Inter-RAT mobility of in-device coexistence
First Claim
1. A method performed by a user equipment (UE) for management of evolved UMTS Terrestrial Radio Access Network (E-UTRAN) handover, the method comprising:
- performing measurements, at the UE, to determine in-device coexistence (IDC) interference occurring with radio communications of the E-UTRAN; and
transmitting an indication of the IDC interference to a radio access network;
wherein a UMTS Terrestrial Radio Access Network (UTRAN) or a GSM EDGE Radio Access Network (GERAN) refrains from performing a handover from the UTRAN or the GERAN to the E-UTRAN in response to the indication of the IDC interference.
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Accused Products
Abstract
Embodiments of system, device, and method configurations for managing inter-radio access technology (inter-RAT) mobility of handovers between a UMTS Terrestrial Radio Access Network (UTRAN) or GSM EDGE Radio Access Network (GERAN) and an evolved UMTS Terrestrial Radio Access Network (E-UTRAN) to avoid scenarios of in-device coexistence (IDC) interference are disclosed herein. In one example, the existence and types of IDC interference with an E-UTRAN Long Term Evolution (LTE)/Long Term Evolution-Advanced (LTE-A) network are determined and communicated to the UTRAN/GERAN in an IDC indication signal. The IDC indication signal may communicate the existence and type of IDC interference occurring at user equipment, such as between licensed LTE/LTE-A and unlicensed industrial scientific medical (ISM) radio frequency bands. Accordingly, the UTRAN/GERAN may use information provided from the IDC indication signal to prevent a handover to the E-UTRAN that would result in IDC interference.
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Citations
25 Claims
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1. A method performed by a user equipment (UE) for management of evolved UMTS Terrestrial Radio Access Network (E-UTRAN) handover, the method comprising:
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performing measurements, at the UE, to determine in-device coexistence (IDC) interference occurring with radio communications of the E-UTRAN; and transmitting an indication of the IDC interference to a radio access network; wherein a UMTS Terrestrial Radio Access Network (UTRAN) or a GSM EDGE Radio Access Network (GERAN) refrains from performing a handover from the UTRAN or the GERAN to the E-UTRAN in response to the indication of the IDC interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A user equipment (UE), comprising:
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circuitry arranged to perform radio communications in an industrial, scientific and medical (ISM) radio frequency band; and circuitry arranged to perform radio access network (RAN) radio communications with an UMTS Terrestrial Radio Access Network (UTRAN) or GSM EDGE Radio Access Network (GERAN) and an evolved UMTS Terrestrial Radio Access Network (E-UTRAN), the circuitry further arranged to facilitate handover management of the UE between the E-UTRAN and the UTRAN or GERAN, with operations to; measure in-device coexistence (IDC) interference occurring between radio communications of the E-UTRAN and the radio communications in the ISM radio frequency band; and transmit an indication of the IDC interference to the UTRAN or the GERAN; wherein handover of the UE from the UTRAN or the GERAN to the E-UTRAN is avoided in response to the indication of the IDC interference. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method performed by a radio access network (RAN) for management of handover of a user equipment (UE) to an evolved UMTS Terrestrial Radio Access Network (E-UTRAN) based on in-device coexistence (IDC) interference conditions at the UE, comprising:
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receiving, at the RAN from the UE, an indication of IDC interference of radio communications exchanged with the E-UTRAN; and preventing handover of the UE from the RAN to the E-UTRAN in response to the indication of the IDC interference. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification