WO2013159633A1 - 用于多输入多输出mimo的传输方法和设备 - Google Patents
用于多输入多输出mimo的传输方法和设备 Download PDFInfo
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- WO2013159633A1 WO2013159633A1 PCT/CN2013/073520 CN2013073520W WO2013159633A1 WO 2013159633 A1 WO2013159633 A1 WO 2013159633A1 CN 2013073520 W CN2013073520 W CN 2013073520W WO 2013159633 A1 WO2013159633 A1 WO 2013159633A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
Definitions
- the present invention relates to the field of communications, and in particular, to a transmission method and apparatus for multiple input multiple output MIMO. Background technique
- Multi-Input Multi-Output (MIMO) technology one of the important technologies to improve the peak rate of users, has become an important performance of many communication systems, such as LTE (Long Term Evolution) system, UMTS HSDPA. (Universal Mobile Telecommunications System High Speed Downlink Packet Access) system, etc.
- LTE Long Term Evolution
- UMTS HSDPA Universal Mobile Telecommunications System High Speed Downlink Packet Access
- Hybrid Automatic Repeat Quest is a channel coding technology that can effectively guarantee the correct transmission of data.
- the number of HARQ processes is equal to the Hybrid Automatic Repeat Quest Round Trip Time (HARQ RTT).
- HARQ RTT Hybrid Automatic Repeat Quest Round Trip Time
- the UE User Equipment
- the base station NodeB
- the present invention provides a transmission method for multiple-input multiple-output MIMO. Under the independent indication of rank value and acknowledgment characters, the user equipment UE can correctly perform MIMO HARQ transmission under the mechanism of not changing the current uplink HARQ. The performance of MIMO is effectively guaranteed.
- a transmission method for multiple input multiple output MIMO comprising:
- the user equipment UE sends the first data to the base station NodeB in the first process of the hybrid automatic repeat request-loopback time HARQ_RTT, and receives the acknowledgement word associated with the first data returned by the NodeB;
- a user equipment including:
- a processing module configured to send, by the first process of the hybrid automatic repeat request-loopback time HARQ-RTT, the first data to the base station NodeB, and receive the acknowledgement character related to the first data returned by the NodeB;
- a determining module configured to determine, according to the acknowledgement character and a rank value to be used for the next transmission, a data transmission of the first process in the next HARQ RTT.
- a base station including:
- a control module configured to detect a channel code of the first enhanced dedicated channel E-DCH dedicated physical control channel and the second enhanced dedicated channel E-DCH dedicated physical control channel to determine the first stream data and the second stream data.
- the embodiment of the present invention has the following beneficial effects:
- the present invention determines data transmission of the same process in the next HARQ-RTT according to the acknowledgment character associated with the previous transmission data and the rank value of the next transmission to be used, so that the user equipment UE is Under the premise of not changing the current uplink HARQ mechanism, the MIMO HARQ transmission is correctly performed, and the performance of the MIMO is effectively ensured; and the base station can also identify the data transmission of the primary and secondary streams when the rank value is 1.
- FIG. 1 illustrates a schematic diagram of a transmission method for multiple input multiple output MIMO according to an embodiment of the present invention.
- FIG. 2 illustrates a schematic diagram of a transmission structure of multiple input multiple output MIMO according to an embodiment of the present invention.
- FIG. 3 illustrates a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- FIG. 4 is a block diagram showing the structure of a base station according to an embodiment of the present invention. detailed description
- FIG. 1 a schematic diagram of a transmission method for multiple-input multiple-output MIMO according to an embodiment of the present invention is illustrated.
- the method may specifically include:
- the user equipment UE sends the first data to the base station NodeB in the first process of the hybrid automatic repeat request-loopback time HARQ_RTT, and receives the acknowledgement character related to the first data returned by the NodeB;
- the UE determines, according to the acknowledgement character and a rank value to be used for a next transmission, data transmission of the first process in a next HARQ RTT.
- step S100 the UE sends the first data to the base station NodeB in the first process in the HARQ-RTT.
- the first process may be
- the first process of the HARQ-RTT in the embodiment of the present invention may belong to the data initial transmission or the data retransmission process, and the first process of the next HARQ-RTT may correspond to the first retransmission or the next retransmission, respectively.
