Enhanced timing advanced filtering
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJonas Kronander, Magnus Stattin
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Abstract
A method implemented in a User Equipment, UE, for a cellular communication system includes transmitting a Random Access (RA) preamble and receiving a Random Access Response (RAR) from a base station (BS) containing a timing advance value, TA, indicative of a radio signal propagation delay between the UE and the BS and information indicative of an added time delay, TF, between reception of the RA preamble by the BS and transmission of the RAR by the BS.
Claims10
A method implemented in a User Equipment, UE, for a cellular communication system, the method comprising:
- transmitting a Random Access, RA, preamble;
- receiving a Random Access Response, RAR, from a base station, BS, containing information indicative of an added time delay TF between reception of the RA preamble by the BS and transmission of the RAR by the BS, the information indicative of the TF between the reception of the RA preamble by the BS and the transmission of the RAR by the BS comprising a value that corresponds to the TF, and the RAR further comprising a timing advance, TA, value indicative of a radio signal propagation delay between the UE and the BS;
- determining a reference time, TR, value indicative of a time between transmitting the RA preamble and receiving the RAR;
- determining a value, TERR, that is an absolute value of a difference between the TR value and a sum of the TA value and the TF value;
- and
- determining that the RAR is not intended for the UE in response to determining that the TERR is greater than a predetermined threshold, TTHRESHOLD.
A User Equipment, UE, for a cellular communication system, the UE configured to:
- transmit a Random Access, RA, preamble;
- receive a Random Access Response, RAR, from a base station, BS, containing information indicative of an added time delay, TF, between reception of the RA preamble by the BS and transmission of the RAR by the BS, the information indicative of the TF between the reception of the RA preamble by the BS and the transmission of the RAR by the BS comprising a value that corresponds to the TF, and the RAR further comprising a timing advance, TA, value indicative of a radio signal propagation delay between the UE and the BS;
- determine a reference time, TR, value indicative of a time between transmitting the RA preamble and receiving the RAR;
- determine a value, TERR, that is an absolute value of a difference between the TR value and a sum of the TA value and the TF value;
- and
- determine that the RAR is not intended for the UE in response to determining that the TERR is greater than a predetermined threshold, TTHRESHOLD.
Dependencies are inferred from the claim text.