Abstract
A method for determining uplink transmission power in time division duplex system is disclosed: a base station determines the current distribution manner of uplink and downlink sub-frames acquires the frame correspondence information that corresponds to the distribution manner of said uplink and downlink sub-frames selects based on said frame correspondence information downlink sub-frames to transmit to a terminal the power control (TPC) commands that correspond to the uplink sub-frames. Before using the uplink sub-frames to transmit data the terminal determines the current distribution manner of uplink and downlink sub-frames acquires the frame correspondence information that corresponds to the distribution manner of said uplink and downlink sub-frames determines based on the frame correspondence information the downlink sub-frames that are used for transmitting the TPC commands; acquires the TPC commands received by the downlink sub-frames and determines the data transmission power of the uplink sub-frames based on said TPC commands. The present invention also discloses a time division duplex data transmission system and an apparatus therefor. With the present invention a time division duplex system can transmit and receive TPC commands based on the frame correspondence information thereby enabling correct and effective uplink power control performance.
Technologies
Power Control
Product
Use Cases
Wireless communication
Services
Claim
1. A method for determining uplink transmission power in a Time Division Duplex system, comprising:
determining, by a User Equipment, a current uplink and downlink sub-frame allocation mode before transmitting data using an uplink sub-frame, obtaining a sub-frame mapping corresponding to the uplink and downlink sub-frame allocation mode, determining a downlink sub-frame used by a base station for transmitting a Transmission Power Control, TPC, command corresponding to the uplink sub-frame according to the sub-frame mapping, obtaining the TPC command received through the determined downlink sub-frame, and determining power for data transmission via the uplink sub-frame according to the TPC command; wherein, the TPC command corresponding to the uplink sub-frame is transmitted by the base station through the downlink sub-frame after the base station determines the current uplink and downlink sub-frame allocation mode, obtains the sub-frame mapping corresponding to the uplink and downlink sub-frame allocation mode, and determines the downlink sub-frame used for transmitting the TPC command corresponding to the uplink sub-frame according to the sub-frame mapping;
wherein the sub-frame mapping comprises a mapping relationship between an uplink sub-frame and a downlink sub-frame to be used for transmitting a TPC command corresponding to the uplink sub-frame; and
if the mapping relationship between an uplink sub-frame and a downlink sub-frame to be used for transmitting a TPC command corresponding to the uplink sub-frame is a mapping relationship between an identifier of the uplink sub-frame and an identifier of the downlink sub-frame, then determining the downlink sub-frame used for transmitting the TPC command corresponding to the uplink sub-frame according to the sub-frame mapping comprises:
obtaining an identifier of the uplink sub-frame, determining a downlink sub-frame identifier corresponding to the identifier of the uplink sub-frame according to the mapping relationship, and determining a downlink sub-frame corresponding to the downlink sub-frame identifier ahead of the uplink sub-frame as the downlink sub-frame used for transmitting the TPC command.', 'determining, by a User Equipment, a current uplink and downlink sub-frame allocation mode before transmitting data using an uplink sub-frame, obtaining a sub-frame mapping corresponding to the uplink and downlink sub-frame allocation mode, determining a downlink sub-frame used by a base station for transmitting a Transmission Power Control, TPC, command corresponding to the uplink sub-frame according to the sub-frame mapping, obtaining the TPC command received through the determined downlink sub-frame, and determining power for data transmission via the uplink sub-frame according to the TPC command; wherein, the TPC command corresponding to the uplink sub-frame is transmitted by the base station through the downlink sub-frame after the base station determines the current uplink and downlink sub-frame allocation mode, obtains the sub-frame mapping corresponding to the uplink and downlink sub-frame allocation mode, and determines the downlink sub-frame used for transmitting the TPC command corresponding to the uplink sub-frame according to the sub-frame mapping;', 'wherein the sub-frame mapping comprises a mapping relationship between an uplink sub-frame and a downlink sub-frame to be used for transmitting a TPC command corresponding to the uplink sub-frame; and', 'if the mapping relationship between an uplink sub-frame and a downlink sub-frame to be used for transmitting a TPC command corresponding to the uplink sub-frame is a mapping relationship between an identifier of the uplink sub-frame and an identifier of the downlink sub-frame, then determining the downlink sub-frame used for transmitting the TPC command corresponding to the uplink sub-frame according to the sub-frame mapping comprises:', 'obtaining an identifier of the uplink sub-frame, determining a downlink sub-frame identifier corresponding to the identifier of the uplink sub-frame according to the mapping relationship, and determining a downlink sub-frame corresponding to the downlink sub-frame identifier ahead of the uplink sub-frame as the downlink sub-frame used for transmitting the TPC command.