- the rank of the user equipment UE in the MIMO communication may be adaptive. In other words, the rank value may change during each scheduling period, and the first data may include different data streams according to the rank value.
- the first data can be A single stream data consisting of a block of data, a rank value of 2 corresponds to dual stream data transmission, and a first data may include dual stream data composed of two data blocks, and may further include more streams according to rank values. data.
- the single stream data is referred to as mainstream data
- the above dual stream data is referred to as mainstream data and auxiliary stream data, or primary and secondary stream data.
- the user equipment UE sends the first data to the base station NodeB after the first process of the HARQ-RTT (hereinafter, the description is convenient, the first process is referred to as process D1, and the process D1 may be any one of the HARQ-RTT).
- the base station NodeB feeds back to the UE an acknowledgement character (ACK/NACK) related to the first data, where the confirmation character is used to indicate information related to whether the first data is transmitted correctly or not, for example, when the first data is used.
- ACK/NACK acknowledgement character
- the confirmation character may be the case where the mainstream data is correct and the mainstream data is incorrect.
- the confirmation character may be correct for the primary auxiliary stream data
- the mainstream data is correct
- the auxiliary stream data is incorrect
- the mainstream data is incorrect
- the auxiliary stream data is correct
- the primary and secondary stream data are both correct. There are four cases of error.
- the UE After receiving the acknowledgment character sent by the NodeB, the UE determines the data transmission of the same process D1 (ie, the first process described above) in the next HARQ_RTT according to the received acknowledgment character and the rank value of the next transmission to be used.
- the next transmission ie: the next HARQ - the transmission of the process D1 in the RTT
- the rank value to be used can be adaptively determined in the MIM0 transmission (the rank value is 1 for the single stream transmission form) and 2 (the rank value is 2). Corresponding to the dual stream transmission format), or other values. In the embodiment of the present invention, only the rank values 1 and 2 are taken as an example to illustrate that the UE determines the next time according to the rank value and the confirmation character.
- the user equipment UE sends the mainstream data to the NodeB according to the single-stream transmission form corresponding to the rank value of 1 in the process D1 of the HARQ-RTT, and the acknowledgement character received by the UE from the NodeB regarding the mainstream data indicates that the mainstream data is correct, and the next
- the UE transmits new mainstream data in the single-stream transmission format corresponding to the rank value 1 in the process D1 of the next HARQ-RTT, and uses the next HARQ. – RTT process D1 newly scheduled power offset.
- the power offset of the new scheduling is notified by the base station to the UE in the form of a power offset determined according to the scheduling algorithm.
- the base station determines the scheduling grant available to the UE according to the current priority of the UE, the network load, and the like, and the scheduling grant is equivalent to how much power the UE can transmit, and the UE sends the power according to the scheduled power, which can be guaranteed. Does not exceed the base station load, thus ensuring the performance of network transmission.
- the confirmation character received at the UE indicates that the mainstream data is correct, and the next scheduled transmission is used.
- the UE sends new mainstream data and new auxiliary stream data in the next HARQ-RTT process D1 according to the dual-stream transmission format corresponding to the rank value 2 used in the current transmission, and uses the next A HARQ-RTT process D1 newly scheduled power offset.
- the primary data is sent by the UE in the process of the HARQ-RTT process D1 to the NodeB according to the single stream transmission corresponding to the rank value of 1.
- the received acknowledgement character indicates that the mainstream data is incorrect, and the next time the rank value is 1, the UE may be next.
- the HARQ-RTT process D1 retransmits the mainstream data according to the single stream transmission corresponding to the rank value 1, and uses the historical power offset (for the convenience of description, here and below, the historical power offset represents the last HARQ – RTT process D1 scheduled power offset).
- the primary data is sent by the UE to the NodeB according to the single-stream transmission format corresponding to the rank value of 1.
- the UE When the received acknowledgement character indicates that the mainstream data is incorrect, and the next transmission rank value is 2, the UE corresponds to the rank value 2 in the next transmission.
- the dual stream transmission form retransmits the main stream data and simultaneously transmits new auxiliary stream data, and uses the main stream data to be offset according to the new power corresponding to the rank value 2.
- the new power offset for the same block length data can effectively suppress the inter-stream interference and ensure the performance of data transmission.
