Message mapping via frequency and/or time indexing
AssigneeApple Inc.
InventorsYang Li, Li Su, Zhu Ji, Tianyan Pu
Life of this patent
Estimating the term…
Abstract
This disclosure relates to techniques for supporting message mapping via time and/or frequency indexing. For example, these techniques may be applied to device-to-device wireless communication. For example, device to device discovery may use message mapping via frequency indexing. A portion of the payload of a message, such as a discovery message, may be offloaded to a frequency and/or time index. A receiving device may determine the offloaded portion of the payload based on the frequency and/or time (e.g., subcarrier and/or slot) used to transmit the message.
Claims20
An apparatus, comprising:
- a processor configured to cause a first wireless device to:
- subdivide an identifier into a first portion of the identifier and a second portion of the identifier;
- transmit a synchronization preamble, including the first portion of the identifier, to a second wireless device;
- generate a payload, including a non-offloaded part of the second portion of the identifier;
- select, based on an offloaded part of the second portion of the identifier, a resource from a plurality of available resources, wherein the resource comprises an implicit indication of the offloaded part of the second portion of the identifier;
- and
- transmit the payload on the resource to the second wireless device, wherein the payload and the implicit indication of the offloaded part of the second portion of the identifier are useable to determine the second portion of identifier.
An apparatus, comprising:
- a processor configured to cause a second wireless device to:
- receive a synchronization preamble, including a first portion of an identifier, from a first wireless device;
- determine at least one resource to monitor during a subsequent time window, wherein the at least one resource is selected from a plurality of available resources;
- receive a message on a first resource of the at least one resource during the subsequent time window, wherein the message includes a non-offloaded part of a second portion of the identifier;
- determine an offloaded part of the second portion of the identifier based at least in part on an identity of the first resource, wherein the offloaded part of the second portion of the identifier is not explicitly included in the message;
- and
- determine a complete identifier, wherein the complete identifier includes the non-offloaded part of the second portion of the identifier and the offloaded part of the second portion of the identifier.
A user equipment device (UE) comprising:
- a radio;
- and
- a processor operably coupled to the radio and configured to cause the UE to:
- subdivide an identifier into a first portion of the identifier and a second portion of the identifier;
- transmit a synchronization preamble, including the first portion of the identifier, to a second UE;
- generate a payload, including a non-offloaded part of the second portion of the identifier;
- select, based on an offloaded part of the second portion of the identifier, a resource from a plurality of available resources, wherein the resource comprises an implicit indication of the offloaded part of the second portion of the identifier;
- and
- transmit the payload on the resource to the second UE, wherein the payload and the implicit indication of the offloaded part of the second portion of the identifier are useable to determine the second portion of identifier.
Dependencies are inferred from the claim text.