CN102595621A - Method and apparatus for parameter storage control at uplink receiving terminal - Google Patents

Abstract

The invention discloses a parameter storage control method and device of an uplink receiving end to simplify storage control. The method includes: at the uplink receiving end, if it is determined that the data packet received from the UE is a UE parameter packet, then verifying the data packet; if the verification result is correct, performing all UE parameters in the data packet Reorganize the package, and the parameter packages of each UE after repackaging are equal in length, and cache the UE parameter packages after repackaging; classify and store the cached UE parameter packages according to the channel to which they belong.

Description

A method and device for storing and controlling parameters at an uplink receiving end

technical field

The present invention relates to the field of communication technology, in particular to a method and device for storing and controlling parameters of an uplink receiving end.

Background technique

LTE is a new mobile communication technology. In the LTE system, when the uplink receiving end schedules the UE parameters forwarded by the interface, the upper layers need to send the UE parameters to the physical layer, and need to send them to the physical layer one subframe in advance. From the effective time of the UE parameters, at least two subframes need to be kept. The frame length time because of the system delay required to wait for one subframe. However, the UE parameters are sent once per subframe, and the UE parameters required in the UE data processing process must be saved.

Traditional data access generally adopts a ping-pong storage control method: during the process of storing the ping-ram, read the pong RAM; then switch, and during the process of storing the pong RAM, read the ping-pong RAM. If the data in a certain RAM is read twice, a larger RAM space is required to store subsequent incoming data. And the two RAMs cannot be read at the same time.

Contents of the invention

The invention provides a parameter storage control method and device of an uplink receiving end, which makes the storage control simpler.

An uplink receiver parameter storage control method provided by an embodiment of the present invention includes the following steps:

At the uplink receiving end, if it is determined that the data packet received from the UE is a user equipment UE parameter packet, the data packet is checked;

If the verification result is correct, then repackage the parameters of all UEs in the data packet, and the parameter packets of each UE after repackaging are equal in length, and cache the UE parameter packets after repackaging;

The cached UE parameter packages are classified and stored according to the channel to which they belong.

An uplink receiver parameter storage control device provided in an embodiment of the present invention includes:

a receiving processing unit, configured to verify that the data packet received from the UE is a UE parameter packet; if the verification result is correct, repackage all UE parameters in the data packet , and the parameter packets of each UE after repackaging are equal in length, and the UE parameter packets after repackaging are cached;

The classified storage control unit is configured to classify and store the cached UE parameters according to the channel to which they belong.

An uplink receiver parameter storage control device provided in an embodiment of the present invention includes: an antenna interface unit, a storage control unit, and a parameter extraction control unit, wherein,

The antenna interface unit is used to receive the data packet transmitted by the receiving antenna port;

A storage control unit, configured to determine whether the data packet is a UE parameter packet; if the data packet is a UE parameter packet, then verify the data packet; if the verification result is correct, verify the UE parameter packet in the data packet Perform repackaging, and the parameter packets of each UE after repackaging are equal in length, store the UE parameter packets after repackaging in the corresponding buffer area, and output the number of UEs;

The parameter extraction control unit is used to obtain the UE parameter package in the cache area of the storage control unit if it is detected that the number of UEs output by the storage control module is not 0 at the beginning position of each subframe, and the acquired UE Parameter packages are classified and stored according to the channel they belong to.

In the embodiment of the present invention, at the uplink receiving end, if it is determined that the data packet received from the UE is a UE parameter packet, the data packet is verified; if the verification result is correct, the UE parameter packet in the data packet is The packets are repackaged, and the parameter packets of each UE after repackaging are equal in length, and the UE parameter packets after repackaging are cached; the cached UE parameter packets are classified and stored according to the channel to which they belong. In this scheme, the received data is packaged and stored according to channels. Each data package has the same size, is aligned by word, and has simple access control.

Description of drawings

FIG. 1 is a schematic flowchart of a method for controlling storage of parameters at an uplink receiving end according to an embodiment of the present invention;

Fig. 2 is the structural representation of the device of the embodiment of the present invention;

FIG. 3 is a schematic diagram of a hardware device according to an embodiment of the present invention;

FIG. 4 is a structural diagram of a UE parameter packet;

FIG. 5 is an organizational structure diagram for extracting UE parameters by channel;

FIG. 6 is a schematic flowchart of a method for implementing storage control by the device shown in FIG. 3 .

