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A data transmission method and device
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A data transmission method and stream number technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve problems such as waste of resources, not very good, complicated data transmission process, etc., to avoid wireless links, increase Throughput, fully utilized effects
Active Publication Date: 2019-02-12
ZTE CORP
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Description
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However, in the context of multiple streams, the network side cannot update the configuration in time, resulting in a waste of resources.
[0025] for example, figure 1 The data traffic balance control of the same-frequency dual-cell multi-flow (SF-DC) across NodeBs. When the downlink of the wireless link between NodeB1 and UE is out of sync, resulting in the data of NodeB1 not being transmitted to the UE in time, the RNC will transfer the data of NodeB1 to the UE. Reschedule to NodeB2 to send
However, in order to maintain the uplink business, the signal may not be very good for NodeB1. NodeB1 will always receive the channel quality indication reported by UE, but NodeB1 will always estimate a certain capacity value to RNC, and then RNC will send data. For NodeB1, the data on the NodeB1 side cannot be transmitted for the second time, and the RNC side once again schedules the data that cannot be transmitted by NodeB1 to NodeB2 for transmission, and repeats itself, resulting in the complexity of the data transmission process and the waste of resources
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Embodiment 1
[0077] In this embodiment, the application layer of Node B reports the link status of the secondary assisting cell of the UE configured with DF-4C, and the initial configuration of the terminal is to configure the HSDPA multi-flow configuration of dual-band four-cell across NodeB1 and NodeB2, as shown in image 3 shown, including:
[0078] Step 301: the NodeB detects the uplink quality of the radio link of the secondary assisting cell of the UE configured with DF-4C.
[0079] The uplink quality is the channel quality of the uplink dedicated physical control channel DPCCH.
[0080] Step 302: The NodeB judges whether the radio link can be used as a multi-flow branch according to the uplink quality of the secondary assisting cell of the UE.
[0081] The NodeB can continue to use the existing uplink failure criteria, and judge whether the wireless link fails according to the uplink quality of the wireless link and the uplink failure criteria. If it fails, it determines that the w...
Embodiment 2
[0085] In this embodiment, the application layer of the Node B reports the out-of-synchronization of the wireless link of the assisting cell of the UE, and initially configures the UE to configure the HSDPA multi-flow configuration across NodeB1 and NodeB2 with single-frequency two cells, such as Figure 4 shown, including:
[0086] Step 401: Node B1 detects the downlink quality of the radio link of the assisting cell of the UE configured with SF-2C.
[0087] The downlink quality is indicated by the field channel quality indicator in the uplink channel high-speed physical control channel HS-DPCCH.
[0088] Step 402: Node B1 judges whether the radio link can be used as a multi-flow branch according to the downlink quality of the assisting cell of the UE, and reports to the application layer of Node B1.
[0089] The judging method is whether the downlink quality is lower than the quality threshold within a period of time, and if so, it is considered that the wireless link canno...
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Abstract
The invention discloses a data transmission method and device. The method comprises the steps that in the multi stream scene of high speed downlink packet access HSDPA, a node B detects the link quality of a wireless link of user equipment in an assist cell; according to the link quality of the wireless link, whether the wireless link can be used as a multi stream branch is judged; and if the wireless link cannot be used as the multi stream branch, the indication information of an unavailable multi stream resource is sent to high-level to indicate the high-level to carry out multi stream reconfiguration on the user equipment. According to the invention, the node B is used to report the indication information of the unavailable multi stream resource; the high-level knows the quality of each link; configuration resources are well regulated and controlled; multi stream gain can be well played; an out-of-step wireless link is prevented from participating in multi stream operation; system resources can be fully utilized; and the system throughput is increased.
Description
technical field [0001] The invention relates to the technical field of high-speed packet access, in particular to a data transmission method and device. Background technique [0002] With the continuous and rapid development of data services, HSPA (High-Speed Packet Access, High-Speed Packet Access) technology is becoming more and more common, and it is developing towards the direction of multi-antenna and multi-carrier. For example, the R7 version of 3GPP introduced MIMO (Multiple-Input Multiple-Out-put) technology, so that NodeB (Node B) can send two The transmission block can increase the data rate in a good space environment, and provide the advantage of wave speed to the UE in a low space environment; subsequently, the R8 version of 3GPP introduced DC-HSDPA (Dual Carrier-High Speed Downlink Packet Access) technology, R9 The dual-band DC-HSDPA is introduced in , so that the NodeB can simultaneously send HSDPA data to the UE from different frequency points with cro...
Claims
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Application Information
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