US 9,807,800 B2 · Data transmission method

Abstract

This invention proposes efficient data transmission methods in the mobile cellular network. A specific resource pool is divided into several resource groups to indicate the size level of the data available for transmission. The base station allocates a proper UL grant to the terminal. Based on the allocated UL grant, the terminal compares the granted Transport Block (TB) size with the size of data available for transmission. If the UL grant is large enough, the terminal transmits the data available for transmission in the allocated UL resource, otherwise, re-attempts the random access procedure. In another example, the terminal transmits a BSR message and as much of the data as is available for transmission. The base station may grant additional UL resources if there is remaining data to be transmitted. A timer is used for the terminal to decide whether waiting for the additional UL grant from the base station.

Claims25

Dependent claims

A data transmission method, comprising:

receiving broadcast information from a base station by a terminal, wherein the broadcast information comprises at least one specific resource pool and at least one non-specific resource pool for a random access preamble;
utilizing the at least one specific resource pool to perform a random access procedure of data transmission by the terminal when the terminal meets at least one condition;
receiving random access response from the base station, wherein the random access response comprises allocated uplink (UL) resource;
and
transmitting a media access control (MAC) package data unit (PDU) in message 3 (MSG 3) in the allocated UL resource, wherein the MAC PDU comprises data available for transmission from an application layer to the base station.

2 more elements

A data transmission method, comprising:

receiving broadcast information from a base station by a terminal, wherein the broadcast information comprises at least one specific resource pool and at least one non-specific resource pool, and the at least one specific resource pool comprises at least one resource group;
transmitting a preamble sequence by a terminal to the base station over a time-frequency region, wherein at least one of the preamble sequence and the time-frequency region is selected from the at least one resource group in the specific resource pool;
receiving random access response from the base station, wherein the random access response comprises allocated uplink (UL) resource;
and
transmitting a media access control (MAC) package data unit (PDU) in message 3 (MSG 3) in the allocated UL resource, wherein the MAC PDU comprises data available for transmission from an application layer to the base station.

2 more elements

Dependencies are inferred from the claim text.

Data transmission method

Life of this patent

Data transmission method

Life of this patent

Abstract

Claims25