Method and apparatus for reference signal processing

A technology of reference signal and processing method, which is applied in the field of communication and can solve problems such as reducing transmission efficiency

Active Publication Date: 2013-12-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the problem in the related art that TTI Bundling will send the same number of SRSs as when TTI Bundling is not used, which reduc

Method used

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  • Method and apparatus for reference signal processing

Examples

Experimental program
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Embodiment 1

[0076] Figure 7 This is a first schematic diagram of sending a reference signal in a resource block pair according to an embodiment of the present invention.

[0077] In this example, in Figure 7 , the UE transmits in 4 consecutive TTIs, and the frequency domain positions of the resource block pairs in the 4 TTIs are the same. After reducing the number of demodulation reference signals, the number of demodulation reference signals in the resource block pairs in the kth, k+2 and k+3 TTIs remains unchanged, but there is no resource block pair in the k+1th TTI. A demodulation reference signal is sent. In the k+1 th TTI resource block pair, data is sent on the symbol used to send the demodulation reference signal to improve the spectral efficiency, or no data is sent to reduce the interference level of the demodulation reference signal of the neighboring cell.

[0078] At the receiving end, since the frequency domain positions of the resource block pairs in the 4 TTIs are the...

Embodiment 2

[0080] Figure 8 This is a second schematic diagram of sending a reference signal in a resource block pair according to an embodiment of the present invention.

[0081] exist Figure 8 , the UE transmits in 4 consecutive TTIs, and the frequency domain positions of the resource block pairs in the 4 TTIs are the same. The difference between the second embodiment and the first embodiment is that not only the kth, but also the number of demodulation reference signals in the resource block pairs in the k+2 and k+3 TTIs is unchanged, and the resource block pairs in the k+1th TTI are not changed. No demodulation reference signal is sent, and the symbol position of the demodulation reference signal in the resource block pair in the second slot in the kth TTI is moved backward, and the symbol position of the demodulation reference signal in the second slot in the kth TTI The symbol positions of the demodulation reference signals in the resource block pair are moved forward, so that t...

Embodiment 3

[0085] Figure 9 This is a third schematic diagram of sending a reference signal in a resource block pair according to an embodiment of the present invention.

[0086] exist Figure 9 In , the UE transmits in 4 consecutive TTIs, and the two resource block pairs in the two time slots in the TTI are in different positions, but there are resource block pairs with the same frequency domain position in different TTIs. Specifically, the first time slot in TTI k to TTI k+3 has the same frequency domain position of the resource block, and the second time slot has the same frequency domain position of the resource block.

[0087] In order to improve the spectral efficiency, the number of demodulation reference signals in the resource block pairs in TTI k and TTI k+2 remains unchanged, and the resource block pairs in TTI k+1 and TTI k+3 do not send demodulation reference signals, and TTI k+1 In the resource block pair in TTI k+3, data is sent on the symbol used to send the demodulatio...

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Abstract

The invention discloses a method and apparatus for reference signal processing. The method comprises: when sending data to a receiving terminal by a plurality of transmission time intervals (TTI), the sending terminal selects at least one TTI among the plurality of TTIs; and the sending terminal sends other signals except a decoding reference signal at at least one resource block pair of the at least one TTI. When the method and the apparatus are utilized, a problem that the TTI bundling will send sounding reference signals (SRS) with the same number as that in the situation without using TTI bundling and thus the transmission efficiency is reduced can be solved.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a reference signal processing method and device. Background technique [0002] In a wireless communication system, capacity and coverage are two important performance indicators. In order to increase capacity, co-frequency networking is generally used, but co-frequency networking increases inter-cell interference, resulting in reduced coverage performance. [0003] In the Long Term Evolution (LTE) system, the downlink adopts the Orthogonal Frequency Division Multiple Access (OFDMA) technology, and the uplink adopts the single-carrier-frequency division multiple access. Access (Single Carrier-Frequency Division Multiple Access, SC-FDMA for short) technology. At present, the LTE system generally adopts the same-frequency networking method, and this networking method will lead to a significant increase in inter-cell interference (Inter-Cell Interference, ICI for short). ...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W72/04
Inventor 关艳峰陈宪明罗薇张峻峰
Owner ZTE CORP
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