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Transmission method and device for demodulation reference signal of physical uplink control channel
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A technology for demodulating reference signals and control channels, which is applied in the field of methods and devices for sending physical uplink control channel demodulation reference signals, and can solve problems such as mutual interference between CoMP users, inability to decode OCC correctly, and interference.
Active Publication Date: 2013-09-18
ZTE CORP
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Problems solved by technology
[0023] 1. A user in a macro cell generates strong interference to a micro cell located near the user, especially in CoMP scenario 3;
[0024] 2. Due to the asymmetry of uplink and downlink nodes in the heterogeneous network, users within the range of a small cell extension area (Cell Range Extension, referred to as CRE) and users of uplink access nodes cause mutual interference;
[0025] 3. Under joint reception, the CoMP user and the user of the coordination node where they are located will interfere with each other;
[0026] 4. For users who use OCC orthogonality between cells, because their CS hopping patterns may be inconsistent, OCC cannot be decoded correctly
[0027] The above inter-cell interference problems and the problem that OCC cannot be decoded correctly have seriously affected the performance of the CoMP system and the advantages of CoMP technology.
[0028] In view of the existing problems of inter-cell interference in related technologies and the problem that OCC cannot be decoded correctly, no effective solution has been proposed so far
Method used
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Embodiment 1
[0160] The user equipment receives signaling configuration information sent by the base station for determining the demodulation reference signal of the physical uplink control channel of the user equipment, including: a user-specific cell number offset.
[0161] The user equipment uses the following formula to determine the sequence group number u of the demodulation reference signal of the physical uplink control channel: u=((f gh (n s )+f' ss )mod30+Δ u )mod30, where, f gh (n s ) is the sequence group jump pattern, f′ ss is the sequence shift pattern, Δ u is the user-specific sequence group number offset, and Δ u ∈ {0, 1, ..., 29}.
[0162] The user equipment may receive user-specific signaling configuration information for determining the demodulation reference signal of the physical uplink control channel of the user equipment sent by the base station through high-layer signaling or physical layer signaling.
Embodiment 2
[0164]The user equipment receives the signaling configuration information sent by the base station for determining the demodulation reference signal of the physical uplink control channel of the user equipment, including: a user-specific cell ID and a user-specific cell ID offset.
[0165] The user equipment uses one of the following formulas to determine the initialization conditions of the pseudo-random sequence generator of the sequence group hopping pattern of the physical uplink control channel demodulation reference signal
[0166]
[0167]
[0168]
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[0170]
[0171]
[0172]
[0173] as well as
[0174] in, is the cell identification number, is the user-specific cell identification number, is the user-specific cell identity offset, ΔN gh is the user-specific sequence group pattern offset, ΔN gh ∈ {0, 1, ..., 16}; at this point, the user equipment can further according to the initialization condition of the pseudo-random s...
Embodiment 3
[0178] The user equipment receives the signaling configuration information sent by the base station for determining the demodulation reference signal of the physical uplink control channel of the user equipment, including: user-specific cell identification number, user-specific cell identification offset, user-specific sequence shift Pattern bias.
[0179] The user equipment uses one of the following formulas to determine the sequence shift pattern of the demodulation reference signal of the physical uplink control channel:
[0180] f ss = N vID cell mod 30 ,
[0181] f ss = ( ( N ID cell + ΔN ID cell ...
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Abstract
The invention discloses a transmission method and a transmission device for a demodulation reference signal of a physical uplink control channel. The method comprises the following steps that user equipment (UE) receives UE-specific signaling configuration information from a base station; the UE determines the demodulation reference signal of the physical uplink control channel of the UE according to the UE-specific signaling configuration information; and the UE transmits the demodulation reference signal of the physical uplink control channel. According to the method and the device, the problems that inter-cell interference exists due to the fact that the demodulation reference signal of the physical uplink control channel of the UE can only be determined according to cell-specific signaling configuration information and that an OCC (orthogonal cover code) cannot be accurately decoded in the prior art can be solved, and the effects of improving the orthogonality of inter-cell physical uplink control channels, increasing the resource utilization rate of a CoMP (coordinated multiple point) system, reducing the inter-cell interference in the CoMP system and favorably improving the performance and the resource effectiveness of the CoMP system are further achieved.
Description
technical field [0001] The present invention relates to the communication field, in particular to a method and device for sending a physical uplink control channel demodulation reference signal. Background technique [0002] In the Long Term Evolution (LTE for short) system of the 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GPP for short), a base station centralized scheduling method is adopted to control user equipment (User Equipment, UE for short). Transmission of a physical uplink control channel (Physical Uplink Control Channel, PUCCH for short). [0003] It is stipulated in the LTE system that when there is no uplink data to be sent, the physical uplink control channel is sent on fixed time-frequency resources. Please refer to FIG. 1. As shown in FIG. 1, a physical uplink control channel occupies one resource block in the frequency domain (one resource block occupies 12 subcarriers), and lasts for two time slots in the time domain, tha...
Claims
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Application Information
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