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WiFi 6 Mediatek DR7915 2T2R Dual Band Concurrent DBDC miniPCIe module IEEE 802.11ax 2.4G / 5GHz, Wallys for 524wifi.com, NPD

WiFi 6 Mediatek DR7915 2T2R Dual Band Concurrent DBDC miniPCIe module IEEE 802.11ax 2.4G / 5GHz, Wallys for 524wifi.com, NPD

$56.00

In stock

SKU: DR7915

WiFi6 2T2R Dual Bands Dual Concurrent mPCIe Card IEEE802.11ax / ac / a / b / g / n 2.4G / 5GHz MT7915 + MT7975 - Wallys DR7915 WiFi module


DR7915 is a WiFi6 11ax 2T2R 1800Mbps enterprise wireless mini PCIe Module - new improved version available !

DR 7915 based on MT7915 + MT7975 Chipset is an enterprise wireless module integrated with 2x2 2.4G high power Radio module and 2x2 5G high power Radio module designed specifically to provide users with mobile access to high-bandwidth video streaming, voice, and data transmission for office and challenging RF environment infactories, warehousese stablishment.



DR7915 is 2 RF outputs for 2.4GHz, the other 2 RF outputs for 5GHz, and we combine 1x2.4GHz and 1x5GHz to be 1 antenna outputs and dual bands. So there are 2 antennas RF outputs with dual bands.


DR7915 is a WiFi6 Mini PCIe Module 2T2R based on Mediatek MT7915DAN which is a WiFi Mini PCIe single chip which supports 1800 Mbps PHY rate with  PCIe2.1. It fully complies with IEEE 802.11ax/ac and IEEE 802.11 ac/a/b/g/n standards, offering feature-rich wireless connectivity at high standards, and delivering reliable, cost-effective throughput from an extended distance.


Optimized RF architecture and base band algorithms provide superb performance and low power consumption. Intelligent MAC design deploys a high efficient offload engine and hardware data processing accelerators which completely offloads Wi-Fi task of the host processor. MT7915DAN is designed to support standard based features in the areas of security, quality of service and international regulations, giving end users the greatest performance any time and in any circumstance.


MT7915DAN is designed to support high data throughput over WiFi. The host interface PCIe are integrated to provide stable bandwidth between the host platform and MT7915DAN.




Description

Details

WiFi6 2T2R Dual Bands Dual Concurrent mPCIe Card IEEE802.11ax / ac / a / b / g / n 2.4G / 5GHz MT7915 + MT7975 - Wallys DR7915 WiFi module

MT7915+MT7975 Chipset

2.4GHz max 23dBm & 5GHz max 20dBm output power 

IEEE 802.11ac / ax compliant & backward compatible with 802.11ax/ac/a/b/g/n 

2×2 2.4G & 2×2 5G  MIMO Technology, up to 1.8Gbps Mini PCI Express edge connector 

SupporttheFrequency2412MHz~2482MHz

SupporttheFrequency5180MHz~5825MHz

RoHS compliance ensure a high level protection of human health and the environment from risks that can be posed by chemicals  

Supports Spatial Multiplexing,Cyclic-Delay Diversity (CDD), Low-Density Parity Check  (LDPC) Codes,Maximal Ratio Combining (MRC), Space Time Block Code (STBC)

Supports IEEE 802.11d, e, h, i, k, r, v time stamp, and w standards 

Supports Dynamic Frequency Selection (DFS) 

Cards are individually calibrated for QualityAssurance

Introduction

DR7915 is a WiFi6 Mini PCIe Module 2T2R based on Mediatek MT7915DAN which is a WiFi Mini PCIe single chip which supports 1800 Mbps PHY rate with PCIe2.1. It fully complies with IEEE 802.11ax/ac and IEEE 802.11 ac/a/b/g/n standards, offering feature-rich wireless connectivity at high standards, and delivering reliable, cost-effective throughput from an extended distance.

Optimized RF architecture and base band algorithms provide superb performance and low power consumption. Intelligent MAC design deploys a high efficient offload engine and hardware data processing accelerators which completely offloads Wi-Fi task of the host processor. MT7915DAN is designed to support standard based features in the areas of security, quality of service and international regulations, giving end users the greatest performance any time and in any circumstance.

MT7915DAN is designed to support high data throughput over WiFi. The host interface PCIe are integrated to provide stable bandwidth between the host platform and MT7915DAN.

