Method for processing receiving channel signal in device-to-device communication link
A technology for receiving channels and channel signals, applied in the field of device-to-device wireless communication, which can solve the problems of time-consuming and expensive
Active Publication Date: 2020-01-31
HONG KONG APPLIED SCI & TECH RES INST
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Problems solved by technology
Such blind processing is computationally very expensive and time-consuming, so it is undesirable at least in a V2X environment
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[0041] The preferred embodiments are described below as examples only, and are not limited to combinations of features necessary for realizing the present invention.
[0042] Reference in this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Furthermore, various features are described which may be present in some embodiments but not in others. Similarly, various requirements are described which may be necessary for some embodiments but not for others.
[0043] It should be understood that elements shown in the figures may be implemented in various forms of hardware, software o...
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A method for decoding the physical edge link shared channel (PSSCH) is described, including the reduction of the physical edge link control channel (PSCH) resource grid search space, timing offset (TO) estimation, and reference symbol identification. The reduction of the resource grid search space may include identifying resource blocks (RBs) having a signal power below a first threshold, so thatthe RBs may be excluded from further processing. The search space reduction may additionally or alternatively include identifying resource block pairs (RB pairs), where the difference in signal powerbetween the RBs that make up each RB pair is above a second threshold, and excluding any or All such RB pairs. The TO compensation may include cyclically correlating the received DMRs and their corresponding local DMRs to obtain the energy distribution or power distribution. From the energy / power distribution, a subset L of the highest stored power value and its corresponding cyclic shift (ncs)value may be selected, where the power value is equal to or greater than a third threshold. The selected subset L can be used for the decoding process of the received channel signals.
Description
technical field [0001] The present invention relates generally to device-to-device wireless communications, and in particular, but not exclusively, to the use of physical sidelink control channel (PSCCH) resource grid search space reduction, estimation and compensation of timing offsets of received channel signals, and Demodulation Reference Signal (DMRS) symbols are identified to decode signals of channels such as Physical Sidelink Shared Channel (PSSCH). The present invention is especially suitable for the side link in the vehicle wireless communication technology (V2X) communication system. Background technique [0002] Sidelinks are a feature of the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE), which was first introduced in 3GPP Release 12 and aims to enable D2D communication within conventional cellular-based LTE radio access networks. Sidelinks have been fleshed out in 3GPP Release 14 with various features. D2D is suitable for public safety and...
Claims
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Login to View More IPC IPC(8): H04L1/00H04L25/02H04W4/40
CPCH04L1/0036H04L1/0038H04L25/0224H04W4/40
Inventor 侯云毛宇毅招溢利刘向宇骆亚铭关文伟曾江州
Owner HONG KONG APPLIED SCI & TECH RES INST