Procedure for formulating a signal to interference plus noise ratio
AssigneeBlackBerry Limited
InventorsChandra Sekhar Bontu, Mo-Han Fong, Zhijun Cai, Yi Yu, Yi Song, Rose Qingyang Hu
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Abstract
A method and system for formulating an SINK metric for cells using only the existing RSRP and RSRQ measurements. With this method and system side information is exchanged between eNBs of an E-UTRAN using the X2 interface where the X2 interface carries the X2 Application Protocol (X2AP). The side information is introduced either within X2AP messages exchanged between eNB nodes or via modification of existing X2AP messages. Serving cell system information block (SIB) messages may also be modified or new SIB messages introduced to facilitate computation of an SNIR metric at a UE.
Claims20
A method, comprising:
- determining, at a user equipment (UE), a reference symbol receive power (RSRP) value for each of a plurality of evolved universal terrestrial radio access network (E-UTRAN) node Bs (eNBs);
- determining, at the UE, a reference symbol receive quality (RSRQ) value for each of the plurality of eNBs;
- receiving, at the UE, side information for each of the plurality of eNBs;
- calculating, by the UE, a signal to interference plus noise ratio (SINR) for each of the plurality of eNBs based on the side information, the RSRP value and the RSRQ value;
- and
- selecting, by the UE, a target eNB from the plurality of eNBs to camp on based on the calculated SINR for each of the plurality eNBs.
A user equipment (UE), comprising:
- a memory;
- and
- at least one hardware processor communicatively coupled with the memory and configured to:
- determine, at the UE, a reference symbol receive power (RSRP) value for each of a plurality of evolved universal terrestrial radio access network (E-UTRAN) node Bs (eNBs);
- determine, at the UE, a reference symbol receive quality (RSRQ) value for each of the plurality of eNBs;
- receive, at the UE, side information for each of the plurality of eNBs;
- calculate, at the UE, a signal to interference plus noise ratio (SINR) for each of the plurality of eNBs based on the side information, the RSRP value and the RSRQ value;
- and
- select, by the UE, a target eNB from the plurality of eNBs to camp on based on the calculated SINR for each of the plurality eNBs.
A non-transitory computer-readable medium containing instructions which, when executed, cause a user equipment (UE) to perform operations comprising:
- determining, at the UE, a reference symbol receive power (RSRP) value for each of a plurality of evolved universal terrestrial radio access network (E-UTRAN) node Bs (eNBs);
- determining, at the UE, a reference symbol receive quality (RSRQ) value for each of the plurality of eNBs;
- receiving, at the UE, side information for each of the plurality of eNBs;
- calculating, at the UE, a signal to interference plus noise ratio (SINK) for each of the plurality of eNBs based on the side information, the RSRP value and the RSRQ value;
- and
- selecting, by the UE, a target eNB from the plurality of eNBs to camp on based on the calculated SINR for each of the plurality eNBs.
Dependencies are inferred from the claim text.