Wireless communication method for device to device communication and user equipment
Provided are wireless communication methods for D2D communication and UEs therefor. A wireless communication method involves transmitting either a first DCI or a second DCI based on whether a first UE and a second UE are to be in a communication type of groupcast or unicast. In the wireless communication methods, the first DCI and the second DCI are scrambled by the UE ID of the second UE if the first UE and the second UE are in the communication type of unicast upon transmitting the first DCI and the second DCI, and the first DCI and the second DCI are scrambled by the group ID if the first UE and the second UE are in the communication type of groupcast upon transmitting the first DCI and the second DCI.
1. A method performed by a first user equipment (UE), the method comprising:
receiving, from a second UE, control information in a physical control channel, wherein the control information is scrambled by a first group ID and includes a second group ID and resource allocation information, the resource allocation information indicating allocated resources including a frequency hopping pattern;
decoding the control information using the first group ID;
receiving, from the second UE, data in a physical shared channel, wherein the data is scrambled by the second group ID and is mapped in the allocated resources indicated by the resource allocation information; and
decoding the data using the second group ID.
2. The method according to claim 1 , wherein
the resource allocation information indicates a resource allocation pattern selected from a set of resource allocation patterns.
3. The method according to claim 1 , wherein
the resource allocation information indicates a time resource pattern of the allocated resources.
4. The method according to claim 1 , wherein
the resource allocation information indicates the allocated resources with the frequency hopping or the allocated resources without the frequency hopping.
5. A first user equipment (UE), comprising:
a receiver, which, in operation, receives from a second UE,
control information in a physical control channel, wherein the control information is scrambled by a first group ID and includes a second group ID and resource allocation information, the resource allocation information indicating allocated resources including a frequency hopping pattern; and
data in a physical shared channel, wherein the data is scramble by the second group ID and is mapped in the allocated resources indicated by the resource allocation information; and
circuitry, which is coupled to the receiver and which, in operation, decodes the control information using the first group ID and decodes the data using the second group ID.
6. The first user equipment (UE) according to claim 5 , wherein
the resource allocation information indicates a resource allocation pattern selected from a set of resource allocation patterns.
7. The first user equipment (UE) according to claim 5 , wherein
the resource allocation information indicates a time resource pattern of the allocated resources.
8. The user equipment according to claim 5 , wherein
the resource allocation information indicates the allocated resources with the frequency hopping or the allocated resources without the frequency hopping.