2. The method of claim 1, wherein,
if the mapping relationship between an uplink sub-frame and a downlink sub-frame to be used for transmitting a TPC command corresponding to the uplink sub-frame is a mapping relationship between an identifier of the uplink sub-frame and a value of a delay of TPC controlling the size of which is a time interval between the uplink sub-frame and the downlink sub-frame, then determining the downlink sub-frame used for transmitting the TPC command corresponding to the uplink sub-frame according to the sub-frame mapping comprises:
obtaining an identifier of the uplink sub-frame, determining a value of the delay of TPC controlling corresponding to the identifier of the uplink sub-frame according to the mapping relationship, and determining a downlink sub-frame ahead of the uplink sub-frame by a time interval of a size of the deteimined value of the delay of TPC controlling as the downlink sub-frame used for transmitting the TPC command.', 'if the mapping relationship between an uplink sub-frame and a downlink sub-frame to be used for transmitting a TPC command corresponding to the uplink sub-frame is a mapping relationship between an identifier of the uplink sub-frame and a value of a delay of TPC controlling the size of which is a time interval between the uplink sub-frame and the downlink sub-frame, then determining the downlink sub-frame used for transmitting the TPC command corresponding to the uplink sub-frame according to the sub-frame mapping comprises:
obtaining an identifier of the uplink sub-frame, determining a value of the delay of TPC controlling corresponding to the identifier of the uplink sub-frame according to the mapping relationship, and determining a downlink sub-frame ahead of the uplink sub-frame by a time interval of a size of the deteimined value of the delay of TPC controlling as the downlink sub-frame used for transmitting the TPC command.', 'obtaining an identifier of the uplink sub-frame, determining a value of the delay of TPC controlling corresponding to the identifier of the uplink sub-frame according to the mapping relationship, and determining a downlink sub-frame ahead of the uplink sub-frame by a time interval of a size of the deteimined value of the delay of TPC controlling as the downlink sub-frame used for transmitting the TPC command.
3. The method of claim 2, wherein if a delay caused by the processing of the downlink control signaling by the User Equipment is 3 ms, the mapping relationship between the identifier of the uplink sub-frame and the value of the delay of TPC controlling lies in that:
if an uplink and downlink sub-frame allocation mode 0 is employed, the value of the delay of TPC controlling corresponding to an uplink sub-frame 2 is 6 or 7, the value of the delay of TPC controlling corresponding to an uplink sub-frame 3 is 7, the value of the delay of TPC controlling corresponding to an uplink sub-frame 4 is 4, the value of the delay of TPC controlling corresponding to an uplink sub-frame 7 is 6 or 7, the value of the delay of TPC controlling corresponding to an uplink sub-frame 8 is 7, and the value of the delay of TPC controlling corresponding to an uplink sub-frame 9 is 4;
if an uplink and downlink sub-frame allocation mode 1 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 6, the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 4, the value of the delay of TPC controlling corresponding to the uplink sub-frame 7 is 6, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 8 is 4;
if an uplink and downlink sub-frame allocation mode 2 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 7 is 4;
if an uplink and downlink sub-frame allocation mode 3 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4, the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 4, and value of the delay of TPC controlling corresponding to the uplink sub-frame 4 is 4;
if an uplink and downlink sub-frame allocation mode 4 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 4;
if an uplink and downlink sub-frame allocation mode 5 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4; and
