| 摘要 |
The invention discloses a content fragment distribution method realizing on-demand casting through broadcasting. Resources that are possibly requested by a user are split into different fragments, and the fragmented resources are broadcasted continuously, periodically and circularly in different channels. The method comprises the following steps: S1, receiving restriction parameters input by the user; S2, generating m sets; and S3, selecting one subscheme per set from the generated m sets in sequence to form a new combined scheme to constitute a scheme that all the m fragments are broadcasted simultaneously and circularly in c channels, wherein the restriction parameters include content fragment number m, circular broadcasting cycle n and channel number L simultaneously received by the user; each set contains a possible subscheme that n is taken as the cycle and one fragment is broadcasted circularly in a channel; and m, n, L and c are natural numbers. Compared with the prior art, the fragment allocation scheme described in the method ensures that less server broadcasting bandwidth can be used to accomplish an on-demand casting service. |
