Mobility information reporting

Abstract

Technology for reporting mobility information is disclosed. Mobility information can be identified for the UE when the UE is in idle mode, the mobility information including a visited cell history for the UE when the UE is in idle mode. An evolved node B (eNB) can be notified that the mobility information for the UE is available when the UE transitions from the idle mode to a connected mode. A request can be received from the eNB for the mobility information. The mobility information can be sent to the eNB using a reduced number of bits to represent the mobility information while substantially maintaining a level of accuracy of a mobility state estimation for the UE, wherein the mobility state estimation is performed at the eNB in order to determine an estimated speed of the UE.

What is claimed is: 
     
         1 - 21 . (canceled) 
     
     
         22 . At least one non-transitory machine readable storage medium having instructions embodied thereon for reporting mobility history information, the instructions when executed perform the following:
 saving, using at least one processor, mobility history information at a user equipment (UE), the mobility history information comprising a visited cell history that includes:
 an Evolved Universal Terrestrial Access (EUTRA) global cell identifier (ID) or a physical cell ID for one or more visited cells by the UE that are included in the visited cell history; and 
 a duration of stay of the UE in the one or more visited cells that are included in the visited cell history; and 
   reporting, using the at least one processor, the mobility history information in a visited cell information element (IE) from the UE to an evolved node B (eNB).   
     
     
         23 . The at least one non-transitory machine readable storage medium of  claim 22 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) idle mode. 
     
     
         24 . The at least one non-transitory machine readable storage medium of  claim 22 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) connected mode. 
     
     
         25 . The at least one non-transitory machine readable storage medium of  claim 22 , wherein the visited cell history in the mobility history information includes the duration of stay and one or more of the EUTRA global cell ID or the physical cell ID for up to 16 visited cells by the UE. 
     
     
         26 . The at least one non-transitory machine readable storage medium of  claim 22 , wherein the duration of stay of the UE in each visited cell in the visited cell history is between 0 seconds and 4095 seconds. 
     
     
         27 . The at least one non-transitory machine readable storage medium of  claim 22 , further comprising instructions which when executed by the at least one processor performs the following:
 identifying that the duration of stay in a visited cell is greater than 4095 seconds; and   setting the duration of stay for the visited cell in the visited cell IE to 4095 seconds.   
     
     
         28 . The at least one non-transitory machine readable storage medium of  claim 22 , wherein the UE includes an antenna, a touch sensitive display screen, a speaker, a microphone, a graphics processor, an application processor, an internal memory, or a non-volatile memory port. 
     
     
         29 . A user equipment (UE) operable to report mobility history information, the UE comprising one or more processors configured to:
 save mobility history information at the UE, the mobility history information comprising a visited cell history that includes an Evolved Universal Terrestrial Access (EUTRA) global cell identifier (ID) or a physical cell ID for one or more visited cells by the UE that are included in the visited cell history, the visited cell history including a duration of stay of the UE in the one or more visited cells that are included in the visited cell history; and   report a visited cell information element (IE) containing the mobility history information to an evolved node B (eNB).   
     
     
         30 . The UE of  claim 29 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) idle mode. 
     
     
         31 . The UE of  claim 29 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) connected mode. 
     
     
         32 . The UE of  claim 29 , wherein the visited cell history in the mobility history information includes the duration of stay and one or more of the EUTRA global cell ID or the physical cell ID for up to 16 visited cells by the UE. 
     
     
         33 . The UE of  claim 29 , wherein the duration of stay of the UE in a visited cell in the visited cell history is between 0 seconds and 4095 seconds. 
     
     
         34 . The UE of  claim 29 , wherein the one or more processors are further configured to:
 identify that the duration of stay in a visited cell is greater than 4095 seconds; and   set the duration of stay for the visited cell in the visited cell IE to 4095 seconds.   
     
     
         35 . The UE of  claim 29 , wherein the UE includes an antenna, a touch sensitive display screen, a speaker, a microphone, a graphics processor, an application processor, an internal memory, or a non-volatile memory port. 
     
