Method and device for configuring demodulation reference symbols of enhanced common search space
A technology of public search space and demodulation reference symbols, which is applied in the direction of digital transmission system, multiple use of transmission path, error prevention, etc., can solve the problem of demodulation enhanced public search space, UE cannot obtain effective DMRS, signal overlap, etc. problem, to achieve the effect of improving transmission rate and utilization, improving demodulation performance and reliability, and increasing capacity
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Embodiment 1
[0031] Figure 4 It shows the working flow diagram of the DMRS configuration method for enhancing the common search space provided by the embodiment of the present invention, as shown in Figure 4 As shown, the method includes:
[0032] Step 401 , during initial network configuration or network optimization, configure DMRSs with different antenna ports for each adjacent cell.
[0033] Specifically, specific configuration operations can be performed in the following two ways:
[0034] Configuration method 1. For the cell currently to be allocated, the value of the cell ID of the cell is used to modulo the predetermined parameter to obtain the modulus result. According to the corresponding relationship between the predetermined index value and the DMRS of the antenna port, the value of the modulus result will be the same The DMRS of the antenna port corresponding to the index value of is configured for the cell;
[0035] For example, by dividing the value of the cell ID of th...
Embodiment 2
[0069] In this scenario, there are 7 adjacent cells, that is, cell N~cell N+6, and each cell includes a macro base station and a low-power base station (pico). The schematic diagram of this scenario can be shown as Figure 9 shown.
[0070] In this scenario, as Figure 10 As shown, the process of configuring the DMRS of the enhanced common search space for each adjacent cell includes the following steps:
[0071] Step 1001. In the process of network initial configuration or network optimization, in a layered network including macro base stations and low-power base stations, configure DMRS with different antenna ports for adjacent macro base stations, so that they are within the coverage of the same macro base station. DMRS configured with different antenna ports for low-power base stations;
[0072] Preferably, the adjacent macro base stations are configured with DMRSs that occupy different antenna ports of different REs in OFDM symbols, and the low-power base stations withi...
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