A method for determining delay parameters on a multi-hop network, comprising: in a data transmission process in a transmission path from a base station to a user equipment via at least two relay nodes, RNs: • receiving, by the base station, for each relay link other than a direct relay link being a direct relay link between the base station and a relay node in the transmission path, downlink delay parameters d 1 RNk and d 2 RNk of the relay link at two moments in time from a relay node RN k of the at least two relay nodes responsible for scheduling the relay link in the transmission path, with k being an integer greater than 1 and smaller or equal to a number of relay nodes in the transmission path; • acquiring, by the base station, downlink delay parameters d 1 eNB and d 2 eNB of the direct relay link by itself; • acquiring downlink delay parameters d 1 RN1 and d 2 RN1 of an access link of the transmission path at the two moments according to d 1 RNk, d 2 RNk of each relay link other than the direct relay link and d 1 eNB and d 2 eNB, wherein for each downlink delay parameter of all links of the transmission path the corresponding superscript in the downlink delay parameter indicates one of the two moments; and • calculating, by the base station, for the access link a mean delay parameter d RN1 according to the downlink delay parameters d 1 RN1 and d 2 RN1, and for each of the relay links other than the direct relay link a mean delay parameter d RNk according to the downlink delay parameters d 1 RNk and d 2 RNk, and for the direct relay link a mean delay parameter d eNB according to d 1 eNB and d 2 eNB within the time segment between the two moments; • setting for the access link a margin d RN1 + α 1, and for each of the relay links other than the direct relay link a corresponding margin d RNk + α k, and for the direct relay link a margin d eNB +α eNB, and determining α 1, α k α eNB according to a transmission change of a service in the corresponding link within the time segment and furthermore based on a topology structure of the transmission path, wherein furthermore the sum of all margins has to be equal to a delay parameter PDB that needs to be maintained by the transmission path; • setting a delay parameter D 1 for the access link to D 1 = d RN1 + α 1, and setting, for each relay link other than the direct relay link a corresponding delay parameter D k to D k = d RNk + α k, and setting a delay parameter for the direct relay link to D eNB = d eNB +α eNB. • receiving, by the base station, for each relay link other than a direct relay link being a direct relay link between the base station and a relay node in the transmission path, downlink delay parameters d 1 RNk and d 2 RNk of the relay link at two moments in time from a relay node RN k of the at least two relay nodes responsible for scheduling the relay link in the transmission path, with k being an integer greater than 1 and smaller or equal to a number of relay nodes in the transmission path; • acquiring, by the base station, downlink delay parameters d 1 eNB and d 2 eNB of the direct relay link by itself; • acquiring downlink delay parameters d 1 RN1 and d 2 RN1 of an access link of the transmission path at the two moments according to d 1 RNk, d 2 RNk of each relay link other than the direct relay link and d 1 eNB and d 2 eNB, wherein for each downlink delay parameter of all links of the transmission path the corresponding superscript in the downlink delay parameter indicates one of the two moments; and • calculating, by the base station, for the access link a mean delay parameter d RN1 according to the downlink delay parameters d 1 RN1 and d 2 RN1, and for each of the relay links other than the direct relay link a mean delay parameter d RNk according to the downlink delay parameters d 1 RNk and d 2 RNk, and for the direct relay link a mean delay parameter d eNB according to d 1 eNB and d 2 eNB within the time segment between the two moments; • setting for the access link a margin d RN1 + α 1, and for each of the relay links other than the direct relay link a corresponding margin d RNk + α k, and for the direct relay link a margin d eNB +α eNB, and determining α 1, α k α eNB according to a transmission change of a service in the corresponding link within the time segment and furthermore based on a topology structure of the transmission path, wherein furthermore the sum of all margins has to be equal to a delay parameter PDB that needs to be maintained by the transmission path; • setting a delay parameter D 1 for the access link to D 1 = d RN1 + α 1, and setting, for each relay link other than the direct relay link a corresponding delay parameter D k to D k = d RNk + α k, and setting a delay parameter for the direct relay link to D eNB = d eNB +α eNB.