Detailed ways

In order to simplify storage control, at the uplink receiving end, if it is determined that the data packet received from the UE is a UE parameter packet, the data packet is verified; if the verification result is correct, the UE parameter packet in the data packet is Wait for the packet length to reassemble the packet, and cache the reassembled UE parameter packet; classify and store the cached UE parameters according to the channel to which they belong. Here, repackaging with equal packet lengths refers to repackaging UE parameters, and the parameter packets of each UE after repackaging are of the same length.

Referring to Fig. 1, a method for controlling storage of parameters at an uplink receiving end in an embodiment of the present invention includes the following steps:

Step 101: at the uplink receiving end, if it is determined that the data packet received from the UE is a UE parameter packet, then verify the data packet.

Step 102: If the verification result is correct, repackage the UE parameter packets in the data packet with equal packet lengths, and cache the repackaged UE parameter packets.

Here, the UE data packets in at least three consecutive subframes can be stored in different buffer units, and the specific number can be set according to different systems, for example, in the LTE system, the number of consecutive subframes can be set to 3.

Step 103: Classify and store the cached UE parameter packages according to the channel they belong to.

In step 103, the UE parameter packets in each buffer unit may be extracted one by one according to the buffer order, and the channel type to which the extracted UE parameters belong is determined, and the extracted UE parameters are placed in the channel corresponding to the channel according to the determined channel in the storage unit.

Channels include PUSCH, PUCCH or pilot (Sounding). The parameters of each channel can be stored separately or jointly, and can be set according to the classification method. For example: the parameters of PUSCH, PUCCH or pilot (Sounding) are stored separately, and the parameters of PUSCH and Sounding, or the parameters of PUCCH and Sounding can also be stored jointly.

The method can further schedule the classified storage parameters.

Referring to FIG. 2 , the device according to the embodiment of the present invention includes: a receiving processing unit 21 and a classified storage control unit 22 . in,

The receiving processing unit 21 is configured to check the data packet if it is determined that the data packet received from the UE is a UE parameter packet; if the verification result is correct, repackage the UE parameter packet in the data packet , and the parameter packets of each UE after repackaging are equal in length, and the UE parameter packets after repackaging are cached;

The classified storage control unit 22 is configured to classify and store the cached UE parameters according to the channel to which they belong.

The receiving processing unit 21 is configured to store UE data packets in at least three consecutive subframes in different buffer units.

The classified storage control unit 22 is configured to extract the UE parameter packets in the cache unit one by one according to the cache order, and determine the type of channel to which the extracted UE parameters belong, and place the extracted UE parameters corresponding to the channel according to the determined channel. in the channel storage unit.

Channels include PUSCH, PUCCH or pilot (Sounding), and the classification storage control unit 22 can store the parameters of each channel separately, or jointly store them, such as: store the parameters of PUSCH, PUCCH or pilot (Sounding) separately , or jointly store the parameters of the PUSCH and Sounding, or jointly store the parameters of the PUCCH and Sounding.

It may further include: a scheduling unit, configured to schedule the classified stored parameters.

In this scheme, the received data is packaged and stored according to channels. Each data package has the same size, is aligned by word, and has simple access control. It is also possible to control data storage by using the channel flag bit in the data packet, so that the storage control is simple and reliable.

The technical solution of the present invention will be described in detail below with examples, which are implemented in the form of hardware. Specifically referring to FIG. 3 , the device according to the embodiment of the present invention includes: an antenna interface unit 30, a storage control unit 31, and a parameter extraction control unit 32, wherein,

The antenna interface unit 30 is used to receive the data packet transmitted by the receiving antenna port;

The storage control unit 31 is used to determine whether the data packet is a UE parameter packet; if the data packet is a UE parameter packet, then verify the data packet; if the verification result is correct, verify the UE parameter in the data packet Packets are repackaged, and the parameter packets of each UE after repackaging are equal in length, and the UE parameter packets after repackaging are stored in the corresponding buffer area, and the number of UEs is output;

The parameter extraction control unit 32 is used to obtain the UE parameter package in the cache area of the storage control unit if it is detected that the number of UEs output by the storage control module is not 0 at the starting position of each subframe, and the acquired The UE parameter package is classified and stored according to the channel to which it belongs.