Deep sleep mode:

Multiple power domains are implement on chip. In deep sleep mode, the PMU could be configured in a low power state to save the power consumption.

Two CPU systems: There are both 32-bits RISC MCU subsystem. The CPU has its local memory. There are several options of clock frequency to provide the optimal performance with the best power consumption. The 32-bit RISC MCU is used to do clocck control, power management, and host interface configuration. PDMA (packet DMA) engines are integrated to support on-the-fly data buffer management.

MT7915AN had the WiFi MAC and BBP subsystem and use with MT7975DN together, which provide the best-in-class radio and low power performance. And the Wi-Fi MAC and BBP subsystem and use with MT7975DN together, which provide the best-in-class radio and low power performance.

With the advent of 802.11ax/ac, multi-user MIMO (MU-MIMO) is defined. MT7915DAN supports MU-MIMO with different configurations.

MT7915DAN Block Diagram

MT7915DAN 11ax WiFi6 2T2R DBDC 1800Mbps block compact diagram

Features:

  • 2T2R in 2.4G+2T2R in 5G with support of up to 573+1201Mbps PHY rate
  • Supports 20, 40, 80 channels
  • HE MCS0-11 BW20/40/80MHz with Nss=1~2
  • Short Guard Interval
  • Space-time block code (STBC)
  • Low Density Partiy check (LDPC)
  • Support digital pre-distortion to enhance PA performance
  • Smoothing (channel estimation) extension to MIMO case
  • DFS radar detection
  • Embedded ARM Cortex R4 processor for full host CPU offload
  • Embedded 32-bit RISC microprocessor
  • Support STBC, LDPC, TX Beamformer and RX Beamformee
    Decoded BW20/40/80 up to 4×2 MU materix feedback
  • Greenfield, mixed mode, legacy modes support
  • Highly integrated RF with 40nm low power process
  • Noise mitigation:
    • Supports background scan function for fast channel switching
    • Supports spectrum analysis for non-Wi-Fi signals
  • Intelligent power saving
  • WFA WMM, WMM PS (QoS)
  • Integrate high efficiency internal 4G/5G PAs
  • Intelligent Calibration (iCal) reduces the production time
  • Integrate high efficiency internal 4G/5G PAs

Specification:

Symbol

Parameter

Chipset

MT7915+MT7975 

Host Interface

Mini PCI Express 2.1

Antenna Connector

2 x UF.L , the third (left) uf.l connector is for BT, not used now, for future use (BT is in the chipset)

Frequency Range

2.4GHz: 2.412GHz to 2.472GHz
5GHz: 5.180GHz to 5.825GHz

Operating Voltage

3.3V DC

Power Consumption

Power consumption maximum is 9W, average is 4 – 8W
Main board Power Supply design please provide 3.3V 3A, minimum 3.3V 2.5A.

Modulation Techniques

OFDM: BPSK, QPSK, DBPSK, DQPSK, 16-QAM, 64-QAM, 256-QAM

Environmental Temperature

Operating: -40°C to 70°C, Storage: -40°C to 90°C

Environmental Humidity, non-condensing

Operating: 5% to 95%, Storage: Max. 90%

ROHS Compliance

YES

Dimensions (W×H×D)

