Dynamic configuration method and system for demodulation reference signal group hopping sequence hopping

Abstract

The present application relates to mobile communication network technical field, specifically to a kind of dynamic configuration method and system of demodulation reference signal group hop sequence hop, comprising: step S1: receiving the first system message and radio resource control signaling sent by base station;Step S2: based on the first system message and radio resource control signaling sends demodulation reference signal;Step S3: receiving the downlink control information fed back by base station, obtains group hop sequence hop indication bit, adjusts the transmission mode of demodulation reference signal according to group hop sequence hop indication bit.The beneficial effect is that: improvement is made for downlink control information, group hop sequence hop indication bit for simultaneously indicating whether group hop, sequence hop is added, whether group hop is opened, whether sequence hop is opened is simultaneously indicated based on the group hop sequence hop indication bit, avoid the problem that traditional one-step configuration method is easy to cause confusion, two-step configuration method power consumption is higher, improve transmission efficiency and the anti-interference of demodulation reference signal.

Description

Technical Field

[0001] This invention relates to the field of mobile communication network technology, and specifically to a dynamic configuration method and system for demodulation reference signal group hopping sequence hopping. Background Technology

[0002] 5G NR (New Radio) is a global 5G standard based on a new air interface design using OFDM (Orthogonal Frequency Division Multiplexing). In this system, to avoid interference between randomized demodulation reference signals (DMRS), the user equipment (UE) uses different demodulation reference signal sequences in different time slots and on different start symbols according to semi-static parameters carried by the Radio Resource Control (RRC). These sequences include three "hopping" modes: neither group hopping nor sequence hopping is enabled, and both group hopping and sequence hopping are enabled.

[0003] In existing technologies, the configuration method for the aforementioned hopping mode in NR systems typically involves the base station configuring whether group hopping is enabled in the PUSCH-ConfigCommon field of the first system message (SIB1). Subsequently, group hopping configuration information and sequence hopping configuration information are added in subsequent radio resource control signaling. Depending on the product, sequence hopping configuration information may or may not be configured; generally, when sequence hopping configuration information is configured, it automatically overrides the group hopping configuration information, and the user equipment uses sequence hopping for transmission.

[0004] Based on the above rules, existing configuration methods mainly include two-step configuration and one-step configuration. The two-step configuration involves the base station performing two configurations in two configuration or reconfiguration messages: first, configuring group hop configuration information to be disabled (disabling group hops); second, configuring sequence hop configuration information to be enabled (enabling sequence hops). The one-step configuration involves the base station disabling both group hops and enabling sequence hops once, and simultaneously configuring both group hop configuration information to be disabled and sequence hop information to be enabled in the configuration or reconfiguration message. Regarding the one-step configuration method, different terminal manufacturers and equipment manufacturers have different interpretations. Some manufacturers believe that disabling group hops does not require enabling sequence hops, while others interpret it as successfully disabling group hops and enabling sequence hops.

[0005] However, in actual implementation, the inventors discovered that when using the one-step configuration method, due to differences in the local configuration methods for group hopping and sequence hopping among different manufacturers, it is easy for the user equipment side to directly disable group hopping and not enable sequence hopping. This results in the user equipment and the base station being unable to re-enable group hopping during subsequent interactions, thus affecting the normal transmission of the demodulation reference signal. The two-step configuration method, on the other hand, easily leads to additional transmission overhead. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, a dynamic configuration method for demodulation reference signal group hopping sequence hopping is provided; furthermore, a dynamic configuration system applying this dynamic configuration method is also provided.

[0007] The specific technical solution is as follows: A dynamic configuration method for demodulation reference signal group hopping sequence hopping includes: Step S1: Receive the first system message and radio resource control signaling sent by the base station; Step S2: Send a demodulation reference signal based on the first system message and the radio resource control signaling; Step S3: Receive downlink control information fed back by the base station, obtain the group hop sequence hop indicator bit from the downlink control information, and adjust the transmission mode of the demodulation reference signal according to the group hop sequence hop indicator bit.

[0008] On the other hand, step S1 includes: Step S11: Receive the first system message sent by the base station; Step S12: Receive the radio resource control signaling according to the base station configuration information in the first system message.

[0009] On the other hand, step S2 includes: Step S21: Parse the change coding enable information from the radio resource control signaling and parse the group hop configuration information from the first system message; Step S22: According to the group hopping configuration information, the demodulation reference signal is transmitted in a group hopping manner. During the transmission process, the demodulation reference signal is processed using the change coding enable information.