The storage control unit 31 includes: a first control unit 311 and at least three cache units 312, wherein,

The first control unit 311 is configured to determine whether the data packet is a UE parameter packet; if the data packet is a UE parameter packet, then verify the data packet; if the verification result is correct, verify the UE parameter packet in the data packet The parameter packet is repackaged, and the parameter packets of each UE after repackaging are equal in length, and the UE parameter packet after grouping is stored in the buffer unit corresponding to the current subframe, and the enable signal and UE parameter packet are output to the cache unit;

Each buffer unit 312 is configured to store the UE parameter package in the corresponding subframe under the control of the enable signal, and output the determined number of UEs.

The parameter extraction control module 32 includes: a second control unit 321 and more than one channel storage unit 322, wherein,

The second control unit 321 is configured to obtain the UE parameter package in the cache area of the storage control unit if it is detected that the number of UEs output by the storage control module is not 0 at the starting position of each subframe, and the acquired The UE parameter package is classified and stored in the corresponding channel storage unit according to the channel to which it belongs,

Each channel storage unit 322 is configured to store UE parameters of a corresponding channel type under the control of the second control unit.

The parameter extraction control module 32 further includes:

The scheduling parameter storage unit 323 is configured to store the UE parameters obtained from the channel storage unit under the control of the second control unit, and provide the UE parameters under the control of each scheduling module.

In the embodiment of the present invention, the parameter package can be sent to this module through the AIF (Antenna Interface) interface, and the format of the UE parameter package is specifically shown in Figure 4. Here, it can be divided into PUSCH (Physical Uplink Shared Channel)+Sounding or PUCCH (Physical Uplink Control Channel)+Sounding according to different channel divisions, or a separate PUSCH channel, PUCCH channel, and Sounding channel. First, the 1st, 2nd, and 3rd words of the UE parameter packet (word 0 is the starting word, the packet header identifier) are cached as public parameters, and the 4th, 5th, and 6th words are cached for PUSCH; the 7th, 8th, and 9th words are cached for PUCCH , 10 words; for Sounding cache the 11th word data. Calculated in this way, the longest packet should be PUCCH+Sounding, which requires 3+4+1=8 words in total. For the convenience of extracting parameters, each UE parameter of each division is made into a package of 8 words in size. The highest word is used for caching of Sounding channel parameters, and other words are used for caching of other parameters. Unused words are filled with NULL. As shown in Figure 5.

Referring to Figure 6, the process of the above-mentioned device realizing storage control is as follows:

The specific process is as follows:

Step 601: The antenna interface unit is in an idle waiting state, and receives and caches the packet data after receiving the valid signal of the parameter packet sent by the upstream module, and proceeds to step 602.

Step 602: The storage control unit parses the received data packet according to the packet valid signal indication, and extracts the packet type information from the packet header, and the packet type information is located in the lower 8 bits of the first word of the UE parameter packet. If the received data packet is a UE parameter packet, go to step 603; otherwise, go to step 601 and wait for the arrival of the next packet of data.

Step 603: The storage control unit performs BIP32 verification on the received UE parameter package, the unit first caches the received data, performs verification calculation during the data buffering process, and gives the verification result when the data buffering ends . If the checking result is correct, go to step 604, otherwise go to step 605.

Step 604: The parameter extraction control unit classifies and stores the UE parameter packets by channel, and performs parameter scheduling control according to the processing time of each uplink module. The specific processing flow is as follows:

In the designed LTE system, UE parameters need to be sent one subframe in advance, and from the effective time of this parameter, the parameters need to be kept for at least 2 subframes, because it is necessary to wait for the system delay of one subframe.

