Apparatus and method for determining D2D data resource for D2D communication
A method and apparatus for supporting a device-to-device (D2D) communication between user equipments (UEs) are provided. The method includes: receiving, at a UE, configuration information associated with a D2D data transmission resource, the configuration information including information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB); determining, at the UE, a D2D data transmission resource offset and a period associated with a D2D data transmission resource bitmap in each D2D data allocation period, the D2D data transmission resource bitmap including at least one bit corresponding to bit value “1”; and determining a pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap, the period associated with the D2D data transmission resource bitmap including the pool of subframes, the pool of subframes corresponding to D2D data transmission resources through which a D2D data transmission is capable.
1. A method of determining a device-to-device (D2D) data transmission resource for a user equipment (UE), the method comprising:
receiving, at a UE, configuration information associated with a D2D data transmission resource, the configuration information comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB);
determining, in each D2D data allocation period, a D2D data transmission resource offset and a duration associated with a D2D data transmission resource bitmap, the D2D data transmission resource bitmap comprising at least one bit corresponding to bit value “1”; and
determining a pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap, the duration associated with the D2D data transmission resource bitmap comprising the pool of subframes, the pool of subframes corresponding to D2D data transmission resources through which a D2D data transmission is capable,
wherein a plurality of repetitions of the D2D data transmission resource bitmap are associated with the duration associated with the D2D data transmission resource bitmap, and
wherein the pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap has a repetitive pattern in the duration associated with the D2D data transmission resource bitmap in accordance with the plurality of repetitions of the D2D data transmission resource bitmap.
2. The method of claim 1 , further comprising:
receiving, at the UE, information of the D2D data transmission resource offset and information of the D2D data transmission resource bitmap transmitted from the eNB.
3. The method of claim 1 , wherein:
a start point of the duration associated with the D2D data transmission resource bitmap is determined based on a start point of each D2D data allocation period and the D2D data transmission resource offset.
4. The method of claim 1 , wherein:
a plurality of repetitions of the D2D data transmission resource bitmap correspond to uplink subframes in the duration associated with the D2D data transmission resource bitmap.
5. The method of claim 1 , wherein:
the D2D data transmission resource offset is indicated as a number of subframes.
6. The method of claim 1 , wherein:
the D2D data allocation period is repeated a plurality of times in a time axis; and
in each D2D data allocation period, the D2D data transmission resource offset precedes the duration associated with a D2D data transmission resource bitmap.
7. A user equipment (UE) to determine a device-to-device (D2D) data transmission resource comprising:
a wireless transceiver configured to:
receive configuration information associated with a D2D data transmission resource, the configuration information comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB); and
one or more processors configured to:
determine, in each D2D data allocation period, a D2D data transmission resource offset and a duration associated with a D2D data transmission resource bitmap, the D2D data transmission resource bitmap comprising at least one bit corresponding to bit value “1”; and
determine a pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap, the duration associated with the D2D data transmission resource bitmap comprising the pool of subframes, the pool of subframes corresponding to D2D data transmission resources through which a D2D data transmission is capable,
wherein a plurality of repetitions of the D2D data transmission resource bitmap are associated with the period associated with the D2D data transmission resource bitmap, and
wherein the pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap has a repetitive pattern in the period associated with the D2D data transmission resource bitmap in accordance with the plurality of repetitions of the D2D data transmission resource bitmap.
8. The UE of claim 7 , wherein the wireless transceiver is configured to receive information of the D2D data transmission resource offset and information of the D2D data transmission resource bitmap transmitted from the eNB.
9. The UE of claim 7 , wherein:
a start point of the duration associated with the D2D data transmission resource bitmap is determined based on a start point of each D2D data allocation period and the D2D data transmission resource offset.
10. The UE of claim 7 , wherein:
a plurality of repetitions of the D2D data transmission resource bitmap correspond to uplink subframes in the duration associated with the D2D data transmission resource bitmap.