[0010] On the other hand, step S3 includes: Step S31: Receive the downlink control information and parse the group hop sequence hop indicator bit from the downlink control information; Step S32: Compare the group hop sequence hop indicator bit with the pre-configured mode information to obtain the actual group hop sequence hop transmission mode; Step S33: In the subsequent uplink signal transmission process, the demodulation reference signal is transmitted based on the group hop sequence hop transmission mode.

[0011] On the other hand, before performing step S1, the base station adds the group hop sequence hop indicator bit to the downlink control information; The group hop sequence hop indicator bit is used to indicate that: the physical uplink shared channel does not enable group hop or sequence hop to transmit the demodulation reference signal, or the physical uplink shared channel enables group hop to transmit the demodulation reference signal, or the physical uplink shared channel enables sequence hop to transmit the demodulation reference signal.

[0012] A dynamic configuration system for demodulation reference signal group hopping sequence hopping, used to implement the above-described dynamic configuration method, includes: The receiving module receives the first system message and radio resource control signaling sent by the base station; A transmitting module, connected to the receiving module, transmits a demodulation reference signal based on the first system message and the radio resource control signaling; The mode adjustment module receives downlink control information fed back by the base station, obtains the group hop sequence hop indicator bit from the downlink control information, and adjusts the transmission mode of the demodulation reference signal according to the group hop sequence hop indicator bit.

[0013] On the other hand, the receiving module includes: A message receiving module, wherein the message receiving module receives the first system message sent by the base station; A signaling receiving module is connected to the message receiving module, and the signaling receiving module receives the radio resource control signaling according to the base station configuration information in the first system message.

[0014] On the other hand, the sending module includes: The information parsing module parses change coding enable information from the radio resource control signaling and parses group hop configuration information from the first system message; A group-hopping transmission module, which transmits the demodulation reference signal in a group-hopping manner according to the group-hopping configuration information; Furthermore, during the transmission process, the group-hopping transmission module processes the demodulation reference signal using the change coding enable information. On the other hand, the mode adjustment module includes: An indicator bit extraction module receives the downlink control information and parses the group hop sequence hop indicator bit from the downlink control information; The mode determination module compares the group hop sequence hop indicator bit with pre-configured mode information to obtain the actual group hop sequence hop transmission mode. A demodulation reference signal transmission module transmits the demodulation reference signal based on the group hop sequence hop transmission mode during subsequent uplink signal transmission.

[0015] The above technical solution has the following advantages or beneficial effects: To address the issue of confusion during mode switching caused by the one-step configuration method in existing technologies, this solution improves the downlink control information by adding a group hop / sequence hop indicator bit to simultaneously indicate whether group hops and sequence hops are configured. Based on this group hop / sequence hop indicator bit, the solution simultaneously indicates whether group hops and sequence hops are enabled, avoiding the confusion caused by the traditional one-step configuration method and the high power consumption of the two-step configuration method. This improves transmission efficiency and the anti-interference capability of the demodulation reference signal. Attached Figure Description

[0016] Embodiments of the invention will be described more fully with reference to the accompanying drawings. However, the drawings are for illustration and explanation only and do not constitute a limitation on the scope of the invention.

[0017] Figure 1 This is an overall schematic diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of sub-step S1 in an embodiment of the present invention; Figure 3 This is a schematic diagram of sub-step S2 in an embodiment of the present invention; Figure 4 This is a schematic diagram of sub-step S3 in an embodiment of the present invention; Figure 5 This is a schematic diagram of an embodiment of the present invention; Figure 6 This is a schematic diagram of the receiving module submodule in an embodiment of the present invention; Figure 7 This is a schematic diagram of the sending module submodule in an embodiment of the present invention; Figure 8 This is a schematic diagram of the mode adjustment module submodule in an embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0021] This invention includes: A dynamic configuration method for demodulation reference signal group skipping sequence skipping, such as Figure 1 As shown, it includes: Step S1: Receive the first system message and radio resource control signaling sent by the base station; Step S2: Send a demodulation reference signal based on the first system message and radio resource control signaling; Step S3: Receive downlink control information fed back by the base station, obtain the group hop sequence hop indicator bit from the downlink control information, and adjust the transmission mode of the demodulation reference signal according to the group hop sequence hop indicator bit.

