| 摘要 |
Methods of, and network nodes for, optimizing downlink network traffic which is delivered to a client (101) via a Radio Access Network (RAN) (102) are provided. A first method comprises, at a first network node (103), receiving from the client a request for content (211, 212), including an indication (213) pertaining to a first traffic optimization functionality of the first network node into the request, and forwarding the request (214) to a second network node (104) located upstream. The method further comprises, at the second network node, receiving the request (214), determining whether the request comprises the indication (215), and forwarding the request (216) to a server. The method further comprises, at the second network node, determining whether the downlink traffic relates to a request comprising the indication (222), optimizing the downlink traffic (222), and forwarding the downlink traffic (223) to the first network node. In optimizing the downlink traffic (222), traffic optimization functionality which corresponds to the first traffic optimization functionality is omitted. The method further comprises, at the first network node, receiving the downlink traffic (223), optimizing the downlink traffic (224), and forwarding the downlink traffic (225, 226) to the client. |
