Signature sequence-based signaling and allocation of resources of a shared spectrum
Aspects of the disclosure relate to wireless communication systems configured to share a shared spectrum with one or more other systems (e.g., other operator networks utilizing the same radio access technology, and/or other networks utilizing different radio access technologies). Coexistence between the different systems on the shared spectrum may be provided by utilizing a technology-neutral signature waveform such as a signature sequence or discovery signal. The signature sequence may be used for resource reservation, scheduling, and coordination among disparate systems operating on a shared spectrum. Other aspects, embodiments, and features are also claimed and described.
1. A method of wireless communication operable by a first device utilizing a shared spectrum for communication over a first system, the method comprising:
semi-statically reserving a first set of resources on the shared spectrum by utilizing a first signature sequence standardized by a plurality of systems utilizing the shared spectrum, wherein the semi-statically reserved first set of resources remains effective until another signature sequence configured to modify the first set of resources;
transmitting, without first checking for a clear channel, at least one of synchronization signals, reference signals, broadcast channels, discovery signals, control channel messages, or quality of service (QoS) sensitive data during the semi-statically reserved first set of resources; and
utilizing a contention-based access mechanism to access the shared spectrum using a second set of resources other than the first set of resources.
2. The method of claim 1 , further comprising:
monitoring for a second signature sequence indicating a second semi-static reservation of resources for a second system other than the first system; and
forgoing to transmit and to utilize the contention-based access mechanism to access the shared spectrum corresponding to the second semi-static reservation of resources.
3. The method of claim 1 , further comprising:
transmitting a second signature sequence configured as a discovery signal to indicate resource usage by the first device on the shared spectrum, during the semi-statically reserved first set of resources.
4. The method of claim 1 , further comprising:
determining an energy of a second signature sequence received from a second system;
if the energy is greater than an energy threshold, employing the contention-based access mechanism for data transmissions; and
if the energy is not greater than the energy threshold, utilizing a semi-static partitioning of resources on a data channel for the data transmissions, wherein the semi-static partitioning is based on one or more received discovery signals from one or more other systems.
5. The method of claim 1 , wherein the utilizing the contention-based access mechanism comprises:
transmitting a second signature sequence configured to act as a request to send (RTS);
receiving a third signature sequence configured to act as a clear to send (CTS);
determining a dynamic reservation of resources on the shared spectrum based on the RTS and CTS; and
transmitting on the resources corresponding to the dynamic reservation.
6. The method of claim 5 ,
wherein the dynamic reservation of resources extends for a duration of time that overlaps at least one resource corresponding to the semi-static reservation; and
wherein the transmitting on the resources corresponding to the dynamic reservation comprises:
pausing the transmitting on the resources corresponding to the dynamic reservation, to make way for the semi-static reservation; and
resuming the transmitting on the resources corresponding to the dynamic reservation subsequent to the resources corresponding to the semi-static reservation.
7. The method of claim 1 , wherein the first set of resources comprises resources that recur periodically.
8. A wireless communication device comprising:
a processor;
a memory communicatively coupled to the processor; and
a transceiver communicatively coupled to the processor,
wherein the processor, transceiver, and memory are configured to:
semi-statically reserve a first set of resources on a shared spectrum for communication over a first system by utilizing a first signature sequence standardized by a plurality of systems utilizing the shared spectrum, wherein the semi-statically reserved first set of resources remains effective until another signature sequence configured to modify the first set of resources;
transmit, without first checking for a clear channel, at least one of synchronization signals, reference signals, broadcast channels, discovery signals, control channel messages, or quality of service (QoS) sensitive data during the semi-statically reserved first set of resources; and
utilize a contention-based access mechanism to access the shared spectrum using a second set of resources other than the first set of resources.
9. The wireless communication device of claim 8 , wherein the processor, transceiver, and memory are further configured to:
monitor for a second signature sequence indicating a second semi-static reservation of resources for a second system other than the first system; and
forgo to transmit and to utilize the contention-based access mechanism to access the shared spectrum corresponding to the second semi-static reservation of resources.
10. The wireless communication device of claim 8 , wherein the processor, transceiver, and memory are further configured to:
transmit a second signature sequence configured as a discovery signal to indicate resource usage by the wireless communication device on the shared spectrum, during the semi-statically reserved first set of resources.
11. The wireless communication device of claim 8 , wherein the processor, transceiver, and memory are further configured to:
determine an energy of a second signature sequence received from a second system;
if the energy is greater than an energy threshold, employ the contention-based access mechanism for data transmissions; and
if the energy is not greater than the energy threshold, utilize a semi-static partitioning of resources on a data channel for the data transmissions, wherein the semi-static partitioning is based on one or more received discovery signals from one or more other systems.
12. The wireless communication device of claim 8 , wherein the processor, transceiver, and memory are further configured to utilize the contention-based access mechanism by:
transmitting a second signature sequence configured to act as a request to send (RTS);
receiving a third signature sequence configured to act as a clear to send (CTS);
determining a dynamic reservation of resources on the shared spectrum based on the RTS and CTS; and
transmitting on the resources corresponding to the dynamic reservation.
