# US 2017/0289907 A1 · Configurable subframe structures in wireless communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0289907 A1 - Document ID: US20170289907A1 - Status: Published application - Kind: A1 - Application number: 15/271,439 - Filed: 2016-09-21 - Published: 2017-10-05 - Earliest claimed: 2016-04-05 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Peter Pui Lok Ang; Tao Luo; Joseph Binamira Soriaga; Tingfang Ji; Krishna Kiran Mukkavilli - Web page: https://patentgrep.com/patent/US20170289907A1 ## CPC - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Some aspects of the disclosure provide for a flexible and reconfigurable subframe structure that allows various devices with different capabilities and frequency agility to efficiently utilize the available channel bandwidth (BW) and/or save power. In some aspects of the disclosure, the reference signal and/or control channel placement in the subframe can facilitate faster processing and increased sleep mode duration of the devices. ## Claims ### Claim 1 A method of wireless communication operable at a scheduling entity, comprising: communicating with one or more subordinate entities including a first subordinate entity and a second subordinate entity utilizing a multi-transmission time interval (TTI) subframe comprising two or more transmission time intervals; transmitting scheduling information to the first subordinate entity to utilize a first transmission time interval (TTI) of the two or more transmission time intervals; and transmitting scheduling information to the second subordinate entity to utilize a second TTI of the two or more transmission time intervals. ### Claim 2 (depends on 1) The method of claim 1, wherein the first TTI has a different time duration than the second TTI. ### Claim 3 (depends on 1) The method of claim 1, wherein the transmitting scheduling information comprises: transmitting data assignment information in a control channel at a first symbol of the multi-TTI subframe to the first and second subordinate entities to expedite the first subordinate entity entering a sleep mode during the multi-TTI subframe when the data assignment information indicates that no data is assigned to the first subordinate entity in the multi-TTI subframe. ### Claim 4 (depends on 1) The method of claim 1, wherein the transmitting scheduling information comprises transmitting subband assignment information in a control channel at a first symbol of the multi-TTI subframe to the one or more subordinate entities to facilitate a bandwidth switching operation in the multi-TTI subframe. ### Claim 5 (depends on 1) The method of claim 1, wherein the multi-TTI subframe comprises a control region configured for transmitting a control channel at a first symbol of the multi-TTI subframe, the method further comprising: front-loading one or more reference signals in the control channel of the multi-TTI subframe. ### Claim 6 (depends on 1) The method of claim 1, wherein the scheduling information is configured to: allocate a first bandwidth to the first subordinate entity and a second bandwidth to the second subordinate entity, wherein the first bandwidth is narrower than the second bandwidth. ### Claim 7 (depends on 1) The method of claim 1, wherein the scheduling information is configured to: allocate a first bandwidth to a control region of the multi-TTI subframe and a second bandwidth to a data region of the multi-TTI subframe, wherein the first bandwidth is narrower than the second bandwidth. ### Claim 8 (depends on 1) The method of claim 1, wherein the multi-TTI subframe comprises a control region in the first TTI configured to provide control information for the second subordinate entity scheduled to the second TTI. ### Claim 9 (depends on 1) The method of claim 1, further comprising: transmitting scheduling information to the one or more subordinate entities to utilize different transmission time intervals in the multi-TTI subframe on a subframe by subframe basis. ### Claim 10 (depends on 1) The method of claim 1, further comprising: transmitting scheduling information to the one or more subordinate entities to utilize different subbands, respectively. ### Claim 11 (depends on 1) The method of claim 1, further comprising: partitioning the first TTI or second TTI into a plurality of subbands for respective control channels, wherein the control channels are configured to utilize different reference signal modulations. ### Claim 12 A scheduling entity configured for wireless communication, comprising: a communication interface configured to communicate with one or more subordinate entities; a memory comprising executable code; and a processor coupled to the communication interface and the memory, wherein the processor is configured by the executable code to: communicate with the one or more subordinate entities including a first subordinate entity and a second subordinate entity utilizing a multi-transmission time interval (TTI) subframe comprising two or more transmission time intervals; transmit scheduling information to the first subordinate entity to utilize a first transmission time interval (TTI) of the two or more transmission time intervals; and transmit scheduling information to the second subordinate entity to utilize a second TTI of the two or more transmission time intervals. ### Claim 13 (depends on 12) The scheduling entity of claim 12, wherein the first TTI has a different time duration than the second TTI. ### Claim 14 (depends on 12) The scheduling entity of claim 12, wherein the processor is further configured to: transmit data assignment information in a control channel at a first symbol of the multi-TTI subframe to the first and second subordinate entities to expedite the first subordinate entity entering a sleep mode during the multi-TTI subframe when the data assignment information indicates that no data is assigned to the first subordinate entity in the multi-TTI subframe. ### Claim 15 (depends on 12) The scheduling entity of claim 12, wherein the processor is further configured to: transmit subband assignment information in a control channel at a first symbol of the multi-TTI subframe to the one or more subordinate entities to