- the UE sends the mainstream data to the NodeB according to the rank value of 1.
- the UE When the received acknowledgment character indicates that the mainstream data is erroneous and the next transmission rank value is 2, even if the rank value is 2, the UE The main stream data can still be retransmitted according to the single stream transmission format corresponding to the rank value 1, and the historical power offset is used.
- the UE may retransmit only the process of the previous HARQ-RTT in the single stream form in the process D1 of the next HARQ RTT. D1 transmits the wrong mainstream data or auxiliary stream data.
- the user equipment UE sends the primary and secondary stream data to the NodeB in the dual-stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received acknowledgement character indicates that the data of the primary and secondary streams are correct, and the rank value of the next transmission is At 1 o'clock, the UE may transmit new mainstream data in the single HARD transmission form corresponding to the rank value 1 in the next HARQ-RTT process D1, and use the newly scheduled power offset of the process D1 of the next HARQ-RTT.
- the UE sends the primary and secondary stream data to the NodeB according to the rank value of 2 in the process D1 of the HARQ-RTT.
- the received acknowledgement character indicates that the primary and secondary stream data are correct, and the next time the rank value of the transmission is 2, the UE may be in the next HARQ-RTT process D1 sends new mainstream data and new auxiliary stream data according to the dual stream transmission corresponding to rank value 2, and uses the next one.
- the UE performs the dual-stream transmission shape corresponding to the rank value of 2 in the process D1 of the HARQ-RTT to the NodeB.
- the main auxiliary stream data is sent, and the received confirmation character indicates that the mainstream data is correct and the auxiliary stream data is incorrect, and when the rank value of the next transmission is 1, the UE may follow the rank value in the process D1 of the next HARQ-RTT.
- Retransmitting the auxiliary stream data in the corresponding single stream transmission mode wherein the retransmission of the auxiliary stream data may use the auxiliary stream data according to the new power offset corresponding to the rank value 1 or may use the next HARQ-RTT
- the power offset of the newly scheduled process D1, or the maximum of the two, that is, Max ⁇ the auxiliary stream data is offset according to the new power corresponding to the rank value 1, and the next HARQ-RTT process D1 is newly scheduled.
- Power offset ⁇ In other words, when the mainstream data of the last transmission described above is correct and the auxiliary stream data is incorrect and the rank value of the next transmission to be used is 1, the power offset of the UE retransmitting the auxiliary stream data may be the above three. Forms.
- Different power offsets can be used in different application scenarios. For example, in the case where the quality of the two transmission channels does not change much, the historical power offset is used, and a better combining gain can be obtained.
- the mainstream data may not be scheduled, that is, the base station may schedule new power for the mainstream data, but the mainstream data uses the historical power for the retransmission of the auxiliary stream data.
- using the newly scheduled power offset can overcome the above problems and can be scheduled in real time, but if the power offset of the new schedule is smaller than the historical power offset, it may affect the combined gain of the auxiliary stream data, ⁇ Use the maximum of the two to make the two compromise.
- the UE may use the primary enhanced dedicated channel E-DCH dedicated physical data channel E-DPDCH and the secondary enhanced dedicated channel E-DCH dedicated physical control channel SE-DPCCH to carry the auxiliary stream data and control information, and the base station NodeB
- the side may determine, according to the detection of the channel code, that the data stream transmitted this time is the auxiliary stream data.
- the UE may also indicate the mainstream data and the auxiliary stream data by bit information in the non-pilot bits of the S-DPCCH when performing data transmission in the form of single stream transmission, for example, by using Table 1 or Table 2 below. The form shown is indicated.
- the auxiliary stream data is carried on the E-DPDCH data channel, and weighted by the weighting coefficient of the main precoding weight.
- mainstream data is weighted by W1 and W2
- auxiliary stream data is weighted by W3 and W4.
- the E-DPDCH is used to carry the retransmitted auxiliary stream data
- the weighted W1 and W2 used for weighting the general mainstream data are used to perform the retransmission of the auxiliary stream data.
- the UE sends the primary and secondary stream data to the NodeB in the dual-stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received acknowledgement character indicates that the mainstream data is correct and the auxiliary stream data is incorrect, and the rank value of the next transmission is At 2 o'clock, the UE may retransmit the new mainstream data and retransmit the auxiliary stream data according to the dual stream transmission corresponding to the rank value 2 in the next HARQ-RTT process D1, and may use the historical power configuration, or the next HARQ-RTT.
