Transmission with collision detection and mitigation for wireless communication

摘要

Techniques for transmitting signals on shared resources in a manner to detect and/or combat collision are described. In an aspect, a terminal may transmit a signal on a subset of resource elements in a resource block, and at least one null resource element with no signal may be used to detect for collision of the signal. In another aspect, different terminals may simultaneously transmit their signals on different subsets of resource elements in a resource block. These different subsets of resource elements may be pseudo-randomly selected to randomize interference. In one design, a terminal may determine a resource block to use for transmission of a signal, select a subset of the resource elements in the resource block, and transmit the signal on the selected resource elements, e.g., to at least one other terminal for peer-to-peer communication. The signal may be a peer discovery signal, a paging signal, etc.

主权项

1. A method for wireless communication, comprising:
determining a resource block to use for transmission of a signal by a terminal, the resource block comprising multiple resource elements, each resource element being a time and frequency unit; selecting a subset of the multiple resource elements in the resource block; transmitting the signal on the selected subset of resource elements in the resource block, wherein the signal is transmitted from the terminal to at least one other terminal for peer-to-peer communication; and transmitting no signal on at least one null resource element in the resource block, the at least one null resource element being omitted from the selected subset of resource elements and used for detecting collision of the signal.