Communication of transport blocks and valid channel state information in a wireless network
A wireless device receives configuration parameters of a secondary cell, of a first timing advance group, with a secondary physical uplink control channel. A random access response is received in a first subframe. The random access response comprises a timing advance associated with the first timing advance group. Transmission of transport blocks is started via the first timing advance group on or before a second subframe that is four subframes after the first subframe. Transmission of valid channel state information is started via the secondary cell on or after a third subframe that is six subframes after the first subframe.
1. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive configuration parameters of a secondary cell, of a first timing advance group, with a secondary physical uplink control channel;
receive a physical downlink control channel order to initiate a random access process;
transmit a random access preamble based on the physical downlink control channel order;
receive, in a first subframe, a random access response comprising a timing advance associated with the first timing advance group; and
start transmission of valid channel state information via the secondary cell on or after a third subframe that is six subframes after the first subframe.
2. The wireless device of claim 1 , wherein the instructions, when executed, further cause the wireless device to:
receive an activation command indicating an activation of the secondary cell; and
receive a control command for transmission of a preamble via the first timing advance group.
3. The wireless device of claim 1 , wherein the random access response further comprises an uplink grant for transmission of transport blocks.
4. The wireless device of claim 1 , wherein the instructions, when executed, further cause the wireless device to start a time alignment timer of the first timing advance group on or before a second subframe that is four subframes after the first subframe.
5. The wireless device of claim 1 , wherein the instructions, when executed, further cause the wireless device to adjust uplink transmission timing on or after the third subframe that is six subframes after the first subframe.
6. The wireless device of claim 1 , wherein the timing advance is received when a time alignment timer of the first timing advance group is not running.
7. The wireless device of claim 1 , wherein transport blocks are transmitted on a physical uplink shared channel.
8. The wireless device of claim 1 , wherein the instructions, when executed, further cause the wireless device to receive, in a fourth subframe and before receiving the timing advance, an activation command configured to activate the secondary cell and starting a deactivation timer in a fifth subframe that is eight subframes after the fourth subframe.
9. The wireless device of claim 1 , wherein the configuration parameters further comprise parameters of a plurality of cells, wherein the plurality of cells are grouped into a plurality of physical uplink control channel groups comprising:
a primary physical uplink control channel group comprising a primary cell; and
a secondary physical uplink control channel group comprising the secondary cell.
10. The wireless device of claim 1 , wherein the valid channel state information is for an activated cell in a secondary physical uplink control channel group.
11. The wireless device of claim 1 , wherein the instructions, when executed, further cause the wireless device to start transmission of transport blocks via the first timing advance group on or before a second subframe that is four subframes after the first subframe.
12. A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit configuration parameters of a secondary cell, of a first timing advance group, with a secondary physical uplink control channel;
transmit a physical downlink control channel order to initiate a random access process;
receive a random access preamble based on the physical downlink control channel order;
transmit, in a first subframe, a random access response comprising a timing advance associated with the first timing advance group; and
start reception of valid channel state information via the secondary cell on or after a third subframe that is six subframes after the first subframe.
13. The base station of claim 12 , wherein the instructions, when executed, further cause the base station to:
transmit an activation command indicating an activation of the secondary cell; and
transmit a control command for transmission of a preamble via the first timing advance group.
14. The base station of claim 12 , wherein the random access response further comprises an uplink grant for transmission of transport blocks.
15. The base station of claim 12 , wherein the instructions, when executed, further cause the base station to start a time alignment timer of the first timing advance group on or before a second subframe that is four subframes after the first subframe.
16. The base station of claim 12 , wherein the instructions, when executed, further cause the base station to adjust uplink transmission timing on or after the third subframe that is six subframes after the first subframe.
17. The base station of claim 12 , wherein the timing advance is transmitted when a time alignment timer of the first timing advance group is not running.
18. The base station of claim 12 , wherein transport blocks are received on a physical uplink shared channel.
19. The base station of claim 12 , wherein the instructions, when executed, further cause the base station to transmit, in a fourth subframe and before transmit the timing advance, an activation command configured to activate the secondary cell and starting a deactivation timer in a fifth subframe that is eight subframes after the fourth subframe.
20. The base station of claim 12 , wherein the configuration parameters further comprise parameters of a plurality of cells, wherein the plurality of cells are grouped into a plurality of physical uplink control channel groups comprising:
a primary physical uplink control channel group comprising a primary cell; and
a secondary physical uplink control channel group comprising the secondary cell.
21. The base station of claim 12 , wherein the valid channel state information is for an activated cell in a secondary physical uplink control channel group.
22. The base station of claim 12 , wherein the instructions, when executed, further cause the base station to start reception of transport blocks via the first timing advance group on or before a second subframe that is four subframes after the first subframe.