Method and system for determining sounding reference signal frequency hopping pattern

A device for determining a sounding reference signal frequency hopping pattern, comprising:

• a first unit, configured to:
• construct a parent table, wherein the constructed parent table contains a plurality of child tables, wherein, each value combination of an SRS bandwidth configuration parameter (CSRS) and a calculated SRS frequency-domain position index n′RRC corresponds to a child table;
• a second unit, configured to:
• determine an SRS frequency-domain reference position p according to a system uplink bandwidth NRBUL, the SRS bandwidth configuration parameter CSRS, an SRS frequency-domain position index nRRC and an SRS frequency hopping bandwidth parameter bhop distributed by an eNodeB;
• a third unit, configured to:
• calculate another n′RRC according to the system uplink bandwidth NRBUL, the SRS bandwidth configuration parameter CSRS distributed by the eNodeB, and based on the SRS frequency-domain position index nRRC, select a child table from the constructed parent table according to the obtained n′RRC;
• and look up the selected child table to obtain an SRS frequency hopping frequency-domain position offset q by taking n′SRS=(nSRS mod P)·S as an index according to an SRS transmission occasion counter nSRS and based on the selected child table in each SRS frequency hopping period according to the SRS frequency hopping bandwidth parameter bhop and an SRS bandwidth parameter BSRS distributed by the eNodeB;
• add the SRS frequency-domain reference position p and the SRS frequency hopping frequency-domain position offset q to obtain a current SRS transmission frequency-domain position r=p+q;
• calculate an SRS transmission frequency-domain subcarrier offset k0 according to the current SRS transmission frequency-domain position r, and repeat the above-mentioned processing steps for P times within one SRS frequency hopping period to obtain an SRS frequency hopping pattern, wherein, a value of P is determined based on bhop and BSRS together, and S is a step length related to bhop.

A method for determining a sounding reference signal (SRS) frequency hopping pattern, comprising the following steps:

• a user equipment (UE) constructing a parent table, wherein the constructed parent table contains a plurality of child tables;
• the UE determining an SRS frequency-domain reference position p according to a system uplink bandwidth NRBUL, and an SRS bandwidth configuration parameter CSRS and an SRS frequency-domain position index nRRC distributed by an eNodeB;
• the UE selecting a child table from the constructed parent table according to the system uplink bandwidth NRBUL, and the SRS bandwidth configuration parameter CSRS distributed by the eNodeB;
• the UE looking up the elected child table to obtain an SRS frequency hopping frequency-domain position offset q by taking n′SRS=(nSRS mod P)·S as an index, according to an SRS transmission occasion counter nSRS and based on the selected child table, in each SRS frequency hopping period, according to the SRS frequency hopping bandwidth parameter bhop and an SRS bandwidth parameter BSRS distributed by the eNodeB;
• adding the SRS frequency-domain reference position p and the SRS frequency hopping frequency-domain position offset q to obtain a current SRS transmission frequency-domain position r=p+q;
• calculating an SRS transmission frequency-domain subcarrier offset k0 according to the current SRS transmission frequency-domain position r,
• repeating the above-mentioned processing steps for P times within one SRS frequency hopping period to obtain an SRS frequency hopping pattern, wherein, a value of P is determined based on bhop and BSRS together, and S is a step length related to bhop.

A device for determining a sounding reference signal (SRS) frequency hopping pattern, comprising:

• a first unit, configured to:
• construct a parent table, wherein the constructed parent table contains a plurality of child tables;
• a second unit, configured to:
• determine an SRS frequency-domain reference position p according to a system uplink bandwidth NRBUL, and an SRS bandwidth configuration parameter CSRS and an SRS frequency-domain position index nRRC distributed by an eNodeB;
• a third unit, configured to:
• select a child table from the parent table according to the system uplink bandwidth NRBUL and the SRS bandwidth configuration parameter CSRS distributed by the eNodeB, and look up the selected child table to obtain an SRS frequency hopping frequency-domain position offset q by taking n′SRS=(nSRS mod P)·S as an index according to an SRS transmission occasion counter nSRS and based on the selected child table in each SRS frequency hopping period according to the SRS frequency hopping bandwidth parameter bhop and an SRS bandwidth parameter BSRS distributed by the eNodeB;
• add the SRS frequency-domain reference position p and the SRS frequency hopping frequency-domain position offset q to obtain a current SRS transmission frequency-domain position r=p+q, calculate an SRS transmission frequency-domain subcarrier offset k0 according to the current SRS transmission frequency-domain position r, and repeat the above-mentioned processing steps for P times within one SRS frequency hopping period to obtain an SRS frequency hopping pattern, wherein, a value of P is determined based on bhop and BSRS together, and S is a step length related to bhop.