) of a plurality of SRPs;
generate and encode a third message, wherein the third message is to indicate the allocation of the RF resources and a window to monitor for Downlink Control Information (“DCI”) format 5 transmissions;
generate and encode a DCI format 5 message to be transmitted to the UE, wherein the DCI format 5 message is to indicate the transmission interval;
generate and encode a fourth message that includes: a sidelink overload indicator (“SLOI”) to indicate a level of interference experienced by the eNB on one or more physical resource blocks of a plurality of subframes or a sidelink high interference indicator (“SLHII”) to indicate an occurrence of high interference sensitivity experienced by the eNB on the one or more physical resource blocks of the plurality of subframes;
control transmission of the first message, the third message, the fourth message, and the DCI format 5 message;
obtain and decode a fifth message to obtain a value of another SLHII, a value of another SLOI, and a SRP identifier (“SRPID”) or a GSA identifier (“GSAID”) associated with the other SLHII and the other SLOI; and
update the schedule of the one or more V2V sidelink transmissions based on the value of the other SLHII, and the value of the other SLOI.
2. The one or more non-transitory computer-readable media of claim 1 , wherein individual SRPs of the plurality of SRPs include a plurality of subframes, wherein the plurality of subframes includes a physical sidelink control channel (“PSCCH”) subframe and a set of physical sidelink shared channel (“PSSCH”) subframes, and
wherein the transmission interval is to begin at a PSCCH subframe nearest in time to transmission of the DCI format 5 message, or begin at a predefined PSCCH subframe indicated by the DCI format 5 message, and
wherein the transmission interval is to span a predefined number of PSSCH subframes, or span a predefined period of time.
3. The one or more non-transitory computer-readable media of claim 1 , wherein the fourth message further includes SRPID or a GSAID associated with the SLHII or the SLOI.
4. The one or more non-transitory computer-readable media of claim 1 , wherein the fourth message and the fifth message are X2 application protocol (“X2AP”) messages, and wherein the fifth message is one of a Load Information message or a sidelink load indicator message.
5. The one or more non-transitory computer-readable media of claim 1 , wherein,
the first message is an radio resource control (“RRC”) Connection Reconfiguration message including a measurement configuration (“MeasConfig”) information element (IE), wherein the MeasConfig IE includes the instruction and the trigger, and
the second message is a Medium Access control (“MAC”) control element (“CE”) message to be signaled using layer 2 (“L2”) signaling, or the second message is a RRC message to be signaled using layer 3 (“L3”) signaling.
6. One or more non-transitory computer-readable media including program code, which when executed by one or more processors, causes an Evolved Node B (“eNB”) to:
generate and encode a first message, wherein the first message includes an instruction to instruct a user equipment (“UE”) to generate and transmit a report and the first message is to indicate a trigger to initiate transmission of the report;
obtain and decode a second message to obtain the report, wherein the report is to include geo-information associated with the UE;
generate, according to a semi-persistent scheduling algorithm, a schedule of one or more vehicle-to-vehicle (“V2V”) sidelink transmissions for the UE, wherein the schedule is based on radio frequency (“RF”) resources allocated to a geographical sub-area (“GSA”) associated with the geo-information from the obtained report, and wherein the schedule includes a transmission interval comprising one or more sidelink resource pools (“SRPs”) of a plurality of SRPs;
generate and encode a third message, wherein the third message is to indicate the allocation of the RF resources and a window to monitor for Downlink Control Information (“DCI”) format 5 transmissions;
generate and encode a DCI format 5 message to be transmitted to the UE, wherein the DCI format 5 message is to indicate the transmission interval;
generate and encode a fourth message that includes: a sidelink overload indicator (“SLOI”) to indicate a level of interference experienced by the eNB on one or more physical resource blocks of a plurality of subframes or a sidelink high interference indicator (“SLHII”) to indicate an occurrence of high interference sensitivity experienced by the eNB on the one or more physical resource blocks of the plurality of subframes, wherein the fourth message further includes an SRP identifier (“SRPID”) or a GSA identifier (“GSAID”) associated with the SLHII or the SLOI; and
control transmission of the first message, the third message, the fourth message, and the DCI format 5 message.
7. The one or more non-transitory computer-readable media of claim 6 , wherein individual SRPs of the plurality of SRPs include a plurality of subframes, wherein the plurality of subframes includes a physical sidelink control channel (“PSCCH”) subframe and a set of physical sidelink shared channel (“PSSCH”) subframes, and
wherein the transmission interval is to begin at a PSCCH subframe nearest in time to transmission of the DCI format 5 message, or begin at a predefined PSCCH subframe indicated by the DCI format 5 message, and
wherein the transmission interval is to span a predefined number of PSSCH subframes, or span a predefined period of time.
8. The one or more non-transitory computer-readable media of claim 6 , wherein,
the first message is an RRC Connection Reconfiguration message including a measurement configuration (“MeasConfig”) IE, wherein the MeasConfig 1 E includes the instruction and the trigger, and
the second message is a Medium Access control (“MAC”) control element (“CE”) message to be signaled using layer 2 (“L2”) signaling, or the second message is a Radio Resource Control (“RRC”) message to be signaled using layer 3 (“L3”) signaling.