As shown in FIG. 3 , in this embodiment, three pieces of SFRAM are used to cache UE parameter data of three different subframes, and a total of three SFRAM cache parameters of 800*32 bits are required. This device designs a subframe counter in the storage control module to perform 0, 1, 2 cycle counting. The subframe counter is used to control which SFRAM (Random Access Memory for sub frame parameter store) the UE parameters of each subframe are stored in. Since the UE parameters need to be delivered one subframe in advance, when the subframe counter value is 0, the data is stored in SFRAM1; when the subframe counter value is 1, the data is stored in SFRAM2; when the subframe counter value is 2 , the data is stored in SFRAM0. The UE parameter packets in each subframe are cached in the SFRAM in sequence. For each subframe, the device of this embodiment sets a UE counter. When a UE parameter package is sent, the counter is incremented by 1 until all UE parameter packages are delivered, and the UE counter value UE_NUM at this time is sent to the parameter extraction The control module is used for UE parameter scheduling control.

If it is detected that UE_NUM is not 0 at the beginning of each subframe, the parameter extraction control module starts, reads the UE parameters in the SFRAM, decomposes the UE parameters according to the channel, and stores them in PUSCH CRAM0 (Random Access Memory for control), PUCCH CRAM0 and Sounding CRAM0. PUSCH, PUCCH and Sounding require CRAM size of 600*32bit, 700*32bit, 400*32bit respectively. When the subframe counter value is 0, judge the UE_NUM corresponding to SFRAM0, if it is not 0, it is considered that there is UE scheduling in this subframe, the parameter extraction control module starts, reads the UE parameters in SFRAM0, and according to the UE parameter second The channel flags PUSCH_FLAG, PUCCH_FLAG, and SOUNGDING_FLAG on the words are used to determine the channel to which the UE belongs, and the parameters are cached in the CRAM of the corresponding channel. Similarly, when the subframe counter value is 1, SFRAM1 is processed; when it is 2, SFRAM2 is processed. The parameters in PUSCH CRAM0 are mainly used for parameter calculation, channel estimation and frequency offset estimation; the parameters in PUCCH CRAM0 are used for PUCCH parameter calculation and scheduling control; the parameters in Sounding CRAM0 are mainly used for parameter calculation and channel estimation. When the function module process is valid, the parameters used are taken out from the corresponding CRAM0, and the corresponding function processing is completed.

The system timing module gives a para_int interrupt information at the beginning of the second time slot of each subframe, and para_int is a pulse signal. When the parameter extraction control module detects this signal, all the parameters in PUSCH CRAM0 and Sounding CRAM0 are moved to PUSCH CRAM1 and Sounding CRAM1. PUSCH CRAM1 is controlled by the following scheduling processes: antenna combining IDFT scrambling scheduling process, dechannel interleaving demodulation and descrambling scheduling process and decoding block cascading scheduling process; Sounding CRAM1 is controlled by Sounding CINR calculation scheduling process. When the process is valid, read the UE parameters from the corresponding CRAM1 for subsequent calculation.

Step 605: After receiving the verification error indication, the storage control unit performs exception processing, and notifies the high-level UE of an error in receiving the parameter packet.

In the above, the physical layer protocol of the LTE uplink receiving end is implemented by the logic circuit, and the UE parameter package is delivered by the software to control the logic circuit to process UE data. However, the above-mentioned embodiment is only an example of the disclosure of the present invention. The solution of the present invention can be applied not only to the LTE system, but also to other systems. Other equivalent changes made according to the requirements of the present invention still fall within the scope of the present invention.

Compared with the prior art, the method and device of the present invention provide a parameter access control method and device for the LTE uplink receiving end. The structure of the present invention is clear, and the received data is grouped and stored according to the channel. Each data packet has a size of Same, word alignment, simple access control; use the channel flag in the data packet to control data storage, so that the storage control is simple and reliable; in the process of data extraction, the received data is first cached in RAM0, when the relevant process has finished fetching the data , an interrupt instruction signal is given, the data in RAM0 is moved to RAM1, and other processing processes take data from RAM1 to complete the corresponding processing. Moreover, when the processing process of the current UE reads data from RAM1 for processing, the processing process of the next UE can still read data from RAM0 for processing. Therefore, while reading data from RAM0 and RAM1 in parallel, the pipeline processing of each UE process is also realized. This processing method not only reduces the data writing waiting time, but also increases the effective data holding time, and each RAM only corresponds to a specific processing process, and the data reading control is simple. The solution of the invention can not only guarantee the delay requirement of the system, but also ensure the correct extraction of UE parameters in the data processing process.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (14)

