3 Initial Access And Mobility Nr Physical Layer Specifications In 5g

3 Initial Access And Mobility Nr Physical Layer Specifications In 5g It follows 3gpp series of standards similar to gsm, cdma and lte. 3gpp organization has been developing specifications for 5g nr since few years. first specifications have been published in dec. 2017 which suppors nsa (non standalone) where in 5g compliant ue relies on existing lte for initial access and mobility. Nr supports the following number of codewords for dl and ul per ue: for 1 to 4 layer transmission: for 5 to 8 layer transmission: codeword. codewords. ues are higher layer configured with 2 dmrs configurations for the front loaded case. in dl ul cp ofdm: configuration 1: supports up to 8 ports (su mimo).

3 Initial Access And Mobility Nr Physical Layer Specifications In 5g 3. initial access and mobility a user equipmentʼs initial access in nr is per formed according to a procedure that involves the steps of detecting a synchronization signal (ss), acquiring broadcast system information*14, and es tablishing connection with the network by a ran dom access*15 procedure. 3.1 ss pbch block. Etsi 3gpp ts 38.214 version 15.3.0 release 15 5 etsi ts 138 214 v15.3.0 (2018 10) foreword this technical specification has been produced by the 3rd generation partnership project (3gpp). The control plane transports control signaling information and is mainly responsible for connection establishment and maintenance, mobility, and security. the protocol stack is divided into layers. layer 1 is the physical layer. layer 2 encompassed the mac, rlc, pdcp, and sdap sublayers. layer 3 is the rrc layer. The layer 1, 2 and 3. the ts 38.200 series describes the layer 1 (physical layer) specifications. layers 2 and 3 are described in the 38.300 series. figure 1: radio interface protocol architecture around the physical layer figure 1 shows the nr radio interface protocol architecture around the physical layer (layer 1). the physical layer.