- the power offset ⁇ that is, the UE can use the above three forms of power offset when transmitting the new mainstream data and retransmitting the auxiliary stream data in the form of dual stream transmission.
- the historical power offset is used, and a better combined benefit can be obtained.
- the UE sends the primary and secondary stream data to the NodeB in the dual-stream transmission format corresponding to the rank value of 2 in the process of the HARQ-RTT process D1, and the received confirmation character indicates that the mainstream data is correct and the auxiliary stream is If the data is incorrect, and the rank value of the next transmission is 2, the UE may retransmit the auxiliary stream data according to the dual stream transmission format corresponding to the rank value 2 in the next HARQ-RTT process D1, that is, the mainstream and the auxiliary stream should be transmitted.
- the auxiliary stream data is retransmitted on the channels of both data streams, and the historical power offset is used.
- the UE in the case that no new data can be transmitted in the process D1 of the next HARQ-RTT, the UE can retransmit only the auxiliary stream data according to the single stream transmission format.
- the UE sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT.
- the received acknowledgement character indicates that the mainstream data is incorrect and the auxiliary stream data is correct, and the rank value of the next transmission is At 1 o'clock, the UE may retransmit the main stream data according to the single stream transmission format corresponding to the rank value 1 in the process D1 of the next HARQ-RTT, and use the main data to be offset according to the new power corresponding to the rank value 1.
- the new power offset corresponding to the new rank value can be used to ensure data transmission in the case of the rank change of the same HARQ-RTT process and the next HARQ-RTT transmission of the same process. Performance.
- the UE sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received confirmation character indicates that the mainstream data is incorrect and the auxiliary stream data is correct. And when the rank value of the next transmission is 2, the UE may retransmit the mainstream data according to the dual stream transmission format corresponding to the rank value 2 in the process D1 of the next HARQ-RTT, and simultaneously transmit the new auxiliary stream data, and use the historical power. Offset.
- the UE sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received confirmation character indicates that the mainstream data is incorrect and the auxiliary stream data
- the UE may retransmit the mainstream data in the process of DH of the next HARQ-RTT according to the dual stream transmission corresponding to the rank value 2, that is, on the channel on which the primary and secondary streams should be transmitted.
- the mainstream data is retransmitted and the historical power configuration is used.
- the UE in the case that no new data can be transmitted on the UE side, the UE can retransmit only the mainstream data according to the single stream transmission format.
- the UE sends the primary and secondary stream data to the NodeB according to the rank value of 2 in the process D1 of the HARQ-RTT.
- the received acknowledgement character indicates that the primary and secondary stream data are all wrong, and the next time the rank value of the transmission is 1, the UE may be next.
- the HARQ-RTT process D1 retransmits the mainstream data according to the single-stream transmission format corresponding to the rank value 1, discards the auxiliary stream data, and uses the mainstream data to be offset according to the new power corresponding to the rank value 1.
- the UE sends the primary and secondary stream data to the NodeB in the dual-stream transmission format corresponding to the rank value of 2 in the process of the HARQ-RTT process D1, and the received acknowledgement character indicates that the primary and secondary stream data are all wrong, and the next transmission rank value is 2
- the UE may retransmit the primary and secondary stream data according to the dual stream transmission format corresponding to the rank value 2 in the process D1 of the next HARQ-RTT, and use the historical power offset.
- the user equipment 300 may specifically include:
- the processing module 302 is configured to send the first data to the base station NodeB in the first process of the hybrid automatic repeat request-loopback time HARQ-RTT, and receive the acknowledged character associated with the first data returned by the NodeB;
- the determining module 304 is configured to determine, according to the acknowledgement character and the rank value to be used for the next transmission, data transmission of the first process in the next HARQ RTT.
- the processing module sends the first data to the NodeB according to the rank value in the first process of the HARQ-RTT (hereinafter, referred to as the process D1 for the description), where the first data includes the mainstream data (corresponding to the rank value) A single stream transmission format of 1), and primary and secondary stream data (corresponding to a dual stream transmission form with a rank value of 2).