13. The wireless communication device of claim 12 ,
wherein the dynamic reservation of resources extends for a duration of time that overlaps at least one resource corresponding to the semi-static reservation; and
wherein the processor, transceiver, and memory are further configured to:
pause the transmitting on the resources corresponding to the dynamic reservation, to make way for the semi-static reservation; and
resume the transmitting on the resources corresponding to the dynamic reservation subsequent to the resources corresponding to the semi-static reservation.
14. The wireless communication device of claim 8 , wherein the first set of resources comprises resources that recur periodically.
15. A non-transitory computer readable medium storing computer executable code comprising instructions for causing a first device to utilize a shared spectrum for communication over a first system, by:
semi-statically reserving a first set of resources on the shared spectrum by utilizing a first signature sequence standardized by a plurality of systems utilizing the shared spectrum, wherein the semi-statically reserved first set of resources remains effective until another signature sequence configured to modify the first set of resources;
transmitting, without first checking for a clear channel, at least one of synchronization signals, reference signals, broadcast channels, discovery signals, control channel messages, or quality of service (QoS) sensitive data during the semi-statically reserved first set of resources; and
utilizing a contention-based access mechanism to access the shared spectrum using a second set of resources other than the first set of resources.
16. The non-transitory computer readable medium of claim 15 , wherein the instructions further cause the first device to:
monitor for a second signature sequence indicating a second semi-static reservation of resources for a second system other than the first system; and
forgo to transmit and to utilize the contention-based access mechanism to access the shared spectrum corresponding to the second semi-static reservation of resources.
17. The non-transitory computer readable medium of claim 15 , wherein the instructions further cause the first device to:
transmit a second signature sequence configured as a discovery signal to indicate resource usage by the first device on the shared spectrum, during the semi-statically reserved first set of resources.
18. The non-transitory computer readable medium of claim 15 , wherein the instructions further cause the first device to:
determine an energy of a second signature sequence received from a second system;
if the energy is greater than an energy threshold, employ the contention-based access mechanism for data transmissions; and
if the energy is not greater than the energy threshold, utilize a semi-static partitioning of resources on a data channel for the data transmissions, wherein the semi-static partitioning is based on one or more received discovery signals from one or more other systems.
19. The non-transitory computer readable medium of claim 15 , wherein the instructions further cause the first device to utilize the contention-based access mechanism to:
transmit a second signature sequence configured to act as a request to send (RTS);
receive a third signature sequence configured to act as a clear to send (CTS);
determine a dynamic reservation of resources on the shared spectrum based on the RTS and CTS; and
transmit on the resources corresponding to the dynamic reservation.
20. The non-transitory computer readable medium of claim 19 ,
wherein the dynamic reservation of resources extends for a duration of time that overlaps at least one resource corresponding to the semi-static reservation; and
wherein the instructions further cause the first device to transmit on the resources corresponding to the dynamic reservation by:
pausing the transmitting on the resources corresponding to the dynamic reservation, to make way for the semi-static reservation; and
resuming the transmitting on the resources corresponding to the dynamic reservation subsequent to the resources corresponding to the semi-static reservation.
21. A wireless communication device configured to utilize a shared spectrum for communication over a first system, comprising:
means for semi-statically reserving a first set of resources on the shared spectrum by utilizing a first signature sequence standardized by a plurality of systems utilizing the shared spectrum, wherein the semi-statically reserved first set of resources remains effective until another signature sequence configured to modify the first set of resources;
means for transmitting, without first checking for a clear channel, at least one of synchronization signals, reference signals, broadcast channels, discovery signals, control channel messages, or quality of service (QoS) sensitive data during the semi-statically reserved first set of resources; and
means for utilizing a contention-based access mechanism to access the shared spectrum using a second set of resources other than the first set of resources.
22. The wireless communication device of claim 21 , further comprising:
means for monitoring for a second signature sequence indicating a second semi-static reservation of resources for a second system other than the first system; and
means for forgoing to transmit and to utilize the contention-based access mechanism to access the shared spectrum corresponding to the second semi-static reservation of resources.
23. The wireless communication device of claim 21 , further comprising:
means for transmitting a second signature sequence configured as a discovery signal to indicate resource usage by the first device on the shared spectrum, during the semi-statically reserved first set of resources.
24. The wireless communication device of claim 21 , further comprising:
means for determining an energy of a second signature sequence received from a second system;
means for if the energy is greater than an energy threshold, employing the contention-based access mechanism for data transmissions; and
means for if the energy is not greater than the energy threshold, utilizing a semi-static partitioning of resources on a data channel for the data transmissions, wherein the semi-static partitioning is based on one or more received discovery signals from one or more other systems.
25. The wireless communication device of claim 21 , wherein the means for utilizing the contention-based access mechanism comprises:
means for transmitting a second signature sequence configured to act as a request to send (RTS);
means for receiving a third signature sequence configured to act as a clear to send (CTS);
means for determining a dynamic reservation of resources on the shared spectrum based on the RTS and CTS; and
means for transmitting on the resources corresponding to the dynamic reservation.
26. The wireless communication device of claim 25 ,
wherein the dynamic reservation of resources extends for a duration of time that overlaps at least one resource corresponding to the semi-static reservation; and
wherein the means for transmitting on the resources corresponding to the dynamic reservation is configured to:
pause the transmitting on the resources corresponding to the dynamic reservation, to make way for the semi-static reservation; and
resume the transmitting on the resources corresponding to the dynamic reservation subsequent to the resources corresponding to the semi-static reservation.