Uplink resource allocation in a wireless network
A plurality of cells comprise a primary cell with no configured scheduling request (SR) resources and a secondary cell with configured SR resources. A wireless device transmits an SR associated with an SR process in the SR resources. The wireless device monitors at least one downlink control channel for uplink grants. The wireless device initiates a random access procedure and cancels the SR process when in a subframe: the SR process is pending; no uplink data channel resources are available for transmission; and a time alignment timer of an sTAG comprising the secondary cell is not running.
1. A method comprising:
receiving, by a wireless device, at least one message comprising configuration parameters of a plurality of cells, the plurality of cells comprising:
a primary cell with no configured scheduling request (SR) resources; and
a secondary cell with configured SR resources, the secondary cell being in a secondary timing advance group (sTAG);
transmitting an SR associated with an SR process in the SR resources;
monitoring at least one downlink control channel for one or more uplink grants; and
initiating a random access procedure and canceling the SR process when in a subframe:
the SR process is pending;
no uplink data channel resources are available for transmission; and
a time alignment timer of the sTAG is not running.
2. The method of claim 1 , wherein the secondary cell is in an activated state in the subframe.
3. The method of claim 1 , wherein an SR prohibit timer is not running.
4. The method of claim 1 , further comprising transmitting a random access preamble in random access resources of the primary cell.
5. The method of claim 1 , wherein the plurality of cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:
a primary PUCCH group comprising the primary cell with a primary PUCCH transmitted to a base station; and
a secondary PUCCH group comprising the secondary cell with a secondary PUCCH transmitted to the base station.
6. The method of claim 1 , wherein the plurality of cells are grouped into a plurality of timing advance groups (TAGs) comprising:
a primary TAG comprising the primary cell; and
the sTAG comprising the secondary cell.
7. The method of claim 1 , further comprising receiving a random access response comprising an uplink grant.
8. The method of claim 1 , wherein the at least one message comprises a time alignment timer parameter for the sTAG.
9. The method of claim 1 , wherein the at least one message comprises:
first configuration parameters of a primary PUCCH for the primary cell; and
second configuration parameters of a secondary PUCCH for the secondary cell.
10. The method of claim 1 , further comprising the wireless device initiating the SR process when the wireless device has one or more uplink packets for transmission.
11. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed, cause the wireless device to:
receive at least one message comprising configuration parameters of a plurality of cells, the plurality of cells comprising:
a primary cell with no configured scheduling request (SR) resources; and
a secondary cell with configured SR resources, the secondary cell being in a secondary timing advance group (sTAG);
transmit an SR associated with an SR process in the SR resources;
monitor at least one downlink control channel for one or more uplink grants; and
initiate a random access procedure and cancel the SR process when in a subframe:
the SR process is pending;
no uplink data channel resources are available for transmission; and
a time alignment timer of the sTAG is not running.
12. The wireless device of claim 11 , wherein the secondary cell is in an activated state in the subframe.
13. The wireless device of claim 11 , wherein an SR prohibit timer is not running.
14. The wireless device of claim 11 , wherein the instructions, when executed, further cause the wireless device to transmit a random access preamble in random access resources of the primary cell.
15. The wireless device of claim 11 , wherein the plurality of cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:
a primary PUCCH group comprising the primary cell with a primary PUCCH transmitted to a base station; and
a secondary PUCCH group comprising the secondary cell with a secondary PUCCH transmitted to the base station.
16. The wireless device of claim 11 , wherein the plurality of cells are grouped into a plurality of timing advance groups (TAGs) comprising:
a primary TAG comprising the primary cell; and
the sTAG comprising the secondary cell.
17. The wireless device of claim 11 , wherein the instructions, when executed, further cause the wireless device to receive a random access response comprising an uplink grant.
18. The wireless device of claim 11 , wherein the at least one message comprises a time alignment timer parameter for the sTAG.
19. The wireless device of claim 11 , wherein the configuration parameters comprise:
first configuration parameters of a primary PUCCH for the primary cell; and
second configuration parameters of a secondary PUCCH for the secondary cell.
20. The wireless device of claim 11 , wherein the instructions, when executed, further cause the wireless device to initiate the SR process when the wireless device has one or more uplink packets for transmission.