A short range communications method, performed by a system comprising a benefited user equipment, UE, a supporting UE, and a base station, BS, wherein the benefited UE is adapted to send or receive data, and wherein the supporting UE is adapted to assist the benefited UE in communication by carrying and transmitting data, wherein the method comprises: establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer, wherein the first radio bearer is a benefited radio bearer of the benefited UE; the short range bearer is a bearer set up on a device to device communication link between the benefited UE and the supporting UE to assist the supporting UE in communication with the benefited UE; a mapping is performed between the short range bearer and a second radio bearer on the supporting UE side; the second radio bearer is a radio bearer set up for the supporting UE to assist the first radio bearer, and a mapping is performed between the first radio bearer and the second radio bearer on the base station side; and performing, by the benefited UE, data receiving and sending by using the mapping between the first radio bearer and the short range bearer, wherein before the establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer, the method further comprises: receiving, by the benefited UE, a first reconfiguration message sent by the base station, and setting up the first radio bearer according to the first reconfiguration message; and the establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer comprises: establishing, by the benefited UE, the mapping between the short range bearer and the first radio bearer according to the first reconfiguration message, wherein after the receiving, by the benefited UE, a first reconfiguration message sent by the base station, further comprising: setting up, by the benefited UE, the short range bearer according to first short range bearer configuration information in the first reconfiguration message. wherein the benefited UE is adapted to send or receive data, and wherein the supporting UE is adapted to assist the benefited UE in communication by carrying and transmitting data, wherein the method comprises: establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer, wherein the first radio bearer is a benefited radio bearer of the benefited UE; the short range bearer is a bearer set up on a device to device communication link between the benefited UE and the supporting UE to assist the supporting UE in communication with the benefited UE; a mapping is performed between the short range bearer and a second radio bearer on the supporting UE side; the second radio bearer is a radio bearer set up for the supporting UE to assist the first radio bearer, and a mapping is performed between the first radio bearer and the second radio bearer on the base station side; and performing, by the benefited UE, data receiving and sending by using the mapping between the first radio bearer and the short range bearer, wherein before the establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer, the method further comprises: receiving, by the benefited UE, a first reconfiguration message sent by the base station, and setting up the first radio bearer according to the first reconfiguration message; and the establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer comprises: establishing, by the benefited UE, the mapping between the short range bearer and the first radio bearer according to the first reconfiguration message, the first radio bearer is a benefited radio bearer of the benefited UE; the short range bearer is a bearer set up on a device to device communication link between the benefited UE and the supporting UE to assist the supporting UE in communication with the benefited UE; a mapping is performed between the short range bearer and a second radio bearer on the supporting UE side; the second radio bearer is a radio bearer set up for the supporting UE to assist the first radio bearer, and a mapping is performed between the first radio bearer and the second radio bearer on the base station side; and performing, by the benefited UE, data receiving and sending by using the mapping between the first radio bearer and the short range bearer, wherein before the establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer, the method further comprises: receiving, by the benefited UE, a first reconfiguration message sent by the base station, and setting up the first radio bearer according to the first reconfiguration message; and the establishing, by the benefited UE, a mapping between a short range bearer and a first radio bearer comprises: establishing, by the benefited UE, the mapping between the short range bearer and the first radio bearer according to the first reconfiguration message, wherein after the receiving, by the benefited UE, a first reconfiguration message sent by the base station, further comprising: setting up, by the benefited UE, the short range bearer according to first short range bearer configuration information in the first reconfiguration message.