A special subframe configuration method in a TDD LTE system
A technology of special subframe and configuration method, applied in the field of configuration of special subframe
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Embodiment 1
[0043] Add special subframe configurations with UpPTS symbol lengths 3 and 4. Keep the existing DwPTS length unchanged and shorten the GP length to obtain more special subframe configurations of UpPTS symbols.
[0044] Such as Figure 4 As shown, 7 special subframe configurations are added to the normal downlink CP, and some of the 7 configurations can be selected to be used; 5 special subframe configurations are added to the extended CP, and some of the 5 configurations can be selected to be used.
[0045] When the uplink UpPTS is 3symbol, the following special subframe configurations are added. The UpPTS length of the uplink normal CP is 6592·T s , the UpPTS length of the uplink extended CP is 7680·T s :
[0046] When the downlink normal CP is configured with 10, the length of DwPTS is 6592·T s , equivalent to 3symbol;
[0047] Configuring 11 when the downlink normal CP indicates that the length of DwPTS is 19760·T s , equivalent to 9symbol;
[0048] When the downlink n...
Embodiment 2
[0060] Embodiment 2: Add special subframe configurations with UpPTS symbol lengths of 3 and 4. Reduce the DwPTS length and keep the GP length unchanged to obtain more special subframe configurations of UpPTS symbols.
[0061] Such as Figure 6 As shown, 8 special subframe configurations are added to the normal downlink CP, and some of the 8 configurations can be selected to be used. Six special subframe configurations are added to the extended CP, and some of the six configurations can be selected to be used.
Embodiment 3
[0062] Embodiment 3: Add an RRC configuration signaling, which may be called TDD-Config-v13, to realize the configuration of the newly added special subframe pattern in the above embodiment. If all the special subframe patterns of Example 1 are selected, the RRC can be designed as follows:
[0063] TDD-Config-v13::=SEQUENCE{
[0064] specialSubframePatterns-v13 ENUMERATED{ssp10,ssp11,ssp12,ssp13,ssp14,ssp15,ssp16,ssp8,,ssp9}
[0065]}
[0066] The above-mentioned embodiments propose two ways of adding special subframes, one is to maintain DwTPS to reduce the number of symbols of GP; the other is to maintain GP to reduce the number of symbols of DwTPS, and provide several special subframes in DwTPS, GP length configuration. On the basis of maintaining the existing special subframe design, a small amount of modification can be made to realize UpPTS with more symbol lengths, and it will not cause serious interference with the original TD-SCDMA.
[0067] Those of ordinary skill...
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