| 摘要 |
Embodiments of the present invention relate to the field of communications, and provide a communications method and apparatus, which can solve a problem in the prior art that, in order to save power, when a mobility management entity (MME) delays delivering a paging message or a UE uses a long discontinuous reception (DRX) period, an exception may occur in a serving gateway (SGW). The method includes: acquiring, by an MME, information of a UE (S101); determining, by the MME according to the information, whether the UE satisfies a first preset condition (S102); if the UE satisfies the first preset condition, generating, by the MME, a first indication, where the first indication is used for instructing an SGW to retain first data or discard first data, and the first data is downlink data of the UE (S103); and sending, by the MME, the first indication to the SGW. |
| 主权项 |
1. A communications method, comprising:
acquiring, by a mobility management entity (MME), information of a user equipment (UE); determining, by the MME according to the information of the UE, whether the UE satisfies a first preset condition; when the UE satisfies the first preset condition, generating, by the MME, a first indication, wherein the first indication is used for instructing a serving gateway (SGW) to retain first data or discard first data, and the first data is downlink data of the UE; and sending, by the MME, the first indication to the SGW; wherein:
the first indication comprises a first paging delaying instruction, and is used for instructing the SGW to determine a first time according to the first paging delaying instruction and retain the first data within the first time, or is used for instructing the SGW to discard the first data according to the first paging delaying instruction; orthe first indication comprises a first suggested waiting time, and is used for instructing the SGW to retain the first data within the first suggested waiting time; orthe first indication comprises a first paging delaying instruction and a first suggested waiting time, and is used for instructing the SGW to retain the first data within the first suggested waiting time after the SGW determines, according to the first paging delaying instruction, that the MME needs to delay paging the UE; orthe first indication comprises a first paging delaying instruction and an evolved packet system (EPS) bearer identifier, and is used for instructing the SGW to determine a first time according to the first paging delaying instruction and retain, within the first time, the first data corresponding to the EPS bearer identifier, or is used for instructing the SGW to discard, according to the first paging delaying instruction, the first data corresponding to the EPS bearer identifier; orthe first indication comprises a first suggested waiting time and a EPS bearer identifier, and is used for instructing the SGW to retain, within the first suggested waiting time, the first data corresponding to the EPS bearer identifier; orthe first indication comprises a first paging delaying instruction, a first suggested waiting time, and a EPS bearer identifier, and is used for instructing the SGW to retain, within the first suggested waiting time, the first data corresponding to the EPS bearer identifier after the SGW determines, according to the first paging delaying instruction, that the MME needs to delay paging the UE. |
