Inter-cell switch method in base station and data transmission device in switch process
A technology between cells and in base stations, which is applied in the field of communication, can solve problems such as data discarding and reduce real-time data, and achieve the effects of preventing excessive buffering, good data transmission, and data transmission control
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Embodiment 1
[0031] When a terminal is handed over from one cell to another, the downlink data is also handed over from the MAC-hs entity of one cell to the MAC-hs entity of another cell. From the signaling flow of the IUB port, the whole process can be divided into two parts, that is, the reconfiguration preparation process and the reconfiguration submission process.
[0032] Related processing of the reconfiguration preparation process, such as figure 1 As shown, the details are as follows:
[0033] Step 101, RNC sends NBAP synchronous reconfiguration preparation message to NodeB, informs NodeB that the HSDPA terminal in the source cell is ready to be handed over to the target cell from the source cell;
[0034] Step 102, the NBAP entity inside the NodeB configures the relevant information of the terminal to the MAC-hs entity of the target cell, and configures the RL ID and CELL ID of the terminal in the source cell to the MAC-hs entity of the target cell at the same time, while the sou...
Embodiment 2
[0044] Such as image 3 As shown in the figure, NB-NBAP is the NodeB internal NBAP (Node B Application Part, Node B Application Part) entity, which is mainly used for IUB port signaling interaction, and the configuration of RNC to NodeB is completed through this protocol entity; NB- source MAC-hs is the MAC-hs entity of the NodeB internal handover source cell; NB-target MAC-hs is the MAC-hs entity of the NodeB internal handover target cell.
[0045] The specific process is described as follows:
[0046] Step 301, RNC sends NBAP synchronous reconfiguration preparation message to NodeB, informs NodeB that the HSDPA terminal in the source cell is ready to switch to the target cell;
[0047] Step 302, the NBAP entity inside the NodeB configures the relevant information of the terminal to the MAC-hs entity of the target cell, and at the same time configures the RL_ID and CELL_ID of the terminal in the source cell to the MAC-hs entity of the target cell, and configures the MAC-hs e...
Embodiment 3
[0055] On the basis of the second embodiment, when data is switched in the NodeB, a timer can be used to avoid data switching failure.
[0056] When the reconfiguration is submitted, in order to prevent abnormalities in the data switching process, that is, if the target cell has not received the switching data from the source cell, in order to increase protection, in the target cell, the terminal will start a timer to wait for After the switching data is completed, if the switching data is not received after the timer expires, the switching data is identified as abnormal, and the RL starts new flow control and scheduling in the target cell and starts HSDPA service processing without continuing to wait.
[0057] It should be noted that the timer time depends on the approximate length of time required for data switching. Due to the difference in base station architecture, if the MAC-hs corresponding to multiple cell processing belongs to the same board, the process of switching ...
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