- the first process of the HARQ-RTT in the embodiment of the present invention may belong to the data initial transmission or the data retransmission process, and the first process of the next HARQ-RTT may correspond to the first retransmission respectively. Or the next retransmission.
- the confirmation character received by the processing module is used to indicate the information about whether the first data is transmitted correctly.
- the confirmation character when the first data is the mainstream data, the confirmation character may be the mainstream data and the mainstream data error.
- the confirmation character may be correct for the primary auxiliary stream data
- the mainstream data is correct
- the auxiliary stream data is incorrect
- the mainstream data is incorrect
- the auxiliary stream data is correct
- the primary and secondary stream data are both correct. There are four cases of error.
- the processing module sends the mainstream data to the NodeB in the process of the single-stream transmission corresponding to the rank value of 1 in the process D1 of the HARQ-RTT, and the received confirmation character from the NodeB about the mainstream data indicates that the mainstream data is correct, and the rank of the next transmission is When the value is 1, the determination module determines the next one
- the process of HARQ RTT D1 sends new mainstream data according to the single stream transmission corresponding to rank value 1, and uses the power offset of the newly scheduled HARQ-RTT process D1.
- the power offset of the new scheduling is notified to the UE by the base station in the form of a power offset determined according to the scheduling algorithm. Specifically, the base station determines, according to the current priority of the UE, the network load, and the like, the scheduling grant that is available to the UE, where the scheduling grant is equivalent to how much power the UE can transmit, and the UE sends the power according to the scheduled power, which can be guaranteed. Does not exceed the base station load, thus ensuring the performance of network transmission.
- the confirmation character received by the processing module indicates that the mainstream data is correct, and the next time the reserved rank value is 2, the module is determined to be next.
- the process of the HARQ RTT D1 transmits the new mainstream data and the new auxiliary stream data according to the dual stream transmission format corresponding to the rank value 2 used in this transmission, and uses the power offset of the newly scheduled HARQ-RTT process D1.
- the processing module sends the mainstream data to the NodeB in the single-stream transmission format corresponding to the rank value of 1 in the process D1 of the HARQ-RTT.
- the received acknowledgement character indicates that the mainstream data is incorrect, and the next time the rank value is 1, the determining module can be under A HARQ-RTT process D1 retransmits the main stream data according to the single stream transmission format corresponding to the rank value 1, and uses the historical power offset.
- the determining module retransmits the mainstream data according to the dual stream transmission format corresponding to the rank value 2 in the next transmission and simultaneously transmits the new auxiliary stream data, and uses the mainstream data corresponding to the rank value 2 New power offset.
- the new power offset for the same block length data can effectively suppress the inter-stream interference and ensure the performance of data transmission.
- the processing module sends the mainstream data to the NodeB according to the rank value of 1 in the process D1 of the HARQ-RTT, and the received acknowledgement character indicates that the mainstream data is incorrect, and the next transmission rank value is 2 Even if the rank value is 2, the determining module can retransmit the main stream according to the single stream transmission corresponding to the rank value 1, and use the historical power offset.
- the determining module can only retransmit the last HARQ-RTT process D1 in the next HARQ-RTT process D1. Mainstream data or auxiliary stream data.
- the processing module sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received confirmation character indicates that the data of the primary and secondary streams are correct, and the rank value of the next transmission is 1
- the determining module may send the new mainstream data in the process of the next HARQ-RTT process D1 according to the single stream transmission corresponding to the rank value 1, and adopt the power offset of the newly scheduled process of the next HARQ-RTT process D1.
- the determining module may send the new mainstream data and the new auxiliary stream data in the dual stream transmission format corresponding to the rank value 2 in the process D1 of the next HARQ-RTT, and use the next HARQ-RTT.
- the processing module sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received confirmation character indicates that the mainstream data is correct and the auxiliary stream data is incorrect, and the rank value of the next transmission is performed.
- the determining module may retransmit the auxiliary stream data according to the single stream transmission format corresponding to the rank value 1 in the process D1 of the next HARQ-RTT, where the retransmission of the auxiliary stream data may be used according to the auxiliary stream data.
- the power offset of the UE retransmitting the auxiliary stream data may be the above three. Forms. Different power offsets can be used in different application scenarios.