[0022] Specifically, addressing the issue of mode switching confusion arising from the one-step configuration method in existing technologies, this solution improves the downlink control information by adding a group hop / sequence hop indicator bit. This bit simultaneously indicates whether group hop and sequence hop are enabled. Based on this configuration, when user information accesses the base station, it receives the first system message and radio resource control signaling according to the normal procedure and sends a demodulation reference signal according to the relevant group hop configuration to request downlink control information (DCI). Upon receiving the downlink control information, the group hop / sequence hop indicator bit is extracted from it to determine the actual group hop / sequence hop configuration and make adjustments. Based on this configuration, a corresponding demodulation reference signal is generated during subsequent uplink signal generation. Therefore, based on this process, this solution only requires sending downlink control information once to achieve the indication process, saving overhead compared to the two-step configuration method. Furthermore, since the group hop / sequence hop indicator bit can simultaneously indicate both group hop and sequence hop, it avoids confusion compared to the one-step configuration method, ensuring that the demodulation reference signal can correctly enable group hop or sequence hop mode, thus improving anti-interference capability.

[0023] In implementation, the aforementioned dynamic configuration method is primarily implemented as a software embodiment in the corresponding user equipment. This user equipment can enable or disable group hops or sequence hops according to the improved dynamic configuration method. Correspondingly, the base station has pre-configured a program to improve the downlink control signal by adding a group hop / sequence hop indicator bit. This indicator bit can be 2 bits, depending on actual needs, and is used to simultaneously indicate the configuration information of both group hops and sequence hops. Its actual content may vary depending on the product. For example, in one embodiment, before executing step S1, the base station adds a group hop / sequence hop indicator bit to the downlink control information. The group hop / sequence hop indicator bit indicates that: the physical uplink shared channel does not enable group hops or sequence hops to transmit demodulation reference signals, or the physical uplink shared channel enables group hops to transmit demodulation reference signals, or the physical uplink shared channel enables sequence hops to transmit demodulation reference signals. A 2-bit indicator bit is used, where each bit represents whether group hops or sequence hops are enabled or disabled; a bit set to 1 indicates enabled, and a bit set to 0 indicates disabled; there is no 2-bit indicator bit with all bits set to 1.

[0024] In one embodiment, such as Figure 2 As shown, step S1 includes: Step S11: Receive the first system message sent by the base station; Step S12: Receive radio resource control signaling according to the base station configuration information in the first system message.

[0025] Specifically, in order to implement the downlink control signaling request process, in this embodiment, the user equipment obtains the corresponding first system message according to the normal process. The first system message contains group hopping configuration information, which is used to indicate whether group hopping can be enabled. At the same time, in order to meet the uplink signal transmission requirements, the user equipment also obtains the corresponding radio resource control signaling according to the base station configuration information in the first system message. The radio resource control signaling contains transformation precoding enable information, which is used to indicate whether the uplink channel uses transformation precoding to transmit uplink signals.

[0026] In one embodiment, such as Figure 3 As shown, step S2 includes: Step S21: Parse the change coding enable information from the radio resource control signaling, and parse the group hop configuration information from the first system message; Step S22: According to the group hopping configuration information, the demodulation reference signal is transmitted in the group hopping mode. During the transmission process, the demodulation reference signal is processed using change coding enable information.

[0027] Specifically, after receiving the first system message and the radio resource control command, in order to acquire the downlink control signal, this embodiment pre-parses the radio resource control command and the first system message to determine whether the current base station allows uplink signal transmission using change coding and group hopping. Typically, the base station has pre-configured group hopping and change coding, so the demodulation reference signal is parsed and transmitted based on the group hopping method and change coding, thereby obtaining the downlink control information fed back by the base station in subsequent steps.

[0028] In one embodiment, such as Figure 4 As shown, step S3 includes: Step S31: Receive downlink control information and parse the group hop sequence hop indicator bit from the downlink control information; Step S32: Compare the group hop sequence hop indicator bit with the pre-configured mode information to obtain the actual group hop sequence hop transmission mode; Step S33: In the subsequent uplink signal transmission process, the demodulation reference signal is transmitted based on the group hop sequence hop transmission mode.

