# US 2013/0281101 A1 · Time shifting of co-channel data transmissions to reduce co-channel interference > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0281101 A1 - Document ID: US20130281101A1 - Status: Published application - Kind: A1 - Application number: 13/909,254 - Filed: 2013-06-04 - Published: 2013-10-24 - Earliest claimed: 2009-05-11 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Zhi-Zhong YU; Mungal Singh Dhanda - Web page: https://patentgrep.com/patent/US20130281101A1 ## CPC - H04W 72/541: using the level of interference - H04W 52/325: {Power control of control or pilot channels} - H04L 25/03012: {operating in the time domain (H04L25/03165, H04L25/03178 take precedence)} - H04L 2025/03426: {transmission using multiple-input and multiple-output channels} - H04W 52/16: Deriving transmission power values from another channel - H04W 72/0446: Resources in time domain, e.g. slots or frames - 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 cellular communications system in which transmission of control signals for plural different remote stations is so displaced in time that the transmission of control signals for one remote station does not interfere with the transmission of control signals for another remote station, the displacement being sufficient to prevent contemporaneous reception of control signals by the remote station intended for the other remote station. Other aspects, embodiments, and features are also claimed and described. ## Claims ### Claim 1 A method for determining capabilities of a remote terminal by a base station, the method comprising: maintaining an active voice call with the remote terminal; sending a single discovery burst to the remote terminal; receiving a response from the remote terminal; and determining whether the remote terminal is capable of multi-user on one slot operation based on the response. ### Claim 2 (depends on 1) The method of claim 1, wherein the single discovery burst is sent in place of a slow associated control channel frame. ### Claim 3 (depends on 1) The method of claim 1, wherein a known interference pattern is superimposed on the single discovery burst. ### Claim 4 (depends on 1) The method of claim 1, wherein the single discovery burst comprises a first signal and a second signal on a single channel, wherein the first signal comprises traffic data for the remote terminal, wherein the traffic data comprises a first predefined data sequence, wherein the second signal comprises a co-channel signal, and wherein the co-channel signal comprises a second predefined data sequence. ### Claim 5 (depends on 1) The method of claim 1, wherein the response indicates a bit error probability measured by the remote terminal. ### Claim 6 (depends on 1) The method of claim 1, wherein the response indicates an RxQual parameter for one slow associated control channel period. ### Claim 7 (depends on 1) The method of claim 1, wherein the response indicates an RxLev parameter indicating average signal strength received. ### Claim 8 (depends on 1) The method of claim 1, wherein the single discovery burst is sent during a first time interval, and wherein no discovery burst is sent during a second time interval immediately following the first time interval. ### Claim 9 (depends on 1) The method of claim 1, wherein the single discovery burst is sent during a first time interval, and wherein multiple discovery bursts are sent during a second time interval following the first time interval. ### Claim 10 (depends on 1) The method of claim 1, further comprising selecting the remote terminal for co-channel operation if the remote terminal is capable of multi-user on one slot operation. ### Claim 11 An apparatus for determining capabilities of a remote terminal by a base station, comprising: a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to: maintain an active voice call with the remote terminal; send a single discovery burst to the remote terminal; receive a response from the remote terminal; and determine whether the remote terminal is capable of multi-user on one slot operation based on the response. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the single discovery burst is sent in place of a slow associated control channel frame. ### Claim 13 (depends on 11) The apparatus of claim 11, wherein a known interference pattern is superimposed on the single discovery burst. ### Claim 14 (depends on 11) The apparatus of claim 11, wherein the single discovery burst comprises a first signal and a second signal on a single channel, wherein the first signal comprises traffic data for the remote terminal, wherein the traffic data comprises a first predefined data sequence, wherein the second signal comprises a co-channel signal, and wherein the co-channel signal comprises a second predefined data sequence. ### Claim 15 (depends on 11) The apparatus of claim 11, wherein the response indicates a bit error probability measured by the remote terminal. ### Claim 16 (depends on 11) The apparatus of claim 11, wherein the response indicates an RxQual parameter for one slow associated control channel period. ### Claim 17 (depends on 11) The apparatus of claim 11, wherein the response indicates an RxLev parameter indicating average signal strength received. ### Claim 18 (depends on 11) The apparatus of claim 11, wherein the single discovery burst is sent during a first time interval, and wherein no discovery burst is sent during a second time interval immediately following the first time interval. ### Claim 19 (depends on 11) The apparatus of claim 11, wherein the single discovery burst is sent during a first time interval, and wherein multiple discovery bursts are sent during a second time interval following the first time interval. ### Claim 20 A computer-program product for wireless communications, the computer-program product comprising