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 comprising:
receiving, by a user equipment (UE) and from an evolved NodeB (eNB), configuration information associated with a device-to-device (D2D) data transmission resource, the configuration information comprising information of a D2D data allocation period;
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 having bit value 1 and at least one bit having bit value 0;
determining, based on a length of the duration and based on a length of the D2D data transmission resource bitmap, a quantity of repetition of the D2D data transmission resource bitmap;
determining, based on the repetition of the D2D data transmission resource bitmap, a pool of subframes in the duration associated with the D2D data transmission resource bitmap, the pool of subframes corresponding to D2D data transmission resources; and
transmitting, from the UE and based on the pool of subframes, D2D data,
wherein the pool of subframes is associated with the bit value 1 of the D2D data transmission resource bitmap and has a repetitive pattern in the duration associated with the D2D data transmission resource bitmap.
2. The method of claim 1 , further comprising:
receiving, by the UE and from the eNB, information of the D2D data transmission resource offset and information of the D2D data transmission resource bitmap.
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:
the repetition of the D2D data transmission resource bitmap is associated with 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 quantity 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) comprising:
a wireless transceiver configured to:
receive, from an evolved NodeB (eNB), configuration information associated with a device-to-device (D2D) data transmission resource, the configuration information comprising information of a D2D data allocation period; 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 having bit value 1 and at least one bit having bit value 0;
determine, based on a length of the duration and based on a length of the D2D data transmission resource bitmap, a quantity of repetition of the D2D data transmission resource bitmap,
determine, based on the repetition of the D2D data transmission resource bitmap, a pool of subframes in the duration associated with the D2D data transmission resource bitmap, the pool of subframes corresponding to D2D data transmission resources; and
transmit, based on the pool of subframes, D2D data,
wherein the pool of subframes is associated with the bit value 1 of the D2D data transmission resource bitmap and has a repetitive pattern in the duration associated with the D2D data transmission resource bitmap.
8. The UE of claim 7 , wherein the wireless transceiver is configured to receive, from the eNB, information of the D2D data transmission resource offset and information of the D2D data transmission resource bitmap.
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:
the repetition of the D2D data transmission resource bitmap is associated with 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 quanitty 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 comprising:
receiving, by a user equipment (UE) and from an evolved NodeB (eNB), configuration information associated with a device-to-device (D2D) data transmission resource, the configuration information comprising information of a D2D data allocation period;
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 having bit value 1;
determining, based on a length of the duration and based on a length of the D2D data transmission resource bitmap, a quantity of repetition of the D2D data transmission resource bitmap;
determining, based on the repetition of the D2D data transmission resource bitmap, a pool of subframes associated with 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, and the pool of subframes corresponding to D2D data transmission resources; and
transmitting, from the UE and based on the pool of subframes, D2D data,
wherein the D2D data transmission resource offset is indicated as a quantity of subframes.
14. The method of claim 13 , further comprising:
receiving, by the UE and from the eNB, information of the D2D data transmission resource offset and information of the D2D data transmission resource bitmap.
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:
the repetition of the D2D data transmission resource bitmap is associated with uplink subframes in the duration associated with the D2D data transmission resource bitmap.
17. The method of claim 13 , wherein:
the pool of subframes is associated with the bit value 1 of the D2D data transmission resource bitmap and has a repetitive pattern in the duration associated with 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.