- the mainstream data may not be scheduled, that is, the base station may schedule new power for the mainstream data, but the mainstream data uses the historical power for the retransmission of the auxiliary stream data.
- the newly scheduled power offset can overcome the above problems and can be scheduled in real time, but if the power offset of the new schedule is smaller than the historical power offset, it may affect the combined gain of the auxiliary stream data, ⁇ Use the maximum of the two to make the two compromise.
- the determining module may use the E-DCH Dedicated Physical Control Channel (E-DPDCH) and the E-DCH Dedicated Physical Control Channel (E-DPDCH) and the auxiliary enhanced channel E-DCH dedicated physical control auxiliary stream data and control.
- Information and the base station NodeB side can determine the current transmission based on the detection of the channel code.
- the data stream that is transmitted is the auxiliary stream data.
- the configuration module may use the bit information in the non-pilot bits of the S-DPCCH to indicate the mainstream data and the auxiliary stream data when the data transmission is performed by using the single stream transmission format, for example, by using Table 1 or a table. The form shown in 2 is indicated.
- the auxiliary stream data is carried on the E-DPDCH data channel, and weighted by the weighting coefficient of the main precoding weight.
- mainstream data is weighted by W1 and W2
- auxiliary stream data is weighted by W3 and W4.
- the retransmitted auxiliary stream data is carried by the E-DPDCH, and the retransmitted auxiliary stream data is weighted by the weights W1 and W2 used for weighting the general mainstream data.
- the processing module sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received confirmation character indicates that the mainstream data is correct and the auxiliary stream data is incorrect, and the rank value of the next transmission is performed.
- the determining module may send the new mainstream data in the process of the next HARQ-RTT process D1 according to the dual stream transmission corresponding to the rank value 2, and retransmit the auxiliary stream data, and may use the historical power configuration, or the next HARQ- The power offset of the new scheduling of process D1 in RTT, or the maximum of the above-mentioned historical power offset and the power offset of the new scheduling of process D1, namely: Max ⁇ historical power offset, next HARQ-RTT process D1 new The scheduled power offset ⁇ , that is, the UE can use the above three forms of power offset when transmitting the new mainstream data and retransmitting the auxiliary stream data in the form of dual stream transmission.
- Those skilled in the art can select according to different application scenarios.
- the determining module may further retransmit the auxiliary stream data according to the dual stream transmission format corresponding to the rank value 2 in the process D1 of the next HARQ-RTT, that is, on the channel that should transmit both the mainstream stream and the auxiliary stream.
- the auxiliary stream data is transmitted, and the historical power offset is used.
- the auxiliary stream data can be retransmitted according to the single stream transmission form.
- the processing module sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received confirmation character indicates that the mainstream data is incorrect and the auxiliary stream data is correct, and the rank value of the next transmission is performed.
- the determining module may retransmit the main stream data in the single stream transmission format corresponding to the rank value 1 in the process D1 of the next HARQ-RTT, and use the main data to be offset according to the new power corresponding to the rank value 1.
- the new power offset corresponding to the new rank value can be used to ensure data transmission in the case of the rank change of the same HARQ-RTT process and the next HARQ-RTT transmission of the same process. Performance.
- the processing module sends the primary and secondary stream data to the NodeB in the dual stream transmission format corresponding to the rank value of 2 in the HARQ-RTT process D1, and the received confirmation character indicates that the mainstream data is incorrect and the auxiliary stream data is correct, and the rank value of the next transmission is performed.
- the determining module can retransmit the main stream data according to the dual stream transmission form corresponding to the rank value 2 in the process D1 of the next HARQ-RTT, and simultaneously transmit the new auxiliary stream data, and use the historical power offset.
- the processing module is
- the process D1 of the HARQ RTT sends the primary and secondary stream data to the NodeB according to the dual stream transmission format corresponding to the rank value of 2.
- the received acknowledgement character indicates that the mainstream data is incorrect and the auxiliary stream data is correct, and the next transmission rank value is 2,
- the determining module may retransmit the mainstream data according to the dual stream transmission format corresponding to the rank value 2 in the process D1 of the next HARQ-RTT, that is, retransmit the mainstream data on the channel on which the primary and secondary stream data should be transmitted, and use the historical power. Configuration.