a non-transitory computer-readable medium having instructions thereon, the instructions comprising: code for causing a base station to maintain an active voice call with a remote terminal; code for causing the base station to send a single discovery burst to the remote terminal; code for causing the base station to receive a response from the remote terminal; and code for causing the base station to determine whether the remote terminal is capable of multi-user on one slot operation based on the response. ### Claim 21 (depends on 20) The computer-program product of claim 20, wherein the single discovery burst is sent in place of a slow associated control channel frame. ### Claim 22 (depends on 20) The computer-program product of claim 20, wherein a known interference pattern is superimposed on the single discovery burst. ### Claim 23 (depends on 20) The computer-program product of claim 20, wherein the single discovery burst comprises a first signal and a second signal on a single channel, wherein the first signal comprises traffic data for the remote terminal, wherein the traffic data comprises a first predefined data sequence, wherein the second signal comprises a co-channel signal, and wherein the co-channel signal comprises a second predefined data sequence. ### Claim 24 A method for providing capabilities of a remote terminal to a base station, the method comprising: maintaining an active voice call with the base station; receiving a single discovery burst from the base station; and sending a response to the base station, wherein the response indicates whether the remote terminal is capable of multi-user on one slot operation. ### Claim 25 (depends on 24) The method of claim 24, wherein the single discovery burst is received in place of a slow associated control channel frame. ### Claim 26 (depends on 24) The method of claim 24, wherein a known interference pattern is superimposed on the single discovery burst. ### Claim 27 (depends on 24) The method of claim 24, wherein the single discovery burst comprises a first signal and a second signal on a single channel, wherein the first signal comprises traffic data for the remote terminal, wherein the traffic data comprises a first predefined data sequence, wherein the second signal comprises a co-channel signal, and wherein the co-channel signal comprises a second predefined data sequence. ### Claim 28 An apparatus for providing capabilities of a remote terminal to a base station, comprising: a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to: maintain an active voice call with the base station; receive a single discovery burst from the base station; and send a response to the base station, wherein the response indicates whether the remote terminal is capable of multi-user on one slot operation. ### Claim 29 (depends on 28) The apparatus of claim 28, wherein the single discovery burst is received in place of a slow associated control channel frame. ### Claim 30 (depends on 28) The apparatus of claim 28, wherein a known interference pattern is superimposed on the single discovery burst. ### Claim 31 (depends on 28) The apparatus of claim 28, wherein the single discovery burst comprises a first signal and a second signal on a single channel, wherein the first signal comprises traffic data for the remote terminal, wherein the traffic data comprises a first predefined data sequence, wherein the second signal comprises a co-channel signal, and wherein the co-channel signal comprises a second predefined data sequence. ### Claim 32 (depends on 28) The apparatus of claim 28, wherein the response indicates a bit error probability measured by the remote terminal. ### Claim 33 (depends on 28) The apparatus of claim 28, wherein the response indicates an RxQual parameter for one slow associated control channel period. ### Claim 34 (depends on 28) The apparatus of claim 28, wherein the response indicates an RxLev parameter indicating average signal strength received. ### Claim 35 (depends on 28) The apparatus of claim 28, wherein the remote terminal is selected for co-channel operation if the remote terminal is capable of multi-user on one slot operation. ### Claim 36 An apparatus for determining capabilities of a remote terminal by a base station, comprising: means for maintaining an active voice call with the base station; means for receiving a single discovery burst from the base station; and means for sending a response to the base station, wherein the response indicates whether the remote terminal is capable of multi-user on one slot operation. ### Claim 37 (depends on 36) The apparatus of claim 36, wherein the single discovery burst is received in place of a slow associated control channel frame. ### Claim 38 (depends on 36) The apparatus of claim 36, wherein a known interference pattern is superimposed on the single discovery burst. ### Claim 39 (depends on 36) The apparatus of claim 36, wherein the single discovery burst comprises a first signal and a second signal on a single channel, wherein the first signal comprises traffic data for the remote terminal, wherein the traffic data comprises a first predefined data sequence, wherein the second signal comprises a co-channel signal, and wherein the co-channel signal comprises a second predefined data sequence. ### Claim 40 A computer-program product for wireless communications, the computer-program product comprising a non-transitory computer-readable medium having instructions thereon, the instructions comprising: code for causing a remote terminal to maintain an active voice call with a base station; code for causing the remote terminal to receive a single discovery burst from the base station; and code for causing the remote terminal to send a response to the base station, wherein the response indicates whether the remote terminal is capable of multi-user on one slot operation.