if an uplink and downlink sub-frame allocation mode 6 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 7, the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 7, the value of the delay of TPC controlling corresponding to the uplink sub-frame 4 is 5, the value of the delay of TPC controlling corresponding to the uplink sub-frame 7 is 7, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 8 is 7.', 'if an uplink and downlink sub-frame allocation mode 0 is employed, the value of the delay of TPC controlling corresponding to an uplink sub-frame 2 is 6 or 7, the value of the delay of TPC controlling corresponding to an uplink sub-frame 3 is 7, the value of the delay of TPC controlling corresponding to an uplink sub-frame 4 is 4, the value of the delay of TPC controlling corresponding to an uplink sub-frame 7 is 6 or 7, the value of the delay of TPC controlling corresponding to an uplink sub-frame 8 is 7, and the value of the delay of TPC controlling corresponding to an uplink sub-frame 9 is 4;', 'if an uplink and downlink sub-frame allocation mode 1 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 6, the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 4, the value of the delay of TPC controlling corresponding to the uplink sub-frame 7 is 6, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 8 is 4;', 'if an uplink and downlink sub-frame allocation mode 2 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 7 is 4;', 'if an uplink and downlink sub-frame allocation mode 3 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4, the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 4, and value of the delay of TPC controlling corresponding to the uplink sub-frame 4 is 4;', 'if an uplink and downlink sub-frame allocation mode 4 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 4;', 'if an uplink and downlink sub-frame allocation mode 5 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 4; and', 'if an uplink and downlink sub-frame allocation mode 6 is employed, the value of the delay of TPC controlling corresponding to the uplink sub-frame 2 is 7, the value of the delay of TPC controlling corresponding to the uplink sub-frame 3 is 7, the value of the delay of TPC controlling corresponding to the uplink sub-frame 4 is 5, the value of the delay of TPC controlling corresponding to the uplink sub-frame 7 is 7, and the value of the delay of TPC controlling corresponding to the uplink sub-frame 8 is 7.', "4. The method of claim 3, wherein when the uplink and downlink sub-frame allocation mode 0 is employed, if the uplink sub-frame 2 is a first one of two continuous uplink sub-frames subjected to multiple frame schedule, the value of the TPC downlink controlled delay parameter corresponding to the uplink sub-frame 2 is 6, otherwise, the value of the TPC downlink controlled delay parameter corresponding to the uplink sub-frame 2 is 7; and if the uplink sub-frame 7 is a first one of two continuous uplink'sub-frames subjected to multiple frame schedule, the value of the TPC downlink controlled delay parameter corresponding to the uplink sub-frame 7 is 6, otherwise, the value of the TPC downlink controlled delay parameter corresponding to the uplink sub-frame 7 is 7.", '5. The method of claim 2, wherein, the mapping relationship between the identifier of the uplink sub-frame and the value of the delay of TPC controlling is:
a one-to-one mapping relationship and/or a one-to-multiple mapping relationship.', 'a one-to-one mapping relationship and/or a one-to-multiple mapping relationship.', '6. The method of claim 1, wherein,
the mapping relationship between the identifier of the uplink sub-frame and the identifier of the downlink sub-frame is any one of:
a one-to-one mapping relationship, a one-to-multiple mapping relationship and a multiple-to-one mapping relationship.', 'the mapping relationship between the identifier of the uplink sub-frame and the identifier of the downlink sub-frame is any one of:
a one-to-one mapping relationship, a one-to-multiple mapping relationship and a multiple-to-one mapping relationship.', 'a one-to-one mapping relationship, a one-to-multiple mapping relationship and a multiple-to-one mapping relationship.', '7. The method of claim 1, wherein if a delay caused by the processing of the downlink control signaling by the User Equipment is 3 ms, the mapping relationship between the identifier of the uplink sub-frame and the identifier of the downlink sub-frame lies in that:
if an uplink and downlink sub-frame allocation mode 0 is employed, an uplink sub-frame 2 corresponds to a downlink sub-frame 5 or a special sub-frame 6, an uplink sub-frame 3 corresponds to a special sub-frame 6, an uplink sub-frame 4 corresponds to a downlink sub-frame 0, an uplink sub-frame 7 corresponds to the downlink sub-frame 0 or a special sub-frame 1, an uplink sub-frame 8 corresponds to the special sub-frame 1, and an uplink sub-frame 9 corresponds to the downlink sub-frame 5;
