Method for transmitting enhanced random access sequence and machine type communication terminal

1. An enhanced random access sequence transmitting method, comprising:

a node 1 generating an enhanced random access sequence according to a random access sequence and an enhanced configuration information, and the node 1 sending the enhanced random access sequence on an enhanced random access channel;

wherein, the enhanced configuration information comprises at least one of the following: an arrangement mode information of the random access sequence, and a resource allocation information of the enhanced random access channel;

wherein, the resource allocation information of the enhanced random access channel comprises at least one of the following: initial subframe index of the enhanced random access channel being n, and a resource allocation interval being m subframes; and

when the resource allocation interval m is indicated by the index information of the random access sequence, the method comprises: the random access sequence being taken from a determined random access sequence set, wherein the determined random access sequence set corresponds to the resource allocation interval m.

2. The transmitting method of claim 1 , wherein,

the arrangement mode information of the random access sequence comprises one of the following information:

repeatedly arranging the random access sequence for K times to constitute into the enhanced random access sequence, wherein K is an integer greater than 0;

generating L derived random access sequences based on the random access sequence according to a predetermined principle, wherein L is an integer greater than 0, arranging the random access sequence and the derived random access sequences in accordance with a predetermined order to constitute into a random access long sequence, repeatedly arranging the random access long sequence for T times to constitute into the enhanced random access sequence, wherein, T is an integer greater than 0.

3. The transmitting method of claim 2 , wherein,

a number of the random access sequence is one or more, which is preselected by the node 1 .

4. The transmitting method of claim 3 , wherein,

sequence lengths of different random access sequences are different.

5. The transmitting method of claim 1 , wherein,

the resource allocation interval m belongs to a resource allocation interval set M, an index value of the resource allocation interval m in the resource allocation interval set M is configured in the node 1 and a node 2 by default, or sent by the node 2 to the node 1 via a signaling in advance, or indicated by an index information of the random access sequence.

6. The transmitting method of claim 1 , wherein,

when a resource location subframe determined by the node 1 according to the resource allocation information of the enhanced random access channel is a downlink subframe, the resource location subframe is changed to a previous or next uplink subframe closest to the downlink subframe.

7. The transmitting method of claim 1 , wherein,

the resource allocation information of the enhanced random access channel comprises: sending the enhanced random access sequence on a frame identified as e+q*p, wherein, e is an initial frame index of a resource of the enhanced random access channel, p is resource allocation interval, and q=0, 1, . . . , k Frame , wherein k Frame is a total number of frames occupied by the enhanced random access channel.

8. The transmitting method of claim 7 , wherein,

a subframe index occupied by the enhanced random access channel in one frame is configured by a node 2 and sent to the node 1 or configured and stored in both the node 1 and the node 2 by default.

9. The transmitting method of claim 7 , wherein,

a value of the resource allocation interval p belongs to a resource allocation interval set P, an index of the value of the resource allocation interval p in the resource allocation interval set P is configured in the node 1 and a node 2 by default, or sent by the node 2 to the node 1 through a signaling in advance, or indicated by index information of the random access sequence.

10. The transmitting method of claim 7 , wherein,

when the resource allocation interval p is indicated by index information of the random access sequence, comprising: the random access sequence being taken from a determined random access sequence set, and the determined random access sequence set corresponds to the resource allocation interval p.

11. The transmitting method of claim 1 , wherein,

a node 2 detects the enhanced random access sequence sent by the node 1 on the enhanced random access channel according to the enhanced configuration information.

12. The transmitting method of claim 11 , wherein,

the node 1 is a machine type communication terminal or a non-machine type communication terminal;

the node 2 is one of a MacroCell, a MicroCell, a PicoCell, a Femtocell, and a Relay.

13. A machine type communication terminal, wherein,

the machine type communication terminal comprises an enhanced random access sequence generation module and an enhanced random access sequence transmission module;

the enhanced random access sequence generation module is configured to: generate an enhanced random access sequence according to a random access sequence and an enhanced configuration information;

the enhanced random access sequence transmission module is configured to: transmit the enhanced random access sequence on an enhanced random access channel;

wherein,

the enhanced configuration information comprises resource allocation information of the enhanced random access channel; the resource allocation information comprises at least one of the following: an initial subframe index of the enhanced random access channel being n, and resource allocation interval being m subframes;

wherein, when the resource allocation interval m is indicated by the index information of the random access sequence, the random access sequence is taken from a determined random access sequence set, wherein the determined random access sequence set corresponds to the resource allocation interval m.

14. The machine type communication terminal of claim 13 , wherein,

the enhanced configuration information comprises arrangement mode information of the random access sequence;

the enhanced random access sequence generation module is configured to: repeatedly arrange the random access sequence for K times according to the arrangement mode information to constitute into the enhanced random access sequence, wherein K is an integer greater than 0; or; generate L derived random access sequences based on the random access sequence according to a predetermined principle, wherein L is an integer greater than 0, and arrange the random access sequence and the derived random access sequences according to a predetermined order to constitute into a random access long sequence, and repeatedly arrange the random access long sequence for T times to constitute into the enhanced random access sequence, wherein, T is an integer greater than zero.

15. The machine type communication terminal of claim 14 , wherein,

the enhanced configuration information comprises resource allocation information of the enhanced random access channel; the resource allocation information comprises at least one of the following: an initial subframe index of the enhanced random access channel being n, and resource allocation interval being m subframes;

the enhanced random access sequence transmission module is configured to: determine resources for transmitting the enhanced random access sequence in an enhanced random access channel based on the resource allocation information of the enhanced random access channel; obtain an index of a value of the resource allocation interval m in a resource allocation interval set M from a default configuration or from a node other than the machine type communication terminal.

16. The machine type communication terminal of claim 13 , wherein,

the enhanced random access sequence transmission module is configured to: determine resources for transmitting the enhanced random access sequence in an enhanced random access channel based on the resource allocation information of the enhanced random access channel; obtain an index of a value of the resource allocation interval m in a resource allocation interval set M from a default configuration or from a node other than the machine type communication terminal.

17. The machine type communication terminal of claim 13 , wherein,

the resource allocation information of the enhanced random access channel comprises: transmitting the enhanced random access sequence on a frame identified as e+q*p, wherein, e is an initial frame index of a resource of the enhanced random access channel, p is resource allocation interval, and q=0, 1, . . . , k Frame , wherein k Frame is a total number of frames occupied by the enhanced random access channel;

the enhanced random access sequence transmission module is configured to: determine resources used by the enhanced random access channel for transmitting the enhanced random access sequence according to the resource allocation information of the enhanced random access channel; obtain the index of the resource allocation interval p in the resource allocation interval set P from the default configuration or from a node other than the machine type communication terminal.