- the UE can retransmit only the mainstream data according to the single stream transmission format.
- the processing module sends the primary and secondary stream data to the NodeB according to the rank value of 2 in the process D1 of the HARQ-RTT, and the received confirmation character indicates that the primary and secondary stream data are all wrong, and the next transmission rank value is 1, the determining module can In the next HARQ-RTT process D1, the mainstream data is retransmitted according to the single-stream transmission format corresponding to the rank value 1, the auxiliary stream data is discarded, and the mainstream data is offset according to the new power corresponding to the rank value 1.
- the processing module sends the primary and secondary stream data to the NodeB in the dual-stream transmission format corresponding to the rank value of 2 in the process D1 of the HARQ-RTT, and the received acknowledgement character indicates that the primary and secondary stream data are all wrong, and the rank value of the next transmission is 2
- the determining module may retransmit the primary and secondary stream data according to the dual stream transmission format corresponding to the rank value 2 in the process D1 of the next HARQ-RTT, and use the historical power offset.
- the base station 400 may specifically include:
- the control module 402 is configured to detect channel codes of the first E-DCH dedicated physical control channel and the second E-DCH dedicated physical control channel to determine the first stream data and the second stream data.
- the mainstream data and the control information are carried by the data channel E-DPDCH and the control channel E-DPCCH
- the data channel SE-DPDCH and the control channel SE - DPCCH carries auxiliary stream data and data information.
- the control module can determine the mainstream data and the auxiliary stream data by detecting the channel codes of the E-DPCCH and the SE-DPCCH, in other words, indicating the mainstream data according to the difference between the E-DPCCH and the SE-DPCCH channel code. And auxiliary stream data.
- the UE performs primary and secondary stream indication by using bits in the non-pilot bits of the physical channel S-DPCCH, and the control module of the base station NodeB may indicate the bit according to the non-pilot bits of the S-DPCCH.
- the information determines the first stream data and the second stream data. For example, as shown in Table 3 below: Table 3
- bits in a slot in the S-DPCCH 8 are pilot bits, and the remaining 2 are non-pilot bits.
- the remaining 2 bits can be used as the bits indicated by the primary and secondary streams. 1 or Table 2.
- the user equipment UE can correctly perform the HARQ of the MIM0 under the independent indication of the rank value and the ACK/NACK without changing the current uplink HARQ mechanism. Transmission, effectively guarantee the performance of MIM0 such as inter-stream interference suppression. Moreover, the base station NodeB can also correctly identify the primary and secondary stream data transmission when the rank value is 1.
- the machine can be read into a storage medium, and when executed, the program can include the flow of an embodiment of the methods as described above.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
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Abstract
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AU2013252287A AU2013252287B2 (en) | 2012-04-28 | 2013-03-30 | Multiple-input multiple-output (mimo) transmission method and apparatus |
EP13780866.3A EP2843865A4 (en) | 2012-04-28 | 2013-03-30 | TRANSMISSION METHOD AND DEVICE FOR MULTI-INPUT MULTI-OUTPUT (MIMO) |
US14/526,075 US9485759B2 (en) | 2012-04-28 | 2014-10-28 | Multiple-input multiple-output (MIMO) transmission method and apparatus |
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EP (1) | EP2843865A4 (zh) |
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US10491497B2 (en) * | 2014-09-05 | 2019-11-26 | Qualcomm Incorporated | Round trip time determination |
CN107306446B (zh) * | 2016-04-23 | 2019-10-01 | 上海朗帛通信技术有限公司 | 一种窄带移动通信的方法和装置 |
WO2018000119A1 (zh) * | 2016-06-27 | 2018-01-04 | 华为技术有限公司 | 上行传输的方法和装置 |
US10790885B1 (en) * | 2019-02-22 | 2020-09-29 | Sprint Spectrum L.P. | Control of MIMO configuration based on retransmission rate |
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Publication number | Publication date |
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US20150049742A1 (en) | 2015-02-19 |
CN103378947A (zh) | 2013-10-30 |
AU2013252287A1 (en) | 2014-11-20 |
US9485759B2 (en) | 2016-11-01 |
EP2843865A1 (en) | 2015-03-04 |
EP2843865A4 (en) | 2015-05-06 |
AU2013252287B2 (en) | 2016-01-21 |
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