Data transmission method and apparatus
First Claim
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1. A method performed by a wireless communication node, comprising:
- determining a third-type reference signal (RS) based on a signaling indication,wherein a third pattern of the third-type RS comprises a superposition of a first pattern of a first-type RS and a second pattern of a second-type RS, wherein the first pattern is a pattern for an RS of K1 ports and does not overlap with a pattern of a cell-specific reference signal (CRS) in Long Term Evolution (LTE) system and the second pattern is the pattern of the CRS in LTE system with K2 ports, wherein K1 and K2 are positive integers greater than 0;
determining a first sequence of the first-type RS, wherein the first sequence is a sub-sequence of a second sequence of a CRS, wherein a length of the second sequence is 2NRBmax,DL and a length of the first sequence is 2, wherein NRBmax,DL a maximum downlink bandwidth in LTE system, wherein the determining a first sequence rl,ns(i) of the first-type RS is performed based on
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Abstract
The present invention provides a data transmission method and apparatus. The method includes: transmitting physical downlink channel data according to a first-type reference signal (RS) or a second-type RS or a third-type RS. The method of the present invention ensures a balance between data transmission performance and RS overheads for different NarrowBand-Internet Of Things (NB-IOT) physical downlink channel data, thereby resolving the problem in the related art of not knowing which RS is to be used to transmit NB-IOT physical channel data.
11 Citations
13 Claims
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1. A method performed by a wireless communication node, comprising:
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determining a third-type reference signal (RS) based on a signaling indication, wherein a third pattern of the third-type RS comprises a superposition of a first pattern of a first-type RS and a second pattern of a second-type RS, wherein the first pattern is a pattern for an RS of K1 ports and does not overlap with a pattern of a cell-specific reference signal (CRS) in Long Term Evolution (LTE) system and the second pattern is the pattern of the CRS in LTE system with K2 ports, wherein K1 and K2 are positive integers greater than 0; determining a first sequence of the first-type RS, wherein the first sequence is a sub-sequence of a second sequence of a CRS, wherein a length of the second sequence is 2NRBmax,DL and a length of the first sequence is 2, wherein NRBmax,DL a maximum downlink bandwidth in LTE system, wherein the determining a first sequence rl,n s (i) of the first-type RS is performed based on - View Dependent Claims (2, 3, 4, 13)
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5. A device, comprising:
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at least one processor configured to determine a third-type reference signal (RS) based on a signaling indication, wherein a third pattern of the third-type RS comprises a superposition of a first pattern of a first-type RS and a second pattern of a second-type RS, wherein the first pattern is a pattern for an RS of K1 ports and does not overlap with a pattern of a cell-specific reference signal (CRS) in Long Term Evolution (LTE) system and the second pattern is the pattern of the CRS in LTE system with K2 ports, wherein K1 and K2 are positive integers greater than 0, wherein the at least one processor is further configured to obtain a first sequence of the first-type RS, wherein the first sequence is a sub-sequence of a second sequence of a CRS, wherein a length of the second sequence is 2NRBmax,DL and a length of the first sequence is 2, wherein NRBmax,DL is a maximum downlink bandwidth in LTE system, wherein the first sequence rl,n s (i) of the first-type RS is determined based on - View Dependent Claims (6, 7, 8)
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9. A method performed by a wireless communication device, comprising:
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receiving the physical downlink channel data according to a third-type RS, wherein a third pattern of the third-type RS comprises a superposition of a first pattern of a first-type RS and a second pattern of a second-type RS, wherein the first pattern is a pattern for an RS of K1 ports and does not overlap with a pattern of a cell-specific reference signal (CRS) in Long Term Evolution (LTE) system and the second pattern is the pattern of the CRS in LTE system with K2 ports, wherein K1 and K2 are positive integers greater than 0; wherein the third-type reference signal (RS) is determined based on a signaling indication; and
wherein the first-type RS comprises a first sequence, wherein the first sequence is a sub-sequence of a second sequence of a CRS, wherein a length of the second sequence is 2NRBmax,DL and a length of the first sequence is 2, wherein NRBmax,DL is a maximum downlink bandwidth in LTE system, wherein the obtaining a first sequence rl,ns (i) of the first-type RS is performed based on - View Dependent Claims (10, 11, 12)
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Specification