Control and data channel radio resource configuration
According to some aspects, a base station may transmit a radio resources control (RRC) message to a wireless device. The RRC message may comprise configuration parameters for an enhanced physical downlink control channel (ePDCCH) associated with one or more subframes in a frame. The base station may transmit, via the ePDCCH, scheduling information for a packet. The base station may receive the packet according to the scheduling information, for example.
1. A method comprising:
transmitting, by a base station and to a wireless device, configuration parameters of an enhanced physical downlink control channel (ePDCCH), wherein the configuration parameters indicate:
at least one subframe in which the ePDCCH is configured; and
an ePDCCH starting symbol of the ePDCCH,
wherein no information is in each symbol, in the at least one subframe, prior to the ePDCCH starting symbols; and
transmitting, to the wireless device via the ePDCCH, packet scheduling information.
2. The method of claim 1 , further comprising transmitting, to the wireless device and based on the packet scheduling information, at least one packet.
3. The method of claim 1 , wherein the packet scheduling information is for transmission of a packet via a downlink data channel.
4. The method of claim 1 , wherein transmission power of each symbol, in the at least one subframe, prior to the ePDCCH starting symbol is zero.
5. The method of claim 1 , wherein the configuration parameters indicate that in the at least one subframe, a symbol position of the ePDCCH starting symbol is the same as a starting position of a downlink data channel associated with the ePDCCH.
6. The method of claim 1 , wherein the configuration parameters indicate that a downlink data channel, associated with the at least one subframe, begins in time at a first symbol number in a series of symbols of the at least one subframe.
7. 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, to a wireless device, configuration parameters of an enhanced physical downlink control channel (ePDCCH), wherein the configuration parameters indicate:
at least one subframe in which the ePDCCH is configured; and
an ePDCCH starting symbol of the ePDCCH,
wherein no information is in each symbol, in the at least one subframe, prior to the ePDCCH starting symbol; and
transmit, to the wireless device via the ePDCCH, packet scheduling information.
8. The base station of claim 7 , wherein the instructions, when executed by the one or more processors, further cause the base station to transmit, to the wireless device and based on the packet scheduling information, at least one packet.
9. The base station of claim 7 , wherein the packet scheduling information is for transmission of a packet via a downlink data channel.
10. The base station of claim 7 , wherein transmission power of each symbol, in the at least one subframe, prior to the ePDCCH starting symbol is zero.
11. The base station of claim 7 , wherein the configuration parameters indicate that in the at least one subframe, a symbol position of the ePDCCH starting symbol is the same as a starting position of a downlink data channel associated with the ePDCCH.
12. The base station of claim 7 , wherein the configuration parameters indicate that a downlink data channel, associated with the at least one subframe, begins in time at a first symbol number in a series of symbols of the at least one subframe.
13. A method comprising:
receiving, by a wireless device and from a base station, configuration parameters of an enhanced physical downlink control channel (ePDCCH), wherein the configuration parameters indicate:
at least one subframe in which the ePDCCH is configured; and
an ePDCCH starting symbol of the ePDCCH,
wherein no information is in each symbol, in the at least one subframe, prior to the ePDCCH starting symbol; and
receiving, by the wireless device via the ePDCCH, packet scheduling information.
14. The method of claim 13 , further comprising receiving, based on the packet scheduling information, at least one packet.
15. The method of claim 13 , wherein the packet scheduling information is for transmission of a packet via a downlink data channel.
16. The method of claim 13 , wherein transmission power of each symbol, in the at least one subframe, prior to the ePDCCH starting symbol is zero.
17. The method of claim 13 , wherein the configuration parameters indicate that in the at least one subframe, a symbol position of the ePDCCH starting symbol is the same as a starting position of a downlink data channel associated with the ePDCCH.
18. The method of claim 13 , wherein the configuration parameters indicate that a downlink data channel, associated with the at least one subframe, begins in time at a first symbol number in a series of symbols of the at least one subframe.
19. 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, from a base station, configuration parameters of an enhanced physical downlink control channel (ePDCCH), wherein the configuration parameters indicate:
at least one subframe in which the ePDCCH is configured; and
an ePDCCH starting symbol of the ePDCCH,
wherein no information is in each symbol, in the at least one subframe, prior to the ePDCCH starting symbol; and
receive, via the ePDCCH, packet scheduling information.
20. The wireless device of claim 19 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive, based on the packet scheduling information, at least one packet.
21. The wireless device of claim 19 , wherein the packet scheduling information is for transmission of a packet via a downlink data channel.
22. The wireless device of claim 19 , wherein transmission power of each symbol, in the at least one subframe, prior to the ePDCCH starting symbol is zero.
23. The wireless device of claim 19 , wherein the configuration parameters indicate that in the at least one subframe, a symbol position of the ePDCCH starting symbol is the same as a starting position of a downlink data channel associated with the ePDCCH.
24. The wireless device of claim 19 , wherein the configuration parameters indicate that a downlink data channel, associated with the at least one subframe, begins in time at a first symbol number in a series of symbols of the at least one subframe.
25. A system comprising:
a base station and a wireless device,
wherein the base station comprises:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit, to the wireless device, configuration parameters of an enhanced physical downlink control channel (ePDCCH), wherein the configuration parameters indicate:
at least one subframe in which the ePDCCH is configured; and
an ePDCCH starting symbol of the ePDCCH,
wherein no information is in each symbol, in the at least one subframe, prior to the ePDCCH starting symbol; and
transmit, to the wireless device via the ePDCCH, packet scheduling information, and
wherein the wireless device comprises:
one or more processors; and
memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to:
receive, via the ePDCCH, the packet scheduling information.
26. The system of claim 25 , wherein the instructions in the memory of the base station, when executed by the one or more processors of the base station, further cause the base station to transmit, to the wireless device and based on the packet scheduling information, at least one packet.
27. The system of claim 25 , wherein the packet scheduling information is for transmission of a packet via a downlink data channel.
28. The system of claim 25 , wherein transmission power of each symbol, prior to the ePDCCH starting symbol is zero.
29. The system of claim 25 , wherein the configuration parameters indicate that in the at least one subframe, a symbol position of the ePDCCH starting symbol is the same as a starting position of a downlink data channel associated with the ePDCCH.
30. The system of claim 25 , wherein the configuration parameters indicate that a downlink data channel, associated with the at least one subframe, begins in time at a first symbol number in a series of symbols of the at least one subframe.