if an uplink and downlink sub-frame allocation mode 1 is employed, the uplink sub-frame 2 corresponds to the special sub-frame 6, the uplink sub-frame 3 corresponds to the downlink sub-frame 9, the uplink sub-frame 7 corresponds to the special sub-frame 1, and the uplink sub-frame 8 corresponds to the downlink sub-frame 4;
if an uplink and downlink sub-frame allocation mode 2 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8, and the uplink sub-frame 7 corresponds to the downlink sub-frame 3;
if an uplink and downlink sub-frame allocation mode 3 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8, the uplink sub-frame 3 corresponds to the downlink sub-frame 9, and the uplink sub-frame 4 corresponds to the downlink sub-frame 0;
if an uplink and downlink sub-frame allocation mode 4 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8, and the uplink sub-frame 3 corresponds to the downlink sub-frame 9;
if an uplink and downlink sub-frame allocation mode 5 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8; and
if an uplink and downlink sub-frame allocation mode 6 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 5, the uplink sub-frame 3 corresponds to the special sub-frame 6, the uplink sub-frame 4 corresponds to the downlink sub-frame 9, the uplink sub-frame 7 corresponds to the downlink sub-frame 0, and the uplink sub-frame 8 corresponds to the special sub-frame 1.', 'if an uplink and downlink sub-frame allocation mode 0 is employed, an uplink sub-frame 2 corresponds to a downlink sub-frame 5 or a special sub-frame 6, an uplink sub-frame 3 corresponds to a special sub-frame 6, an uplink sub-frame 4 corresponds to a downlink sub-frame 0, an uplink sub-frame 7 corresponds to the downlink sub-frame 0 or a special sub-frame 1, an uplink sub-frame 8 corresponds to the special sub-frame 1, and an uplink sub-frame 9 corresponds to the downlink sub-frame 5;', 'if an uplink and downlink sub-frame allocation mode 1 is employed, the uplink sub-frame 2 corresponds to the special sub-frame 6, the uplink sub-frame 3 corresponds to the downlink sub-frame 9, the uplink sub-frame 7 corresponds to the special sub-frame 1, and the uplink sub-frame 8 corresponds to the downlink sub-frame 4;', 'if an uplink and downlink sub-frame allocation mode 2 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8, and the uplink sub-frame 7 corresponds to the downlink sub-frame 3;', 'if an uplink and downlink sub-frame allocation mode 3 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8, the uplink sub-frame 3 corresponds to the downlink sub-frame 9, and the uplink sub-frame 4 corresponds to the downlink sub-frame 0;', 'if an uplink and downlink sub-frame allocation mode 4 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8, and the uplink sub-frame 3 corresponds to the downlink sub-frame 9;', 'if an uplink and downlink sub-frame allocation mode 5 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 8; and', 'if an uplink and downlink sub-frame allocation mode 6 is employed, the uplink sub-frame 2 corresponds to the downlink sub-frame 5, the uplink sub-frame 3 corresponds to the special sub-frame 6, the uplink sub-frame 4 corresponds to the downlink sub-frame 9, the uplink sub-frame 7 corresponds to the downlink sub-frame 0, and the uplink sub-frame 8 corresponds to the special sub-frame 1.', '8. The method of claim 7, wherein when the uplink and downlink sub-frame allocation mode 0 is employed, if the uplink sub-frame 2 is a second one of two continuous uplink sub-frames subjected to multiple frame schedule, the uplink sub-frame 2 corresponds to the downlink sub-frame 5, otherwise, the uplink sub-frame 2 corresponds to the special sub-frame 6; and if the uplink sub-frame 7 is a second one of two continuous uplink sub-frames subjected to the multiple frame schedule, the uplink sub-frame 7 corresponds to the downlink sub-frame 0, otherwise, the uplink sub-frame 7 corresponds to the special sub-frame 1.', '9. The method of claim 1, wherein, a time interval between the uplink sub-frame and the downlink sub-frame determined according to the sub-frame mapping is more than or equal to a delay caused by the processing of the downlink control signaling by the User Equipment.']
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SUMMARY
ClaimChart-US8526338B2-STO
Patent number:US8526338B2
Claim Chart Type : SEP Claim Chart
Price: 200 €
Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.