Method and arrangement in a communication network system
A technology of statistical data and random access, applied in the field of communication network, can solve the problem of not dealing with random access, etc., to achieve the effect of improving SNR (signal-to-noise ratio) and performance, improving system performance, and avoiding excessive interference
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[0220] at P f - In said first embodiment of the estimator, when requested by the BS, the MS reports information about its random access attempts when accessing the network. For all RA attempts from the first preamble up to granted network access, the MS records the information needed to verify the validity of the correlation peak observed at the BS in time and in the RA slot Generated by the preamble sent by the MS. This includes, but is not limited to: (i) the BS the MS is trying to access, (ii) the RA slot ID (number) or time interval, (iii) the preamble (root sequence and bits), and (iv) the timing advance received from the BS in the final and successful attempt. At this point we assume that the MS has not changed its position significantly in the direction towards the BS, i.e. we assume that the round-trip time (and thus the timing advance) has not changed significantly between RA attempts (this may not be valid in high-speed cells Assumptions). The BS compares correla...
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