Movik Networks

Vid Scale, Inc.

Krishnan Ramakrishnan

Surya Kumar Kovvali

Ramji Raghavan

Ronald Mark Parker

Charles W Boyle

Nizar K Purayil

Christopher Leary

A caching module is provided at the interface between a radio access network (RAN) and a core network (CN). If the requested content is available in the caching module as cached content, the caching module sends a header request upstream to an origin server to determine if the cached content is valid and authorized. If the cached content is invalid, it is evicted from the cached and may be replaced with a new, valid content. The CN can inspect the header response to perform data accounting and billing, to provide upstream content filtering, and to provide lawful interception capabilities. Related techniques are also provided.

Radio access network cache

A system and method to intercept traffic at standard interface points as defined by Cellular/Wireless networks (GSM/GPRS, 3G/UMTS/HSDPA/HSUPA, CDMA, WIMAX, LTE), emulate the respective protocols on either side of the interception point, extract user/application payloads within the intercepted packets, perform optimizations, and re-encapsulate with the same protocol, and deliver the content transparently is disclosed. The optimizations include but are not limited to Content Caching, prediction & pre-fetching of frequently used content, performance of content-aware transport optimizations (TCP, UDP, RTP etc.) for reducing back-haul bandwidth, and improvement of user experience. An additional embodiment of the current invention includes injecting opportunistic content (location based, profile based or advertisement content) based on the information derived while monitoring control plane protocols.

Content caching in the radio access network (RAN)

A packet scheduling method and apparatus with the knowledge of application behavior, anticipated usage/behavior based on the type of content, and underlying transport conditions during the time of delivery, is disclosed. This type of scheduling is applicable to a content server or a transit network device in wireless (e.g., 3G, WIMAX, LTE, WIFI) or wire-line networks. Methods for identifying or estimating rendering times of multi-media objects, segmenting a large media content, and automatically pausing or delaying delivery are disclosed. The scheduling reduces transit network bandwidth wastage, and facilitates optimal sharing of network resources such as in a wireless network.

Application, usage and radio link aware transport network scheduler

Content caching in the Radio Access Network (RAN)

Growing community of inventors

Hopkinton, MA, United States of America

Krishnan Ramakrishnan