Terminal-to-terminal communication

1. A method of performing a terminal-to-terminal communication, the method comprising:

receiving, at a first terminal, a resource allocation identifying resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery;

performing, at the first terminal, a terminal-to-terminal transmission via the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery, the terminal-to-terminal transmission configured to be received directly from the first terminal by a receiving terminal;

checking, at the first terminal, for an acknowledgement sequence; and

checking, at the first terminal, for a negative acknowledgement sequence.

2. The method of claim 1 , wherein the terminal-to-terminal transmission includes a session number and the acknowledgement sequence includes the session number.

3. The method of claim 1 , wherein transmitting the terminal-to-terminal transmission occurs via at least one of the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery.

4. The method of claim 1 , wherein the resources allocated for terminal-to-terminal transmission without prior terminal-to-terminal discovery include terminal-to-terminal acknowledgement resources implicitly allocated with the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery.

5. The method of claim 4 , wherein checking for the acknowledgement sequence and checking for the negative acknowledgement sequence includes monitoring at least one of the terminal-to-terminal acknowledgement resources.

6. The method of claim 1 , further comprising:

failing to receive the acknowledgement sequence;

failing to receive the negative acknowledgement sequence; and

canceling a future terminal-to-terminal transmission.

7. The method of claim 1 , further comprising:

receiving the acknowledgement sequence; and

transmitting a second terminal-to-terminal transmission without performing terminal-to-terminal discovery, the second terminal-to-terminal transmission transmitted with initial transmission parameters,

wherein the terminal-to-terminal transmission is transmitted with the initial transmission parameters.

8. The method of claim 1 , further comprising:

receiving the negative acknowledgement sequence; and

transmitting a second terminal-to-terminal transmission without performing terminal-to-terminal discovery, the second terminal-to-terminal transmission transmitted with changed transmission parameters,

wherein the terminal-to-terminal transmission is transmitted with initial transmission parameters different from the changed transmission parameters.

9. A terminal including a non-transitory computer-readable medium having encoded therein programming code executable by a processor to perform operations comprising:

receiving a resource allocation identifying resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery;

performing a terminal-to-terminal transmission via the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery, the terminal-to-terminal transmission configured to be received directly from the terminal by another terminal;

checking for an acknowledgement sequence; and

checking for a negative acknowledgement sequence.

10. The terminal of claim 9 , wherein the terminal-to-terminal transmission includes a session number and the acknowledgement sequence includes the session number.

11. The terminal of claim 9 , wherein transmitting the terminal-to-terminal transmission occurs via at least one of the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery.

12. The terminal of claim 9 , wherein the resources allocated for terminal-to-terminal transmission without prior terminal-to-terminal discovery include terminal-to-terminal acknowledgement resources implicitly allocated with the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery.

13. The terminal of claim 12 , wherein checking for the acknowledgement sequence and checking for the negative acknowledgement sequence includes monitoring at least one of the terminal-to-terminal acknowledgement resources.

14. The terminal of claim 9 , the operations further comprising:

failing to receive the acknowledgement sequence;

failing to receive the negative acknowledgement sequence; and

canceling a future terminal-to-terminal transmission.

15. The terminal of claim 9 , the operations further comprising:

receiving the acknowledgement sequence; and

transmitting a second terminal-to-terminal transmission without performing terminal-to-terminal discovery, the second terminal-to-terminal transmission transmitted with initial transmission parameters,

wherein the terminal-to-terminal transmission is transmitted with the initial transmission parameters.

16. The terminal of claim 9 , the operations further comprising:

receiving the negative acknowledgement sequence; and

transmitting a second terminal-to-terminal transmission without performing terminal-to-terminal discovery, the second terminal-to-terminal transmission transmitted with changed transmission parameters,

wherein the terminal-to-terminal transmission is transmitted with initial transmission parameters different from the changed transmission parameters.

17. A method of performing terminal-to-terminal communication without terminal-to-terminal discovery, the method comprising:

receiving, at a first terminal, a resource allocation identifying resources of a radio spectrum licensed for transmission of wireless data, the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery, the resources allocated for terminal-to-terminal transmissions including implicitly allocated terminal-to-terminal acknowledgement resources;

performing, at the first terminal, a plurality of terminal-to-terminal transmissions via the resources allocated for terminal-to-terminal transmissions without prior terminal-to-terminal discovery, the plurality of terminal-to-terminal transmissions configured to be received directly from the first terminal by a receiving terminal; and

monitoring the terminal-to-terminal acknowledgment resources, including checking, at the first terminal, for both an acknowledgement sequence and a negative acknowledgement sequence after transmitting each terminal-to-terminal transmission of the plurality of terminal-to-terminal transmissions.

18. The method of claim 17 , further comprising:

failing to receive the acknowledgement sequence after each of the plurality of terminal-to-terminal transmissions;

failing to receive the negative acknowledgement sequence after each of the plurality of terminal-to-terminal transmissions; and

canceling a future terminal-to-terminal transmission.