[0029] Specifically, after obtaining the downlink control information fed back by the base station, the user terminal can further parse the group hop sequence hop indicator bit by reading the downlink control information, based on the information available in the prior art. Subsequently, according to the group hop sequence hop indicator bit, the user terminal can determine the actual group hop sequence hop transmission mode based on pre-configured mode information, that is, the mode corresponding to the data contained in the indicator bit. Based on the group hop sequence hop transmission mode, the user terminal performs corresponding processing in the subsequent uplink signal transmission process to ensure that the demodulation reference signal has the corresponding group hop transmission or sequence hop transmission.

[0030] A dynamic configuration system for demodulation reference signal group hopping sequence hopping, used to implement the above-described dynamic configuration method, such as... Figure 5 As shown, it includes: Receiver module 1 receives the first system message and radio resource control signaling sent by the base station; Transmitting module 2 is connected to receiving module 1. Transmitting module 2 transmits demodulation reference signals based on the first system message and radio resource control signaling. The mode adjustment module 3 receives downlink control information fed back by the base station, obtains the group hop sequence hop indicator bit from the downlink control information, and adjusts the transmission mode of the demodulation reference signal according to the group hop sequence hop indicator bit.

[0031] Specifically, addressing the issue of confusion during mode switching caused by the one-step configuration method in existing technologies, in this embodiment, when a user equipment accesses a base station, the receiving module 1 receives the first system message and radio resource control signaling according to the normal procedure, and the transmitting module 2 sends a demodulation reference signal according to the relevant group hop configuration to request downlink control information. After the mode adjustment module 3 receives the downlink control information, it extracts the group hop sequence hop indicator bit from the downlink control information, thereby determining the actual group hop sequence hop configuration used, and generating the corresponding demodulation reference signal based on this configuration during subsequent uplink signal generation.

[0032] In one embodiment, such as Figure 6 As shown, the receiving module 1 includes: Message receiving module 11 receives the first system message sent by the base station; The signaling receiving module 12 is connected to the message receiving module 11. The signaling receiving module 12 receives radio resource control signaling according to the base station configuration information in the first system message.

[0033] Specifically, in order to implement the downlink control signaling request process, in this embodiment, the message receiving module 11 obtains the corresponding first system message according to the normal process. The first system message contains group hopping configuration information, which is used to indicate whether group hopping can be enabled. At the same time, in order to meet the uplink signal transmission requirements, the signaling receiving module 12 also obtains the corresponding radio resource control signaling according to the base station configuration information in the first system message. The radio resource control signaling contains change coding enable information, which is used to indicate whether the uplink channel uses change coding to transmit uplink signals.

[0034] In one embodiment, such as Figure 7 As shown, the sending module 2 includes: The information parsing module 21 parses change coding enable information from the radio resource control signaling and parses group hop configuration information from the first system message; Group jump transmission module 22 transmits demodulation reference signals in a group jump mode according to the group jump configuration information; Furthermore, during the transmission process, the group jump transmission module 22 uses change coding enable information to process the demodulation reference signal.

[0035] Specifically, after receiving the first system message and the radio resource control command, in order to acquire the downlink control signal, in this embodiment, the information parsing module 21 pre-parses the radio resource control command and the first system message to determine whether the current base station allows uplink signal transmission using change coding and group hopping. Typically, the base station has pre-configured group hopping enable and change coding enable. The group hopping transmission module 22 then parses and transmits the demodulation reference signal based on the group hopping method and change coding, thereby acquiring the downlink control information fed back by the base station in subsequent steps.

[0036] In one embodiment, such as Figure 8 As shown, mode adjustment module 3 includes: Indicator bit extraction module 31 receives downlink control information and parses the group hop sequence hop indicator bit from the downlink control information; The mode determination module 32 compares the group hop sequence hop indicator bit with the pre-configured mode information to obtain the actual group hop sequence hop transmission mode. The demodulation reference signal transmission module 33 transmits the demodulation reference signal based on the group hop sequence hop transmission mode during the subsequent uplink signal transmission process.