1. A kind of uplink receiver parameter storage control method, it is characterized in that, the method comprises the following steps: At the uplink receiving end, if it is determined that the data packet received from the user equipment UE is a UE parameter packet, then verifying the data packet; If the verification result is correct, then repackage the parameters of all UEs in the data packet, and the parameter packets of each UE after repackaging are equal in length, and cache the UE parameter packets after repackaging; The cached UE parameter packages are classified and stored according to the channel to which they belong. 2. The method according to claim 1, characterized in that, caching the repackaged UE parameter package includes: The UE data packets in at least three consecutive subframes are stored in different buffer units. 3. The method according to claim 1, wherein the cached UE parameter packages are classified and stored by channel, comprising: Extract the UE parameter packets in the buffer unit one by one according to the buffer order, and determine the type of channel to which the extracted UE parameters belong, and place the extracted UE parameters in the channel storage unit corresponding to the channel according to the determined channel. 4. The method according to claim 1, wherein the channel is PUSCH, PUCCH or pilot frequency. 5. The method according to any one of claims 1 to 4, characterized in that the method further comprises: Schedule the parameters stored in categories. 6. An uplink receiver parameter storage control device, characterized in that it comprises: a receiving processing unit, configured to verify that the data packet received from the UE is a UE parameter packet; if the verification result is correct, repackage all UE parameters in the data packet , and the parameter packets of each UE after repackaging are equal in length, and the UE parameter packets after repackaging are cached; The classified storage control unit is configured to classify and store the cached UE parameters according to the channel to which they belong. 7. The device according to claim 6, wherein the receiving processing unit is configured to store UE data packets in at least three consecutive subframes in different buffer units. 8. The device according to claim 6, wherein the classified storage control unit is configured to extract the UE parameter packages in the buffer unit one by one according to the buffer order, and determine the channel type to which the extracted UE parameters belong, according to For the determined channel, the extracted UE parameters are placed in the channel storage unit corresponding to the channel. 9. The device according to claim 6, wherein the channel is PUSCH, PUCCH or pilot. 10. The device according to any one of claims 6-9, further comprising: The scheduling unit is configured to schedule the parameters stored in categories. 11. An uplink receiver parameter storage control device, characterized in that the device comprises: an antenna interface unit, a storage control unit, and a parameter extraction control unit, wherein, The antenna interface unit is used to receive the data packet transmitted by the receiving antenna port; A storage control unit, configured to determine whether the data packet is a UE parameter packet; if the data packet is a UE parameter packet, then verify the data packet; if the verification result is correct, verify the UE parameter packet in the data packet Perform repackaging, and the parameter packets of each UE after repackaging are equal in length, store the UE parameter packets after repackaging in the corresponding buffer area, and output the number of UEs; The parameter extraction control unit is used to obtain the UE parameter package in the cache area of the storage control unit if it is detected that the number of UEs output by the storage control module is not 0 at the beginning position of each subframe, and the acquired UE Parameter packages are classified and stored according to the channel they belong to. 12. The device according to claim 11, wherein the storage control unit comprises: a first control unit and at least three cache units, wherein, The first control unit is used to determine whether the data packet is a UE parameter packet; if the data packet is a UE parameter packet, then verify the data packet; if the verification result is correct, verify the UE parameter in the data packet Packets are repackaged, and the parameter packets of each UE after repackaging are equal in length, and the UE parameter packets after repackaging are stored in the corresponding buffer unit, and the enable signal and UE parameter packets are output to the buffer unit ; Each buffer unit is configured to store the UE parameter package in the corresponding subframe under the control of the enable signal, and output the determined number of UEs. 13. The device according to claim 11, wherein the parameter extraction control module comprises: a second control unit and more than one channel storage unit, wherein, The second control unit is used to obtain the UE parameter package in the cache area of the storage control unit if it is detected that the number of UEs output by the storage control module is not 0 at the beginning position of each subframe, and the obtained UE The parameter package is classified and stored in the corresponding channel storage unit according to the channel to which it belongs. Each channel storage unit is configured to store UE parameters of a corresponding channel type under the control of the second control unit. 14. The device according to claim 13, wherein the parameter extraction control module further comprises: The scheduling parameter storage unit is configured to store the UE parameter package obtained from the channel storage unit under the control of the second control unit, and provide UE parameters under the control of each scheduling module.

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