Mobile terminal and mobile state reporting method thereof

1. A method for reporting a mobility state of a mobile terminal comprising:

A User Equipment (UE) in an idle state evaluating its own mobility state based on a first evaluation parameter sent by an evolved Node B (eNodeB) through system broadcast before the UE enters into a Radio Resource Control (RRC) connection state, and obtaining an evaluated first determination result; and

the UE reporting the first determination result to the eNodeB through a RRC connection setup complete message during setting up a RRC connection;

wherein the UE evaluating its own mobility state based on the first evaluation parameter and obtaining the first determination result comprises:

the UE obtaining a number of times for the UE to change cells in preset time periods of T CRmax of a third timer and T CRmaxHyst of a fourth timer, respectively, and comparing the obtained number of times with a preset second lower limit time N CR M and second upper limit time N CR H ;

when the number of times for the UE to change cells in the time period of T CRmax is greater than the N CR M and less than or equal to the N CR H , determining that the UE is in a medium speed mobility state;

when the number of times for the UE to change cells in the time period of T CRmax is greater than the N CR H , determining that the UE is in a high speed mobility state; and

when the number of times for the UE to change cells in the time period of T CRmaxHyst is less than or equal to the N CR M , determining that the UE is in a normal mobility state.

2. The method according to claim 1 , further comprising: the UE carrying the first determination result by a new added information element Mobilitystate in the RRC connection setup complete message, wherein:

when the first determination result obtained by last evaluation is the high speed mobility state, then the Mobilitystate is set to be High;

when the first determination result obtained by last evaluation is the medium speed mobility state, then the Mobilitystate is set to be Medium; and

when the first determination result obtained by last evaluation is the normal mobility state, then the Mobilitystate is set to be Normal.

3. The method according to claim 1 , wherein after the UE reports the determination result to the eNodeB, the method further comprises: the eNodeB adopting different processing strategies for UEs in different mobility states based on the determination result when performing frequency offset correction, resource scheduling, destination cell handover.

4. The method according to claim 1 , further comprising: the UE carrying the first determination result by a new added information element Mobilitystate in the RRC connection setup complete message, wherein:

when the first determination result obtained by last evaluation is the high speed mobility state, then the Mobilitystate is set to be High;

when the first determination result obtained by last evaluation is the medium speed mobility state, then the Mobilitystate is set to be Medium; and

when the first determination result obtained by last evaluation is the normal mobility state, then the Mobilitystate is set to be Normal.

5. The method according to claim 1 , further comprising:

the UE evaluating its own mobility state under the RRC connection state based on a second evaluation parameter sent by the eNodeB, and obtaining an evaluated second determination result; and

the UE reporting the second determination result to the eNodeB through a measurement report message in the RRC connection state.

6. The method according to claim 5 , wherein the UE evaluating its own mobility state based on the second evaluation parameter and obtaining the second determination result comprises:

the UE obtaining the number of times of changing cells in preset time periods of t-Evaluation of a first timer and t-HystNormal of a second timer, respectively, and comparing the obtained number of times with a preset first lower limit times n-CellChangeMedium and first upper limit times n-CellChangeHigh;

when the number of times for the UE to change cells in the time period of t-Evaluation is greater than the n-CellChangeMedium and less than or equal to the n-CellChangeHigh, determining that the UE is in a medium speed mobility state;

when the number of times for the UE to change cells in the time period of t-Evaluation is greater than the n-CellChangeHigh, determining that the UE is in a high speed mobility state; and

when the number of times for the UE to change cells in the time period of t-HystNormal is less than or equal to the n-CellChangeMedium, determining that the UE is in a normal mobility state.

7. The method according to claim 5 , further comprising: the UE carrying the second determination result by a new added information element Mobilitystate in the measurement report message, wherein:

when the first determination result obtained by current evaluation is the high speed mobility state, then the Mobilitystate is set to be High;

when the first determination result obtained by current evaluation is the medium speed mobility state, then the Mobilitystate is set to be Medium; and

when the first determination result obtained by current evaluation is the normal mobility state, then the Mobilitystate is set to be Normal.

8. A mobile terminal comprising:

an evaluating module configured to evaluate a mobility state of the mobile terminal in an idle state based on a first evaluation parameter sent by an eNodeB through system broadcast before the mobile terminal enters into a Radio Resource Control (RRC) connection state and obtain an evaluated first determination result and evaluate the mobility state of the mobile terminal under the RRC connection state based on a second evaluation parameter sent by the eNodeB and obtain an evaluated second determination result; and

a result reporting module configured to report the first determination result to the eNodeB through an RRC connection setup complete message during setting up a RRC connection and report the second determination result to the eNodeB through a measurement report message in the RRC connection state;

wherein the result reporting module is further configured to carry the second determination result by a new added information element Mobilitystate in the measurement report message and carry the first determination result by a new added information element Mobilitystate in the RRC connection setup complete message.

9. The mobile terminal according to claim 8 , wherein the result reporting module is further configured to carry the second determination result by a new added information element Mobilitystate in the measurement report message and carry the first determination result by a new added information element Mobilitystate in the RRC connection setup complete message.

10. The mobile terminal according to claim 8 , wherein the evaluating module is further configured to

obtain the number of times of changing cells in preset time periods of T CRmax of a third timer and T CRmaxHyst of a fourth timer, respectively, and compare the obtained number of times with a preset second lower limit times N CR — M and second upper limit times N CR — H ;

when the number of times to change cells in the time period of T CRmax is greater than the N CR — M and less than or equal to the N CR — H , determining that the mobile terminal is in a medium speed mobility state;

when the number of times to change cells in the time period of T CRmax is greater than the N CR — H , determining that the mobile terminal is in a high speed mobility state; and

when the number of times to change cells in the time period of T CRmaxHyst is less than or equal to the N CR — M , determining that the mobile terminal is in a normal mobility state.