[0037] Specifically, after obtaining the downlink control information fed back by the base station, the group hop sequence hop indicator bit is further parsed by the indicator bit extraction module 31 based on the information available in the prior art by reading the downlink control information. Subsequently, according to the group hop sequence hop indicator bit, the mode determination module 32 can determine the actual group hop sequence hop transmission mode based on the pre-configured mode information, that is, the mode corresponding to the data contained in the indicator bit. Based on the group hop sequence hop transmission mode, the demodulation reference signal transmission module 33 performs corresponding processing in the subsequent uplink signal transmission process to enable the demodulation reference signal to have the corresponding group hop transmission or sequence hop transmission.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic configuration method for demodulation reference signal group skipping sequence skipping, characterized in that, include: Step S1: Receive the first system message and radio resource control signaling sent by the base station; Step S2: Send a demodulation reference signal based on the first system message and the radio resource control signaling; Step S3: Receive downlink control information fed back by the base station, obtain the group hop sequence hop indicator bit from the downlink control information, and adjust the transmission mode of the demodulation reference signal according to the group hop sequence hop indicator bit; Before performing step S1, the base station adds a group hop sequence hop indicator bit to the downlink control information; The group hop sequence hop indicator bit is used to indicate that: the physical uplink shared channel does not enable group hop or sequence hop to transmit the demodulation reference signal, or the physical uplink shared channel enables group hop to transmit the demodulation reference signal, or the physical uplink shared channel enables sequence hop to transmit the demodulation reference signal; Step S1 includes: Step S11: Receive the first system message sent by the base station; Step S12: Receive the radio resource control signaling according to the base station configuration information in the first system message; In step S12, the radio resource control signaling includes change coding enable information, which is used to indicate whether the uplink channel uses change coding to transmit uplink signals.

2. The dynamic configuration method according to claim 1, characterized in that, Step S2 includes: Step S21: Parse the change coding enable information from the radio resource control signaling and parse the group hop configuration information from the first system message; Step S22: According to the group hopping configuration information, the demodulation reference signal is transmitted in a group hopping manner. During the transmission process, the demodulation reference signal is processed using the change coding enable information.

3. The dynamic configuration method according to claim 1, characterized in that, Step S3 includes: Step S31: Receive the downlink control information and parse the group hop sequence hop indicator bit from the downlink control information; Step S32: Compare the group hop sequence hop indicator bit with the pre-configured mode information to obtain the actual group hop sequence hop transmission mode; Step S33: In the subsequent uplink signal transmission process, the demodulation reference signal is transmitted based on the group hop sequence hop transmission mode.

4. The dynamic configuration method according to claim 1, characterized in that, Before performing step S1, the base station adds the group hop sequence hop indicator bit to the downlink control information; The group hop sequence hop indicator bit is used to indicate that: the physical uplink shared channel does not enable group hop or sequence hop to transmit the demodulation reference signal, or the physical uplink shared channel enables group hop to transmit the demodulation reference signal, or the physical uplink shared channel enables sequence hop to transmit the demodulation reference signal.

5. A dynamic configuration system for demodulation reference signal group jump sequence hopping, characterized in that, For implementing the dynamic configuration method as described in any one of claims 1-4, comprising: The receiving module receives the first system message and radio resource control signaling sent by the base station; A transmitting module, connected to the receiving module, transmits a demodulation reference signal based on the first system message and the radio resource control signaling; The mode adjustment module receives downlink control information fed back by the base station, obtains the group hop sequence hop indicator bit from the downlink control information, and adjusts the transmission mode of the demodulation reference signal according to the group hop sequence hop indicator bit.

6. The dynamic configuration system according to claim 5, characterized in that, The receiving module includes: A message receiving module, wherein the message receiving module receives the first system message sent by the base station; A signaling receiving module is connected to the message receiving module, and the signaling receiving module receives the radio resource control signaling according to the base station configuration information in the first system message.

7. The dynamic configuration system according to claim 5, characterized in that, The sending module includes: The information parsing module parses change coding enable information from the radio resource control signaling and parses group hop configuration information from the first system message; A group-hopping transmission module, which transmits the demodulation reference signal in a group-hopping manner according to the group-hopping configuration information; Furthermore, during the transmission process, the group-hopping transmission module processes the demodulation reference signal using the change coding enable information.

8. The dynamic configuration system according to claim 5, characterized in that, The mode adjustment module includes: An indicator bit extraction module receives the downlink control information and parses the group hop sequence hop indicator bit from the downlink control information; The mode determination module compares the group hop sequence hop indicator bit with pre-configured mode information to obtain the actual group hop sequence hop transmission mode. A demodulation reference signal transmission module transmits the demodulation reference signal based on the group hop sequence hop transmission mode during subsequent uplink signal transmission.

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