facilitate a bandwidth switching operation in the multi-TTI subframe. ### Claim 16 (depends on 12) The scheduling entity of claim 12, wherein the multi-TTI subframe comprises a control region configured for transmitting a control channel at a first symbol of the multi-TTI subframe, wherein the processor is further configured to: front-load one or more reference signals in the control channel of the multi-TTI subframe. ### Claim 17 (depends on 12) The scheduling entity of claim 12, wherein the scheduling information is configured to: allocate a first bandwidth to the first subordinate entity and a second bandwidth to the second subordinate entity, wherein the first bandwidth is narrower than the second bandwidth. ### Claim 18 (depends on 12) The scheduling entity of claim 12, wherein the scheduling information is configured to: allocate a first bandwidth to a control region of the multi-TTI subframe and a second bandwidth to a data region of the multi-TTI subframe, wherein the first bandwidth is narrower than the second bandwidth. ### Claim 19 (depends on 12) The scheduling entity of claim 12, wherein the multi-TTI subframe comprises a control region in the first TTI configured to provide control information for the second subordinate entity scheduled to the second TTI. ### Claim 20 (depends on 12) The scheduling entity of claim 12, wherein the processor is further configured to: transmit scheduling information to the one or more subordinate entities to utilize different transmission time intervals in the multi-TTI subframe on a subframe by subframe basis. ### Claim 21 (depends on 12) The scheduling entity of claim 12, wherein the processor is further configured to: transmit scheduling information to the one or more subordinate entities to utilize different subbands, respectively. ### Claim 22 (depends on 12) The scheduling entity of claim 12, wherein the processor is further configured to: partition the first TTI or second TTI into a plurality of subbands for respective control channels, wherein the control channels are configured to utilize different reference signal modulations. ### Claim 23 A scheduling entity configured for wireless communication, comprising: means for communicating with one or more subordinate entities including a first subordinate entity and a second subordinate entity utilizing a multi-transmission time interval (TTI) subframe comprising two or more transmission time intervals; means for transmitting scheduling information to the first subordinate entity to utilize a first transmission time interval (TTI) of the two or more transmission time intervals; and means for transmitting scheduling information to the second subordinate entity to utilize a second TTI of the two or more transmission time intervals. ### Claim 24 (depends on 23) The scheduling entity of claim 23, wherein the means for transmitting scheduling information is configured to, at least one of: transmit data assignment information in a control channel at a first symbol of the multi-TTI subframe to the first and second subordinate entities to expedite the first subordinate entity entering a sleep mode during the multi-TTI subframe when the data assignment information indicates that no data is assigned to the first subordinate entity in the multi-TTI subframe; or transmit subband assignment information in a control channel at a first symbol of the multi-TTI subframe to the one or more subordinate entities to facilitate a bandwidth switching operation in the multi-TTI subframe. ### Claim 25 (depends on 23) The scheduling entity of claim 23, wherein the multi-TTI subframe comprises a control region configured for transmitting a control channel at a first symbol of the multi-TTI subframe, further comprising: means for front-loading one or more reference signals in the control channel of the multi-TTI subframe. ### Claim 26 (depends on 23) The scheduling entity of claim 23, further comprising: means for transmitting scheduling information to the one or more subordinate entities to utilize different transmission time intervals in the multi-TTI subframe on a subframe by subframe basis. ### Claim 27 A computer-readable storage medium comprising executable code for causing a scheduling entity to: communicate with one or more subordinate entities including a first subordinate entity and a second subordinate entity utilizing a multi-transmission time interval (TTI) subframe comprising two or more transmission time intervals; transmit scheduling information to the first subordinate entity to utilize a first transmission time interval (TTI) of the two or more transmission time intervals; and transmit scheduling information to the second subordinate entity to utilize a second TTI of the two or more transmission time intervals. ### Claim 28 (depends on 27) The computer-readable storage medium of claim 27, further comprising code for causing the scheduling entity to, at least one of: transmit data assignment information in a control channel at a first symbol of the multi-TTI subframe to the first and second subordinate entities to expedite the first subordinate entity entering a sleep mode during the multi-TTI subframe when the data assignment information indicates that no data is assigned to the first subordinate entity in the multi-TTI subframe; or transmit subband assignment information in a control channel at a first symbol of the multi-TTI subframe to the one or more subordinate entities to facilitate a bandwidth switching operation in the multi-TTI subframe. ### Claim 29 (depends on 27) The computer-readable storage medium of claim 27, wherein the multi-TTI subframe comprises a control region configured for transmitting a control channel at a first symbol of the multi-TTI subframe, further comprising code for causing the scheduling entity to: front-load one or more reference signals in the control channel of the multi-TTI subframe. ### Claim 30 (depends on 27) The computer-readable storage medium of claim 27, further comprising code for causing the scheduling entity to: transmit scheduling information to the one or more subordinate entities to utilize different transmission time intervals in the multi-TTI subframe on a subframe by subframe basis.