     
         36 . A system for reporting mobility history information, the system comprising:
 a processing module configured to:
 collect mobility history information at a user equipment (UE), the mobility history information comprising a visited cell history that includes:
 an Evolved Universal Terrestrial Access (EUTRA) global cell identifier (ID) or a physical cell ID for each visited cell by the UE that is included in the visited cell history; and 
 a duration of stay of the UE in each visited cell that is included in the visited cell history; and 
 
 store the mobility history information in a visited cell information element (IE) at the UE, wherein the processing module is stored in a digital memory device or is implemented in a hardware circuit; and 
   a transceiver module configured to report the visited cell IE containing the mobility history information from the UE to an evolved node B (eNB), the eNB performing a handover decision using the mobility history information, wherein the transceiver module is stored in a digital memory device or is implemented in a hardware circuit.   
     
     
         37 . The system of  claim 36 , wherein the processing module is further configured to collect the mobility history information for the UE when the UE is in a radio resource control (RRC) idle mode. 
     
     
         38 . The system of  claim 36 , wherein the processing module is further configured to collect the mobility history information for the UE when the UE is in a radio resource control (RRC) connected mode. 
     
     
         39 . The system of  claim 36 , wherein the visited cell history in the mobility history information includes the duration of stay and one or more of the EUTRA global cell ID or the physical cell ID for up to 16 visited cells by the UE. 
     
     
         40 . The system of  claim 36 , wherein the duration of stay of the UE in each visited cell in the visited cell history is between 0 seconds and 4095 seconds. 
     
     
         41 . The system of  claim 36 , wherein the processing module is further configured to:
 identify that the duration of stay in a visited cell is greater than 4095 seconds; and   set the duration of stay for the visited cell in the visited cell IE to 4095 seconds.   
     
     
         42 . An evolved node B (eNB) operable to receive mobility history information from a user equipment (UE), the eNB comprising one or more processors configured to:
 receive a visited cell information element (IE) from the UE, the visited cell IE including mobility history information for the UE,   wherein the mobility history information comprises a visited cell history that includes an Evolved Universal Terrestrial Access (EUTRA) global cell identifier (ID) or physical cell ID for one or more visited cells by the UE that are included in the visited cell history, the visited cell history including a duration of stay of the UE in the one or more visited cells that are included in the visited cell history.   
     
     
         43 . The eNB of  claim 42 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) idle mode. 
     
     
         44 . The eNB of  claim 42 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) connected mode. 
     
     
         45 . The eNB of  claim 42 , wherein the visited cell history in the mobility history information includes the duration of stay and one or more of the EUTRA global cell ID or the physical cell ID for up to 16 visited cells by the UE. 
     
     
         46 . The eNB of  claim 42 , wherein the duration of stay of the UE in a visited cell in the visited cell history is between 0 seconds and 4095 seconds. 
     
     
         47 . At least one non-transitory machine readable storage medium having instructions embodied thereon for receiving mobility history information from a user equipment (UE), the instructions when executed perform the following:
 receiving a visited cell information element (IE) from the UE, the visited cell IE including mobility history information for the UE,   wherein the mobility history information comprises a visited cell history that includes an Evolved Universal Terrestrial Access (EUTRA) global cell identifier (ID) or a physical cell ID for one or more visited cells by the UE that are included in the visited cell history, the visited cell history including a duration of stay of the UE in the one or more visited cells that are included in the visited cell history.   
     
     
         48 . The at least one non-transitory machine readable storage medium of  claim 47 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) idle mode. 
     
     
         49 . The at least one non-transitory machine readable storage medium of  claim 47 , wherein the mobility history information includes the visited cell history for the UE when the UE is in a radio resource control (RRC) connected mode. 
     
     
         50 . The at least one non-transitory machine readable storage medium of  claim 47 , wherein the visited cell history in the mobility history information includes the duration of stay and one or more of the EUTRA global cell ID or the physical cell ID for up to 16 visited cells by the UE. 
     
     
         51 . The at least one non-transitory machine readable storage medium of  claim 47 , wherein the duration of stay of the UE in a visited cell in the visited cell history is between 0 seconds and 4095 seconds.