51mm × 30mm × 5.8mm

   RF Performance Table

Operating Mode

Data Rate

TX Power

Tolerance

1 Chain

2 Chains

2.4 GHz

802.11b

11Mbps

20dBm

23dBm

±2dB

2.4 GHz

802.11g

54Mbps

17dBm

20dBm

±2dB

2.4 GHz

802.11n HT20

MCS7

17dBm

20dBm

±2dB

2.4 GHz

802.11n HT40

MCS7

14dBm

17dBm

±2dB

Operating Mode

Data Rate

RX Sensitivity

Tolerance

2.4 GHz

802.11b

11Mbps

-96dBm

±2dB

2.4 GHz

802.11g

54Mbps

-93dBm

±2dB

2.4 GHz

802.11n HT20

MCS7

-89dBm

±2dB

2.4 GHz

802.11n HT40

MCS7

-86dBm

±2dB

Operating Mode

Data Rate

TXPower 

Tolerance

1 Chain 2 Chain

   5 GHz 

  802.11a

54Mbps 17dBm 20dBm ±2dB

   5 GHz 

  802.11n/ac HT20

MCS8 15dBm 20dBm ±2dB

  5 GHz 

  802.11n/ac HT40

MCS9 14dBm 17dBm ±2dB

  5 GHz 

  802.11n/ac HT80

MCS9 11.5dBm 14.5dBm ±2dB

  5 GHz 

  802.11n/ac HT20

MCS9 17dBm 20dBm ±2dB

  5 GHz 

  802.11n/ac HT40

MCS9 14dBm 17dBm ±2dB

  5 GHz 

  802.11n/ac HT80

MCS11 11dBm 14dBm ±2dB



























Operating Mode Data Rate RX Sensitivity Tolerance

5 GHz

802.11a

54Mbps -80dBm ±2dB

5 GHz

802.11n/ac HT20

MCS8 -71dBm ±2dB

5 GHz

802.11n/ac HT40

MCS9 -68dBm ±2dB

5 GHz

802.11n/ac HT80

 MCS9 -65dBm ±2dB

5 GHz

802.11n/ac HT20

 MCS9 -61dBm ±2dB

5 GHz

802.11n/ac HT40

 MCS9  -58dBm ±2dB

5 GHz

802.11n/ac HT80

 MCS11 -55dBm ±2dB

   MiniPCIe Slot Pin Assignment



TOP Side

Bottom Side

1

PCIE_WAKE_L

2

VCC_3V3

3

BT_PCM_DO

4

GND

5

BT_PCM_DI

6

BT_PCM_CLK

7

PCIE_CLKREQ_L

8

BT_PCM_SYNC

9

GND

10

PTA_TX

11

PCIE_REFCLK_N

12

BT_RTS

13

PCIE_REFCLK_P

14

BT_CTS

15

GND

16

PTA_RX

Mechanical key

17

NC

18

GND

19

NC

20

WIFI_EN

21

GND

22

PCIE_RST_L

23

PCIE_TX_N

24

VCC_3V3

25

PCIE_TX_P

26

GND

27

GND

28

BT_RX

29

GND

30

PTA_WLAN_ACT

31

PCIE_RX_P

32

PTA_ZB_PRI

33

PCIE_RX_N

34

GND

35

GND

36

LED_WPS

37

GND

38

LED_BT

39

VCC_3V3
     (RESERVED)

40

GND

41

VCC_3V3
     (RESERVED)

42

PTA_ZB_ACT

43

GND

44

LED_WIFI_2.4G

45

LED_WIFI5

46

NC

47

NC

48

NC

49

NC

50

GND

51

BT_EN

52

VCC_3V3

DR7915 can work on OpenWrt 21.02 version OS directly, no need to install the driver to support this MTK chipset. 

Please check if you are able to itegrate drivers in to your system. Please check with below link to download 11ax driver.

http://wifi5.eu/dls/524wifi/WiFi6-MT7915-modules/

Application

Let's have a look at the screenshots by using Wallys #DR4019 router board plus DR7915 DBDC Wlan module combo.

When the DR7915 is inserted into the DR40X9 board, there are 4 radios that can work at the same time, and it can be used as a soft router

As you can see on pictures attached, by using this combo,there will be 4 radios working at the same time,and you can configure each radio into AP or STA mode as you wish.

DR7915 can work on OpenWrt 21.02 version OS directly, no need to install the driver to support this MTK chipset.

We guess it would be a smart option as well to select #DR7915 for applications which require Multi-radios,soft router, Mesh,bonding etc...

Additional

Additional Information

Brand 524WIFI
firmware http://wifi5.eu/dls/524wifi

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Reviews

  1. OpenWRT Github for this chipset Review by Pavel
    Price
    Value
    Quality
    Delivery time

    https://github.com/openwrt/mt76/tree/master/mt7915 (Posted on 11/13/2022)

  2. can work well with latest OpenWRT Review by Pavel
    Quality
    Delivery time
    Price
    Value

    -This module can work well with latest OpeWRT with MT7915 driver included in.
    - One DR7915 module is detected as two independent MT7915E radios , one for 2,4GHZ 802.11bgnax and second for 5GHZ 802.11nacax
    -booth radios work together at same time , so you have two independent networks managed by one module. We tested 40+ end clients connected to each network, so 100 clients total connect at same time and each end device can access high speed internet at same time.
    - this is really great dual band WiFi 6 module !
    (Posted on 9/9/2022)

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