Verizon completes first 5G radio specs

Verizon said it has completed its first 5G radio specifications, as it progresses a “common and extendable platform for Verizon’s 28/39 GHz fixed wireless access trials and deployments”.

The carrier said it is currently in pre-commercial trials for the “fibre via wireless” application of “5G” – whereby it seeks to use “5G” technologies to provide very high throughput fixed wireless access to buildings and businesses.

Verizon added that it will have commercial deployment of this use case in 2017.

“The completion of the 5G radio specification is a key milestone toward the development of a complete 5G specification,” said Adam Koeppe, Vice President Network Technology Planning, who is leading the 5G trial efforts. “The level of collaboration that we are seeing exceeds what we saw during 4G. This agile way of developing the specification and working with the ecosystem will enable us to get to market rapidly.”

Verizon said it has validated a range of 5G technology enablers, such as wide bandwidth operation of several hundred MHz in size, multiple antenna array processing, and carrier aggregation capabilities that are substantially different from 4G.

It has tested propagation and penetration of millimeter wave systems in the field, studying line-of-sight and non-line-of-sight performance, and propagation modeling using barriers such as structures and foliage, all based on real-world fixed wireless applications.

The work has been completed within its Verizon 5G Technical Forum (V5GTF), an alliance it formed in late 2015 with Ciscos, Ericsson, Intel, LG, Nokia, Qualcomm and Samsung.

The 5G technical specifications outline a 5G radio interface composed of Layers 1, 2 and 3, and defines the interfaces between the User Equipment (UE) and the network.

The operator has produced four documents that are available for download, all related to Layer 1, the physical layer:

  1. An overall description of 5th Generation Radio Access
  2. Specs on multiplexing and channel coding
  3. Specs on Physical Channels and Modulation
  4. Physical Layer Procedures

The documents describe an air interface based on OFDM with a cyclic prefix in the downlink and uplink. Each radio frame is made up of 50 subframes, with a length of 10 ms (0.2ms per subframe). Up to 8 MIMO streams are supported in the downlink, and up to 2 UE streams in the uplink. Aggregation of multiple cells is also supported, wich up to 8 serving  cells.

A series describing Layers 2 and 3 (Medium Access Control, Radio Link Control, Packet Data Convergence Protocol, and Radio Resource Control) will be released subsequently, Verizon said.