11. The UE of claim 7 , wherein:
the D2D data transmission resource offset is indicated as a number of subframes.
12. The UE of claim 7 , wherein:
the D2D data allocation period is repeated a plurality of times in a time axis; and
in each D2D data allocation period, the D2D data transmission resource offset precedes the duration associated with a D2D data transmission resource bitmap.
13. A method of determining a device-to-device (D2D) data transmission resource for a user equipment (UE), the method comprising:
receiving, at a UE, configuration information associated with a D2D data transmission resource, the configuration information comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB);
determining, in each D2D data allocation period, a D2D data transmission resource offset and a duration associated with a D2D data transmission resource bitmap, the D2D data transmission resource bitmap comprising at least one bit corresponding to bit value “1”; and
determining a pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap, the duration associated with the D2D data transmission resource bitmap comprising the pool of subframes, the pool of subframes corresponding to D2D data transmission resources through which a D2D data transmission is capable,
wherein the D2D data transmission resource offset is indicated as a number of subframes.
14. The method of claim 13 , further comprising:
receiving, at the UE, information of the D2D data transmission resource offset and information of the D2D data transmission resource bitmap transmitted from the eNB.
15. The method of claim 13 , wherein:
a start point of the duration associated with the D2D data transmission resource bitmap is determined based on a start point of each D2D data allocation period and the D2D data transmission resource offset.
16. The method of claim 13 , wherein:
a plurality of repetitions of the D2D data transmission resource bitmap correspond to uplink subframes in the duration associated with the D2D data transmission resource bitmap.
17. The method of claim 13 , wherein:
a plurality of repetitions of the D2D data transmission resource bitmap are associated with the duration associated with the D2D data transmission resource bitmap; and
the pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap has a repetitive pattern in the duration associated with the D2D data transmission resource bitmap in accordance with the plurality of repetitions of the D2D data transmission resource bitmap.
18. The method of claim 13 , wherein:
the D2D data allocation period is repeated a plurality of times in a time axis; and
in each D2D data allocation period, the D2D data transmission resource offset precedes the duration associated with a D2D data transmission resource bitmap.
19. A user equipment (UE) to determine a device-to-device (D2D) data transmission resource comprising:
a wireless transceiver configured to:
receive configuration information associated with a D2D data transmission resource, the configuration information comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB); and
one or more processors configured to:
determine, in each D2D data allocation period, a D2D data transmission resource offset and a duration associated with a D2D data transmission resource bitmap, the D2D data transmission resource bitmap comprising at least one bit corresponding to bit value “1”; and
determine a pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap, the duration associated with the D2D data transmission resource bitmap comprising the pool of subframes, the pool of subframes corresponding to D2D data transmission resources through which a D2D data transmission is capable,
wherein the D2D data transmission resource offset is indicated as a number of subframes.
20. The UE of claim 19 , wherein the wireless transceiver is configured to receive information of the D2D data transmission resource offset and information of the D2D data transmission resource bitmap transmitted from the eNB.
21. The UE of claim 19 , wherein:
a start point of the duration associated with the D2D data transmission resource bitmap is determined based on a start point of each D2D data allocation period and the D2D data transmission resource offset.
22. The UE of claim 19 , wherein:
a plurality of repetitions of the D2D data transmission resource bitmap correspond to uplink subframes in the duration associated with the D2D data transmission resource bitmap.
23. The UE of claim 19 , wherein:
a plurality of repetitions of the D2D data transmission resource bitmap are associated with the duration associated with the D2D data transmission resource bitmap; and
the pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap has a repetitive pattern in the duration associated with the D2D data transmission resource bitmap in accordance with the plurality of repetitions of the D2D data transmission resource bitmap.
24. The UE of claim 19 , wherein:
the D2D data allocation period is repeated a plurality of times in a time axis; and
in each D2D data allocation period, the D2D data transmission resource offset precedes the duration associated with a D2D data transmission resource bitmap.